[INFO] cloning repository https://github.com/topazus/head-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/topazus/head-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftopazus%2Fhead-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftopazus%2Fhead-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72a5e54655e37028b384063e116cc2097eee5ed3
[INFO] testing topazus/head-rs against beta-2026-01-20 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftopazus%2Fhead-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/topazus/head-rs
[INFO] finished tweaking git repo https://github.com/topazus/head-rs
[INFO] tweaked toml for git repo https://github.com/topazus/head-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/topazus/head-rs on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/topazus/head-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] testing topazus/head-rs against beta-2026-01-20 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftopazus%2Fhead-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/topazus/head-rs
[INFO] finished tweaking git repo https://github.com/topazus/head-rs
[INFO] tweaked toml for git repo https://github.com/topazus/head-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/topazus/head-rs on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/topazus/head-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded predicates v2.1.1
[INFO] [stderr]   Downloaded normalize-line-endings v0.3.0
[INFO] [stderr]   Downloaded textwrap v0.15.0
[INFO] [stderr]   Downloaded clap_lex v0.1.1
[INFO] [stderr]   Downloaded difflib v0.4.0
[INFO] [stderr]   Downloaded predicates-core v1.0.3
[INFO] [stderr]   Downloaded predicates-tree v1.0.5
[INFO] [stderr]   Downloaded assert_cmd v2.0.4
[INFO] [stderr]   Downloaded float-cmp v0.9.0
[INFO] [stderr]   Downloaded termtree v0.2.4
[INFO] [stderr]   Downloaded clap v3.1.12
[INFO] [stderr]   Downloaded libc v0.2.124
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aac476f6139816525d9ff074fba44d96923434e244abaf08ba0df951a164aa1b
[INFO] running `Command { std: "docker" "start" "-a" "aac476f6139816525d9ff074fba44d96923434e244abaf08ba0df951a164aa1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aac476f6139816525d9ff074fba44d96923434e244abaf08ba0df951a164aa1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aac476f6139816525d9ff074fba44d96923434e244abaf08ba0df951a164aa1b", kill_on_drop: false }`
[INFO] [stdout] aac476f6139816525d9ff074fba44d96923434e244abaf08ba0df951a164aa1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b231b0dadda4a44dbfcb6ec147386de253d014a9ff7f94ea3f1fe9abd704df6
[INFO] running `Command { std: "docker" "start" "-a" "4b231b0dadda4a44dbfcb6ec147386de253d014a9ff7f94ea3f1fe9abd704df6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling textwrap v0.15.0
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling clap_lex v0.1.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v3.1.12
[INFO] [stderr]    Compiling headr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `files_str`
[INFO] [stdout]   --> src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let files_str = matches.values_of("files").unwrap().collect::<Vec<&str>>();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `files_string`
[INFO] [stdout]   --> src/lib.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let files_string = matches
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:216:9
[INFO] [stdout]     |
[INFO] [stdout] 216 |     let mut file = std::fs::File::open("Cargo.toml").unwrap();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes_read`
[INFO] [stdout]    --> src/lib.rs:226:9
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let bytes_read = file.read_to_string(&mut contents).unwrap();
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:231:9
[INFO] [stdout]     |
[INFO] [stdout] 231 |     let mut file = std::fs::File::open("Cargo.toml").unwrap();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |     let mut buf = String::new();
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/lib.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |     let mut buf = String::new();
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_args` is never used
[INFO] [stdout]   --> src/lib.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn parse_args() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_lines_file` is never used
[INFO] [stdout]    --> src/lib.rs:173:4
[INFO] [stdout]     |
[INFO] [stdout] 173 | fn read_lines_file(file_name: &str) -> Vec<String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_lines_file2` is never used
[INFO] [stdout]    --> src/lib.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn read_lines_file2(file_name: &str) -> Result<Vec<String>, Box<dyn Error>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_bytes_from_file` is never used
[INFO] [stdout]    --> src/lib.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn read_bytes_from_file(bytes: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_bytes_from_file2` is never used
[INFO] [stdout]    --> src/lib.rs:223:4
[INFO] [stdout]     |
[INFO] [stdout] 223 | fn read_bytes_from_file2(bytes: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_bytes_from_file3` is never used
[INFO] [stdout]    --> src/lib.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn read_bytes_from_file3(bytes: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_positive_int2` is never used
[INFO] [stdout]    --> src/lib.rs:264:4
[INFO] [stdout]     |
[INFO] [stdout] 264 | fn parse_positive_int2(val: &str) -> Result<isize, &str> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_positive_int3` is never used
[INFO] [stdout]    --> src/lib.rs:270:4
[INFO] [stdout]     |
[INFO] [stdout] 270 | fn parse_positive_int3(val: &str) -> Result<isize, &str> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `Command { std: "docker" "inspect" "4b231b0dadda4a44dbfcb6ec147386de253d014a9ff7f94ea3f1fe9abd704df6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b231b0dadda4a44dbfcb6ec147386de253d014a9ff7f94ea3f1fe9abd704df6", kill_on_drop: false }`
[INFO] [stdout] 4b231b0dadda4a44dbfcb6ec147386de253d014a9ff7f94ea3f1fe9abd704df6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a082226885760e9872456de509adb6d53245e9377a2c74a8c38d3160e6dc8fa
[INFO] running `Command { std: "docker" "start" "-a" "8a082226885760e9872456de509adb6d53245e9377a2c74a8c38d3160e6dc8fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling predicates-core v1.0.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling termtree v0.2.4
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling predicates-tree v1.0.5
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling clap v3.1.12
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling predicates v2.1.1
[INFO] [stderr]    Compiling headr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `files_str`
[INFO] [stdout]   --> src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let files_str = matches.values_of("files").unwrap().collect::<Vec<&str>>();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `files_string`
[INFO] [stdout]   --> src/lib.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let files_string = matches
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:216:9
[INFO] [stdout]     |
[INFO] [stdout] 216 |     let mut file = std::fs::File::open("Cargo.toml").unwrap();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes_read`
[INFO] [stdout]    --> src/lib.rs:226:9
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let bytes_read = file.read_to_string(&mut contents).unwrap();
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:231:9
[INFO] [stdout]     |
[INFO] [stdout] 231 |     let mut file = std::fs::File::open("Cargo.toml").unwrap();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |     let mut buf = String::new();
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/lib.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |     let mut buf = String::new();
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_args` is never used
[INFO] [stdout]   --> src/lib.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn parse_args() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_lines_file` is never used
[INFO] [stdout]    --> src/lib.rs:173:4
[INFO] [stdout]     |
[INFO] [stdout] 173 | fn read_lines_file(file_name: &str) -> Vec<String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_lines_file2` is never used
[INFO] [stdout]    --> src/lib.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn read_lines_file2(file_name: &str) -> Result<Vec<String>, Box<dyn Error>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_bytes_from_file` is never used
[INFO] [stdout]    --> src/lib.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn read_bytes_from_file(bytes: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_bytes_from_file2` is never used
[INFO] [stdout]    --> src/lib.rs:223:4
[INFO] [stdout]     |
[INFO] [stdout] 223 | fn read_bytes_from_file2(bytes: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_bytes_from_file3` is never used
[INFO] [stdout]    --> src/lib.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn read_bytes_from_file3(bytes: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_positive_int2` is never used
[INFO] [stdout]    --> src/lib.rs:264:4
[INFO] [stdout]     |
[INFO] [stdout] 264 | fn parse_positive_int2(val: &str) -> Result<isize, &str> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_positive_int3` is never used
[INFO] [stdout]    --> src/lib.rs:270:4
[INFO] [stdout]     |
[INFO] [stdout] 270 | fn parse_positive_int3(val: &str) -> Result<isize, &str> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling assert_cmd v2.0.4
[INFO] [stdout] warning: unused variable: `files_str`
[INFO] [stdout]   --> src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let files_str = matches.values_of("files").unwrap().collect::<Vec<&str>>();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `files_string`
[INFO] [stdout]   --> src/lib.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let files_string = matches
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:216:9
[INFO] [stdout]     |
[INFO] [stdout] 216 |     let mut file = std::fs::File::open("Cargo.toml").unwrap();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes_read`
[INFO] [stdout]    --> src/lib.rs:226:9
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let bytes_read = file.read_to_string(&mut contents).unwrap();
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:231:9
[INFO] [stdout]     |
[INFO] [stdout] 231 |     let mut file = std::fs::File::open("Cargo.toml").unwrap();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |     let mut buf = String::new();
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/lib.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |     let mut buf = String::new();
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_args` is never used
[INFO] [stdout]   --> src/lib.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn parse_args() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_bytes_from_file` is never used
[INFO] [stdout]    --> src/lib.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn read_bytes_from_file(bytes: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_bytes_from_file2` is never used
[INFO] [stdout]    --> src/lib.rs:223:4
[INFO] [stdout]     |
[INFO] [stdout] 223 | fn read_bytes_from_file2(bytes: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_bytes_from_file3` is never used
[INFO] [stdout]    --> src/lib.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn read_bytes_from_file3(bytes: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 7.71s
[INFO] running `Command { std: "docker" "inspect" "8a082226885760e9872456de509adb6d53245e9377a2c74a8c38d3160e6dc8fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a082226885760e9872456de509adb6d53245e9377a2c74a8c38d3160e6dc8fa", kill_on_drop: false }`
[INFO] [stdout] 8a082226885760e9872456de509adb6d53245e9377a2c74a8c38d3160e6dc8fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 65e451e2ffdf47bff54310a36c1f66dc5b1b20e29f99880bc1857f35809ad7c2
[INFO] running `Command { std: "docker" "start" "-a" "65e451e2ffdf47bff54310a36c1f66dc5b1b20e29f99880bc1857f35809ad7c2", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `files_str`
[INFO] [stderr]   --> src/lib.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let files_str = matches.values_of("files").unwrap().collect::<Vec<&str>>();
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `files_string`
[INFO] [stderr]   --> src/lib.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let files_string = matches
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_string`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:216:9
[INFO] [stderr]     |
[INFO] [stderr] 216 |     let mut file = std::fs::File::open("Cargo.toml").unwrap();
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes_read`
[INFO] [stderr]    --> src/lib.rs:226:9
[INFO] [stderr]     |
[INFO] [stderr] 226 |     let bytes_read = file.read_to_string(&mut contents).unwrap();
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:231:9
[INFO] [stderr]     |
[INFO] [stderr] 231 |     let mut file = std::fs::File::open("Cargo.toml").unwrap();
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:232:9
[INFO] [stderr]     |
[INFO] [stderr] 232 |     let mut buf = String::new();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/lib.rs:232:9
[INFO] [stderr]     |
[INFO] [stderr] 232 |     let mut buf = String::new();
[INFO] [stderr]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: function `parse_args` is never used
[INFO] [stderr]   --> src/lib.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn parse_args() {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_lines_file` is never used
[INFO] [stderr]    --> src/lib.rs:173:4
[INFO] [stderr]     |
[INFO] [stderr] 173 | fn read_lines_file(file_name: &str) -> Vec<String> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_lines_file2` is never used
[INFO] [stderr]    --> src/lib.rs:183:4
[INFO] [stderr]     |
[INFO] [stderr] 183 | fn read_lines_file2(file_name: &str) -> Result<Vec<String>, Box<dyn Error>> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_bytes_from_file` is never used
[INFO] [stderr]    --> src/lib.rs:215:4
[INFO] [stderr]     |
[INFO] [stderr] 215 | fn read_bytes_from_file(bytes: usize) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_bytes_from_file2` is never used
[INFO] [stderr]    --> src/lib.rs:223:4
[INFO] [stderr]     |
[INFO] [stderr] 223 | fn read_bytes_from_file2(bytes: usize) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_bytes_from_file3` is never used
[INFO] [stderr]    --> src/lib.rs:230:4
[INFO] [stderr]     |
[INFO] [stderr] 230 | fn read_bytes_from_file3(bytes: usize) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `parse_positive_int2` is never used
[INFO] [stderr]    --> src/lib.rs:264:4
[INFO] [stderr]     |
[INFO] [stderr] 264 | fn parse_positive_int2(val: &str) -> Result<isize, &str> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `parse_positive_int3` is never used
[INFO] [stderr]    --> src/lib.rs:270:4
[INFO] [stderr]     |
[INFO] [stderr] 270 | fn parse_positive_int3(val: &str) -> Result<isize, &str> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `headr` (lib) generated 15 warnings (run `cargo fix --lib -p headr` to apply 7 suggestions)
[INFO] [stderr] warning: `headr` (lib test) generated 11 warnings (11 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/headr-3531c68e707880af)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_parse_positive_int ... ok
[INFO] [stdout] test test_parse_positive_int2 ... ok
[INFO] [stdout] test test_read_lines_file ... ok
[INFO] [stdout] test test_parse_positive_int3 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/headr-afeb36bc9b739ae0)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/cli.rs (/opt/rustwide/target/debug/deps/cli-c69a9f51aaa2b0f9)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test_random_string ... ok
[INFO] [stdout] test test_bad_bytes ... ok
[INFO] [stdout] test test_bad_lines ... ok
[INFO] [stdout] test long_flag ... ok
[INFO] [stdout] test test_bytes ... FAILED
[INFO] [stdout] test read_lines ... FAILED
[INFO] [stdout] test read_lines_from_files ... FAILED
[INFO] [stdout] test test_empty ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_bytes stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test_bytes' (37) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code-101
[INFO] [stdout] stderr=```"\nthread \'main\' (49) panicked at src/lib.rs:95:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `bytes`\nstack backtrace:\n   0:     0x608d96b94242 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x608d96b94242 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x608d96b94242 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9\n   3:     0x608d96b94242 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26\n   4:     0x608d96ba3cba - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76\n   5:     0x608d96ba3cba - core::fmt::write::h952c506e2dbe9cff\n   6:     0x608d96b6ff16 - std::io::default_write_fmt::h72db0b4dbd5dcfa2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11\n   7:     0x608d96b6ff16 - std::io::Write::write_fmt::hb496f2b9b027aa16\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13\n   8:     0x608d96b77c96 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9\n   9:     0x608d96b77c96 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27\n  10:     0x608d96b77af6 - std::panicking::default_hook::h0134d220cc034c02\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:319:9\n  11:     0x608d96b77edb - std::panicking::panic_with_hook::h8119b6db1fef734f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:825:13\n  12:     0x608d96b77d58 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13\n  13:     0x608d96b76089 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18\n  14:     0x608d96b646fd - __rustc[e4c6931bd8050421]::rust_begin_unwind\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5\n  15:     0x608d96ba891c - core::panicking::panic_fmt::hb1614a3ff6840071\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14\n  16:     0x608d96a3da8e - clap::parse::matches::arg_matches::assert_utf8_validation::hd7aa09d715ff4135\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x608d96a3d86b - clap::parse::matches::arg_matches::ArgMatches::value_of::h716e467639967e02\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x608d96a41506 - headr::get_args::h64466543972541ba\n                               at /opt/rustwide/workdir/src/lib.rs:95:10\n  19:     0x608d96a3bec2 - headr::main::hb756bc80b1918edb\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x608d96a3bd8b - core::ops::function::FnOnce::call_once::h9310c86c5dafe1f1\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5\n  21:     0x608d96a3bd4e - std::sys::backtrace::__rust_begin_short_backtrace::he8cf27792119c3ba\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18\n  22:     0x608d96a3bd21 - std::rt::lang_start::{{closure}}::h4a3e37baecc27c1f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:206:18\n  23:     0x608d96b71896 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd1cc8864ab2ce613\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:287:21\n  24:     0x608d96b71896 - std::panicking::catch_unwind::do_call::h761b8a8d54647a61\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  25:     0x608d96b71896 - std::panicking::catch_unwind::hb78a0edcad597ebc\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  26:     0x608d96b71896 - std::panic::catch_unwind::hf40177800cac754b\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  27:     0x608d96b71896 - std::rt::lang_start_internal::{{closure}}::ha1b3ca2f45db2265\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:175:24\n  28:     0x608d96b71896 - std::panicking::catch_unwind::do_call::hca68f60e509d57f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  29:     0x608d96b71896 - std::panicking::catch_unwind::h75a65b4419799b0f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  30:     0x608d96b71896 - std::panic::catch_unwind::h56fc4c7ccdf741b6\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  31:     0x608d96b71896 - std::rt::lang_start_internal::h267ec6e0203f10ab\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:171:5\n  32:     0x608d96a3bd07 - std::rt::lang_start::h68c6ce891313f560\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:205:5\n  33:     0x608d96a3bfde - main\n  34:     0x7ae1dc3981ca - <unknown>\n  35:     0x7ae1dc39828b - __libc_start_main\n  36:     0x608d96a3bc05 - _start\n  37:                0x0 - <unknown>\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/headr" "-c=3" "tests/inputs/unicodes.txt"`
[INFO] [stdout] code=101
[INFO] [stdout] stdout=""
[INFO] [stdout] stderr="\nthread \'main\' (49) panicked at src/lib.rs:95:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `bytes`\nstack backtrace:\n   0:     0x608d96b94242 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x608d96b94242 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x608d96b94242 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9\n   3:     0x608d96b94242 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26\n   4:     0x608d96ba3cba - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76\n   5:     0x608d96ba3cba - core::fmt::write::h952c506e2dbe9cff\n   6:     0x608d96b6ff16 - std::io::default_write_fmt::h72db0b4dbd5dcfa2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11\n   7:     0x608d96b6ff16 - std::io::Write::write_fmt::hb496f2b9b027aa16\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13\n   8:     0x608d96b77c96 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9\n   9:     0x608d96b77c96 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27\n  10:     0x608d96b77af6 - std::panicking::default_hook::h0134d220cc034c02\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:319:9\n  11:     0x608d96b77edb - std::panicking::panic_with_hook::h8119b6db1fef734f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:825:13\n  12:     0x608d96b77d58 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13\n  13:     0x608d96b76089 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18\n  14:     0x608d96b646fd - __rustc[e4c6931bd8050421]::rust_begin_unwind\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5\n  15:     0x608d96ba891c - core::panicking::panic_fmt::hb1614a3ff6840071\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14\n  16:     0x608d96a3da8e - clap::parse::matches::arg_matches::assert_utf8_validation::hd7aa09d715ff4135\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x608d96a3d86b - clap::parse::matches::arg_matches::ArgMatches::value_of::h716e467639967e02\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x608d96a41506 - headr::get_args::h64466543972541ba\n                               at /opt/rustwide/workdir/src/lib.rs:95:10\n  19:     0x608d96a3bec2 - headr::main::hb756bc80b1918edb\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x608d96a3bd8b - core::ops::function::FnOnce::call_once::h9310c86c5dafe1f1\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5\n  21:     0x608d96a3bd4e - std::sys::backtrace::__rust_begin_short_backtrace::he8cf27792119c3ba\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18\n  22:     0x608d96a3bd21 - std::rt::lang_start::{{closure}}::h4a3e37baecc27c1f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:206:18\n  23:     0x608d96b71896 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd1cc8864ab2ce613\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:287:21\n  24:     0x608d96b71896 - std::panicking::catch_unwind::do_call::h761b8a8d54647a61\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  25:     0x608d96b71896 - std::panicking::catch_unwind::hb78a0edcad597ebc\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  26:     0x608d96b71896 - std::panic::catch_unwind::hf40177800cac754b\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  27:     0x608d96b71896 - std::rt::lang_start_internal::{{closure}}::ha1b3ca2f45db2265\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:175:24\n  28:     0x608d96b71896 - std::panicking::catch_unwind::do_call::hca68f60e509d57f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  29:     0x608d96b71896 - std::panicking::catch_unwind::h75a65b4419799b0f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  30:     0x608d96b71896 - std::panic::catch_unwind::h56fc4c7ccdf741b6\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  31:     0x608d96b71896 - std::rt::lang_start_internal::h267ec6e0203f10ab\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:171:5\n  32:     0x608d96a3bd07 - std::rt::lang_start::h68c6ce891313f560\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:205:5\n  33:     0x608d96a3bfde - main\n  34:     0x7ae1dc3981ca - <unknown>\n  35:     0x7ae1dc39828b - __libc_start_main\n  36:     0x608d96a3bc05 - _start\n  37:                0x0 - <unknown>\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b808a7f0ab2 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5b808a7f0ab2 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5b808a7f0ab2 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5b808a7f0ab2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5b808a80156a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5b808a80156a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5b808a7bdbf6 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5b808a7bdbf6 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5b808a7ce929 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5b808a7ce929 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5b808a7ce7c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5b808a75ad6e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5b808a75ad6e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5b808a7ceba2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5b808a7ceba2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5b808a7ce9e8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5b808a7c99c9 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5b808a7b27ed - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5b808a808ddc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5b808a6f9e18 - core::panicking::panic_display::h5d0151f74659ec89
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5b808a6ef9e7 - assert_cmd::assert::AssertError::panic::hc58f06ef11a447b7
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:1036:9
[INFO] [stdout]   21:     0x5b808a6f49b7 - core::ops::function::FnOnce::call_once::h9b4e3cfc03e0bffb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5b808a6f9774 - core::result::Result<T,E>::unwrap_or_else::hf4ed83b28e0c0643
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5b808a6f05a0 - assert_cmd::assert::Assert::success::h32fa7799fa48f3a0
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:156:28
[INFO] [stdout]   24:     0x5b808a6ebd41 - cli::run_read_file::h3b3fe5639d01fb08
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:63:10
[INFO] [stdout]   25:     0x5b808a6eb88e - cli::test_bytes::h08dd47f73e36316a
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:132:5
[INFO] [stdout]   26:     0x5b808a6eb907 - cli::test_bytes::{{closure}}::he307b8145193a0d0
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:131:16
[INFO] [stdout]   27:     0x5b808a6ecff6 - core::ops::function::FnOnce::call_once::h637c8cfccb0c9363
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5b808a75ab6b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x5b808a75ab6b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x5b808a76e53a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x5b808a76e53a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x5b808a76e53a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   33:     0x5b808a76e53a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   34:     0x5b808a76e53a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x5b808a76e53a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x5b808a76e53a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x5b808a748994 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x5b808a748994 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   39:     0x5b808a74c252 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   40:     0x5b808a74c252 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x5b808a74c252 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   42:     0x5b808a74c252 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   43:     0x5b808a74c252 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x5b808a74c252 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   45:     0x5b808a74c252 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x5b808a7c4b3f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   47:     0x5b808a7c4b3f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   48:     0x70877933caa4 - <unknown>
[INFO] [stdout]   49:     0x7087793c9a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- read_lines stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'read_lines' (32) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code-101
[INFO] [stdout] stderr=```"\nthread \'main\' (47) panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x63d052756242 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x63d052756242 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x63d052756242 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9\n   3:     0x63d052756242 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26\n   4:     0x63d052765cba - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76\n   5:     0x63d052765cba - core::fmt::write::h952c506e2dbe9cff\n   6:     0x63d052731f16 - std::io::default_write_fmt::h72db0b4dbd5dcfa2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11\n   7:     0x63d052731f16 - std::io::Write::write_fmt::hb496f2b9b027aa16\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13\n   8:     0x63d052739c96 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9\n   9:     0x63d052739c96 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27\n  10:     0x63d052739af6 - std::panicking::default_hook::h0134d220cc034c02\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:319:9\n  11:     0x63d052739edb - std::panicking::panic_with_hook::h8119b6db1fef734f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:825:13\n  12:     0x63d052739d58 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13\n  13:     0x63d052738089 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18\n  14:     0x63d0527266fd - __rustc[e4c6931bd8050421]::rust_begin_unwind\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5\n  15:     0x63d05276a91c - core::panicking::panic_fmt::hb1614a3ff6840071\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14\n  16:     0x63d0525ffa8e - clap::parse::matches::arg_matches::assert_utf8_validation::hd7aa09d715ff4135\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x63d0525ff86b - clap::parse::matches::arg_matches::ArgMatches::value_of::h716e467639967e02\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x63d0526032e5 - headr::get_args::h64466543972541ba\n                               at /opt/rustwide/workdir/src/lib.rs:88:10\n  19:     0x63d0525fdec2 - headr::main::hb756bc80b1918edb\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x63d0525fdd8b - core::ops::function::FnOnce::call_once::h9310c86c5dafe1f1\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5\n  21:     0x63d0525fdd4e - std::sys::backtrace::__rust_begin_short_backtrace::he8cf27792119c3ba\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18\n  22:     0x63d0525fdd21 - std::rt::lang_start::{{closure}}::h4a3e37baecc27c1f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:206:18\n  23:     0x63d052733896 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd1cc8864ab2ce613\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:287:21\n  24:     0x63d052733896 - std::panicking::catch_unwind::do_call::h761b8a8d54647a61\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  25:     0x63d052733896 - std::panicking::catch_unwind::hb78a0edcad597ebc\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  26:     0x63d052733896 - std::panic::catch_unwind::hf40177800cac754b\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  27:     0x63d052733896 - std::rt::lang_start_internal::{{closure}}::ha1b3ca2f45db2265\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:175:24\n  28:     0x63d052733896 - std::panicking::catch_unwind::do_call::hca68f60e509d57f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  29:     0x63d052733896 - std::panicking::catch_unwind::h75a65b4419799b0f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  30:     0x63d052733896 - std::panic::catch_unwind::h56fc4c7ccdf741b6\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  31:     0x63d052733896 - std::rt::lang_start_internal::h267ec6e0203f10ab\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:171:5\n  32:     0x63d0525fdd07 - std::rt::lang_start::h68c6ce891313f560\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:205:5\n  33:     0x63d0525fdfde - main\n  34:     0x70c5a0ae51ca - <unknown>\n  35:     0x70c5a0ae528b - __libc_start_main\n  36:     0x63d0525fdc05 - _start\n  37:                0x0 - <unknown>\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/headr" "-n=3" "tests/inputs/ten.txt"`
[INFO] [stdout] code=101
[INFO] [stdout] stdout=""
[INFO] [stdout] stderr="\nthread \'main\' (47) panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x63d052756242 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x63d052756242 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x63d052756242 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9\n   3:     0x63d052756242 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26\n   4:     0x63d052765cba - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76\n   5:     0x63d052765cba - core::fmt::write::h952c506e2dbe9cff\n   6:     0x63d052731f16 - std::io::default_write_fmt::h72db0b4dbd5dcfa2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11\n   7:     0x63d052731f16 - std::io::Write::write_fmt::hb496f2b9b027aa16\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13\n   8:     0x63d052739c96 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9\n   9:     0x63d052739c96 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27\n  10:     0x63d052739af6 - std::panicking::default_hook::h0134d220cc034c02\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:319:9\n  11:     0x63d052739edb - std::panicking::panic_with_hook::h8119b6db1fef734f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:825:13\n  12:     0x63d052739d58 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13\n  13:     0x63d052738089 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18\n  14:     0x63d0527266fd - __rustc[e4c6931bd8050421]::rust_begin_unwind\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5\n  15:     0x63d05276a91c - core::panicking::panic_fmt::hb1614a3ff6840071\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14\n  16:     0x63d0525ffa8e - clap::parse::matches::arg_matches::assert_utf8_validation::hd7aa09d715ff4135\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x63d0525ff86b - clap::parse::matches::arg_matches::ArgMatches::value_of::h716e467639967e02\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x63d0526032e5 - headr::get_args::h64466543972541ba\n                               at /opt/rustwide/workdir/src/lib.rs:88:10\n  19:     0x63d0525fdec2 - headr::main::hb756bc80b1918edb\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x63d0525fdd8b - core::ops::function::FnOnce::call_once::h9310c86c5dafe1f1\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5\n  21:     0x63d0525fdd4e - std::sys::backtrace::__rust_begin_short_backtrace::he8cf27792119c3ba\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18\n  22:     0x63d0525fdd21 - std::rt::lang_start::{{closure}}::h4a3e37baecc27c1f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:206:18\n  23:     0x63d052733896 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd1cc8864ab2ce613\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:287:21\n  24:     0x63d052733896 - std::panicking::catch_unwind::do_call::h761b8a8d54647a61\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  25:     0x63d052733896 - std::panicking::catch_unwind::hb78a0edcad597ebc\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  26:     0x63d052733896 - std::panic::catch_unwind::hf40177800cac754b\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  27:     0x63d052733896 - std::rt::lang_start_internal::{{closure}}::ha1b3ca2f45db2265\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:175:24\n  28:     0x63d052733896 - std::panicking::catch_unwind::do_call::hca68f60e509d57f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  29:     0x63d052733896 - std::panicking::catch_unwind::h75a65b4419799b0f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  30:     0x63d052733896 - std::panic::catch_unwind::h56fc4c7ccdf741b6\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  31:     0x63d052733896 - std::rt::lang_start_internal::h267ec6e0203f10ab\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:171:5\n  32:     0x63d0525fdd07 - std::rt::lang_start::h68c6ce891313f560\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:205:5\n  33:     0x63d0525fdfde - main\n  34:     0x70c5a0ae51ca - <unknown>\n  35:     0x70c5a0ae528b - __libc_start_main\n  36:     0x63d0525fdc05 - _start\n  37:                0x0 - <unknown>\n"
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--test cli`
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b808a7f0ab2 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5b808a7f0ab2 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5b808a7f0ab2 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5b808a7f0ab2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5b808a80156a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5b808a80156a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5b808a7bdbf6 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5b808a7bdbf6 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5b808a7ce929 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5b808a7ce929 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5b808a7ce7c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5b808a75ad6e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5b808a75ad6e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5b808a7ceba2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5b808a7ceba2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5b808a7ce9e8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5b808a7c99c9 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5b808a7b27ed - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5b808a808ddc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5b808a6f9e18 - core::panicking::panic_display::h5d0151f74659ec89
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5b808a6ef9e7 - assert_cmd::assert::AssertError::panic::hc58f06ef11a447b7
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:1036:9
[INFO] [stdout]   21:     0x5b808a6f49b7 - core::ops::function::FnOnce::call_once::h9b4e3cfc03e0bffb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5b808a6f9774 - core::result::Result<T,E>::unwrap_or_else::hf4ed83b28e0c0643
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5b808a6f05a0 - assert_cmd::assert::Assert::success::h32fa7799fa48f3a0
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:156:28
[INFO] [stdout]   24:     0x5b808a6ebd41 - cli::run_read_file::h3b3fe5639d01fb08
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:63:10
[INFO] [stdout]   25:     0x5b808a6eb72e - cli::read_lines::h1bb6d81532ad3bfc
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:86:5
[INFO] [stdout]   26:     0x5b808a6eb857 - cli::read_lines::{{closure}}::ha010d4c954f73dc9
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:85:16
[INFO] [stdout]   27:     0x5b808a6ecee6 - core::ops::function::FnOnce::call_once::h1d293f1be52f5c7e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5b808a75ab6b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x5b808a75ab6b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x5b808a76e53a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x5b808a76e53a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x5b808a76e53a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   33:     0x5b808a76e53a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   34:     0x5b808a76e53a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x5b808a76e53a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x5b808a76e53a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x5b808a748994 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x5b808a748994 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   39:     0x5b808a74c252 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   40:     0x5b808a74c252 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x5b808a74c252 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   42:     0x5b808a74c252 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   43:     0x5b808a74c252 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x5b808a74c252 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   45:     0x5b808a74c252 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x5b808a7c4b3f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   47:     0x5b808a7c4b3f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   48:     0x70877933caa4 - <unknown>
[INFO] [stdout]   49:     0x7087793c9a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- read_lines_from_files stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'read_lines_from_files' (33) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code-101
[INFO] [stdout] stderr=```"\nthread \'main\' (57) panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x63cb8e156242 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x63cb8e156242 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x63cb8e156242 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9\n   3:     0x63cb8e156242 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26\n   4:     0x63cb8e165cba - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76\n   5:     0x63cb8e165cba - core::fmt::write::h952c506e2dbe9cff\n   6:     0x63cb8e131f16 - std::io::default_write_fmt::h72db0b4dbd5dcfa2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11\n   7:     0x63cb8e131f16 - std::io::Write::write_fmt::hb496f2b9b027aa16\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13\n   8:     0x63cb8e139c96 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9\n   9:     0x63cb8e139c96 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27\n  10:     0x63cb8e139af6 - std::panicking::default_hook::h0134d220cc034c02\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:319:9\n  11:     0x63cb8e139edb - std::panicking::panic_with_hook::h8119b6db1fef734f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:825:13\n  12:     0x63cb8e139d58 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13\n  13:     0x63cb8e138089 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18\n  14:     0x63cb8e1266fd - __rustc[e4c6931bd8050421]::rust_begin_unwind\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5\n  15:     0x63cb8e16a91c - core::panicking::panic_fmt::hb1614a3ff6840071\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14\n  16:     0x63cb8dfffa8e - clap::parse::matches::arg_matches::assert_utf8_validation::hd7aa09d715ff4135\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x63cb8dfff86b - clap::parse::matches::arg_matches::ArgMatches::value_of::h716e467639967e02\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x63cb8e0032e5 - headr::get_args::h64466543972541ba\n                               at /opt/rustwide/workdir/src/lib.rs:88:10\n  19:     0x63cb8dffdec2 - headr::main::hb756bc80b1918edb\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x63cb8dffdd8b - core::ops::function::FnOnce::call_once::h9310c86c5dafe1f1\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5\n  21:     0x63cb8dffdd4e - std::sys::backtrace::__rust_begin_short_backtrace::he8cf27792119c3ba\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18\n  22:     0x63cb8dffdd21 - std::rt::lang_start::{{closure}}::h4a3e37baecc27c1f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:206:18\n  23:     0x63cb8e133896 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd1cc8864ab2ce613\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:287:21\n  24:     0x63cb8e133896 - std::panicking::catch_unwind::do_call::h761b8a8d54647a61\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  25:     0x63cb8e133896 - std::panicking::catch_unwind::hb78a0edcad597ebc\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  26:     0x63cb8e133896 - std::panic::catch_unwind::hf40177800cac754b\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  27:     0x63cb8e133896 - std::rt::lang_start_internal::{{closure}}::ha1b3ca2f45db2265\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:175:24\n  28:     0x63cb8e133896 - std::panicking::catch_unwind::do_call::hca68f60e509d57f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  29:     0x63cb8e133896 - std::panicking::catch_unwind::h75a65b4419799b0f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  30:     0x63cb8e133896 - std::panic::catch_unwind::h56fc4c7ccdf741b6\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  31:     0x63cb8e133896 - std::rt::lang_start_internal::h267ec6e0203f10ab\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:171:5\n  32:     0x63cb8dffdd07 - std::rt::lang_start::h68c6ce891313f560\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:205:5\n  33:     0x63cb8dffdfde - main\n  34:     0x7072b9b281ca - <unknown>\n  35:     0x7072b9b2828b - __libc_start_main\n  36:     0x63cb8dffdc05 - _start\n  37:                0x0 - <unknown>\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/headr" "-n=2" "tests/inputs/three-lines.txt"`
[INFO] [stdout] code=101
[INFO] [stdout] stdout=""
[INFO] [stdout] stderr="\nthread \'main\' (57) panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x63cb8e156242 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x63cb8e156242 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x63cb8e156242 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9\n   3:     0x63cb8e156242 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26\n   4:     0x63cb8e165cba - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76\n   5:     0x63cb8e165cba - core::fmt::write::h952c506e2dbe9cff\n   6:     0x63cb8e131f16 - std::io::default_write_fmt::h72db0b4dbd5dcfa2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11\n   7:     0x63cb8e131f16 - std::io::Write::write_fmt::hb496f2b9b027aa16\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13\n   8:     0x63cb8e139c96 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9\n   9:     0x63cb8e139c96 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27\n  10:     0x63cb8e139af6 - std::panicking::default_hook::h0134d220cc034c02\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:319:9\n  11:     0x63cb8e139edb - std::panicking::panic_with_hook::h8119b6db1fef734f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:825:13\n  12:     0x63cb8e139d58 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13\n  13:     0x63cb8e138089 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18\n  14:     0x63cb8e1266fd - __rustc[e4c6931bd8050421]::rust_begin_unwind\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5\n  15:     0x63cb8e16a91c - core::panicking::panic_fmt::hb1614a3ff6840071\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14\n  16:     0x63cb8dfffa8e - clap::parse::matches::arg_matches::assert_utf8_validation::hd7aa09d715ff4135\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x63cb8dfff86b - clap::parse::matches::arg_matches::ArgMatches::value_of::h716e467639967e02\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x63cb8e0032e5 - headr::get_args::h64466543972541ba\n                               at /opt/rustwide/workdir/src/lib.rs:88:10\n  19:     0x63cb8dffdec2 - headr::main::hb756bc80b1918edb\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x63cb8dffdd8b - core::ops::function::FnOnce::call_once::h9310c86c5dafe1f1\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5\n  21:     0x63cb8dffdd4e - std::sys::backtrace::__rust_begin_short_backtrace::he8cf27792119c3ba\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18\n  22:     0x63cb8dffdd21 - std::rt::lang_start::{{closure}}::h4a3e37baecc27c1f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:206:18\n  23:     0x63cb8e133896 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd1cc8864ab2ce613\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:287:21\n  24:     0x63cb8e133896 - std::panicking::catch_unwind::do_call::h761b8a8d54647a61\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  25:     0x63cb8e133896 - std::panicking::catch_unwind::hb78a0edcad597ebc\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  26:     0x63cb8e133896 - std::panic::catch_unwind::hf40177800cac754b\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  27:     0x63cb8e133896 - std::rt::lang_start_internal::{{closure}}::ha1b3ca2f45db2265\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:175:24\n  28:     0x63cb8e133896 - std::panicking::catch_unwind::do_call::hca68f60e509d57f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  29:     0x63cb8e133896 - std::panicking::catch_unwind::h75a65b4419799b0f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  30:     0x63cb8e133896 - std::panic::catch_unwind::h56fc4c7ccdf741b6\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  31:     0x63cb8e133896 - std::rt::lang_start_internal::h267ec6e0203f10ab\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:171:5\n  32:     0x63cb8dffdd07 - std::rt::lang_start::h68c6ce891313f560\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:205:5\n  33:     0x63cb8dffdfde - main\n  34:     0x7072b9b281ca - <unknown>\n  35:     0x7072b9b2828b - __libc_start_main\n  36:     0x63cb8dffdc05 - _start\n  37:                0x0 - <unknown>\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b808a7f0ab2 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5b808a7f0ab2 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5b808a7f0ab2 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5b808a7f0ab2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5b808a80156a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5b808a80156a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5b808a7bdbf6 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5b808a7bdbf6 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5b808a7ce929 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5b808a7ce929 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5b808a7ce7c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5b808a75ad6e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5b808a75ad6e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5b808a7ceba2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5b808a7ceba2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5b808a7ce9e8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5b808a7c99c9 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5b808a7b27ed - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5b808a808ddc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5b808a6f9e18 - core::panicking::panic_display::h5d0151f74659ec89
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5b808a6ef9e7 - assert_cmd::assert::AssertError::panic::hc58f06ef11a447b7
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:1036:9
[INFO] [stdout]   21:     0x5b808a6f49b7 - core::ops::function::FnOnce::call_once::h9b4e3cfc03e0bffb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5b808a6f9774 - core::result::Result<T,E>::unwrap_or_else::hf4ed83b28e0c0643
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5b808a6f05a0 - assert_cmd::assert::Assert::success::h32fa7799fa48f3a0
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:156:28
[INFO] [stdout]   24:     0x5b808a6ebd41 - cli::run_read_file::h3b3fe5639d01fb08
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:63:10
[INFO] [stdout]   25:     0x5b808a6ec95b - cli::read_lines_from_files::h3169ad92cbdf0acf
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:79:5
[INFO] [stdout]   26:     0x5b808a6ec977 - cli::read_lines_from_files::{{closure}}::h6d9c848818109f65
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:74:27
[INFO] [stdout]   27:     0x5b808a6ed0f6 - core::ops::function::FnOnce::call_once::hf7c2f0a708503101
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5b808a75ab6b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x5b808a75ab6b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x5b808a76e53a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x5b808a76e53a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x5b808a76e53a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   33:     0x5b808a76e53a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   34:     0x5b808a76e53a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x5b808a76e53a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x5b808a76e53a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x5b808a748994 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x5b808a748994 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   39:     0x5b808a74c252 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   40:     0x5b808a74c252 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x5b808a74c252 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   42:     0x5b808a74c252 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   43:     0x5b808a74c252 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x5b808a74c252 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   45:     0x5b808a74c252 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x5b808a7c4b3f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   47:     0x5b808a7c4b3f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   48:     0x70877933caa4 - <unknown>
[INFO] [stdout]   49:     0x7087793c9a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- test_empty stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test_empty' (38) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code-101
[INFO] [stdout] stderr=```"\nthread \'main\' (42) panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x5e7f4fecd242 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x5e7f4fecd242 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x5e7f4fecd242 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9\n   3:     0x5e7f4fecd242 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26\n   4:     0x5e7f4fedccba - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76\n   5:     0x5e7f4fedccba - core::fmt::write::h952c506e2dbe9cff\n   6:     0x5e7f4fea8f16 - std::io::default_write_fmt::h72db0b4dbd5dcfa2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11\n   7:     0x5e7f4fea8f16 - std::io::Write::write_fmt::hb496f2b9b027aa16\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13\n   8:     0x5e7f4feb0c96 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9\n   9:     0x5e7f4feb0c96 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27\n  10:     0x5e7f4feb0af6 - std::panicking::default_hook::h0134d220cc034c02\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:319:9\n  11:     0x5e7f4feb0edb - std::panicking::panic_with_hook::h8119b6db1fef734f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:825:13\n  12:     0x5e7f4feb0d58 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13\n  13:     0x5e7f4feaf089 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18\n  14:     0x5e7f4fe9d6fd - __rustc[e4c6931bd8050421]::rust_begin_unwind\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5\n  15:     0x5e7f4fee191c - core::panicking::panic_fmt::hb1614a3ff6840071\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14\n  16:     0x5e7f4fd76a8e - clap::parse::matches::arg_matches::assert_utf8_validation::hd7aa09d715ff4135\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x5e7f4fd7686b - clap::parse::matches::arg_matches::ArgMatches::value_of::h716e467639967e02\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x5e7f4fd7a2e5 - headr::get_args::h64466543972541ba\n                               at /opt/rustwide/workdir/src/lib.rs:88:10\n  19:     0x5e7f4fd74ec2 - headr::main::hb756bc80b1918edb\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x5e7f4fd74d8b - core::ops::function::FnOnce::call_once::h9310c86c5dafe1f1\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5\n  21:     0x5e7f4fd74d4e - std::sys::backtrace::__rust_begin_short_backtrace::he8cf27792119c3ba\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18\n  22:     0x5e7f4fd74d21 - std::rt::lang_start::{{closure}}::h4a3e37baecc27c1f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:206:18\n  23:     0x5e7f4feaa896 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd1cc8864ab2ce613\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:287:21\n  24:     0x5e7f4feaa896 - std::panicking::catch_unwind::do_call::h761b8a8d54647a61\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  25:     0x5e7f4feaa896 - std::panicking::catch_unwind::hb78a0edcad597ebc\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  26:     0x5e7f4feaa896 - std::panic::catch_unwind::hf40177800cac754b\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  27:     0x5e7f4feaa896 - std::rt::lang_start_internal::{{closure}}::ha1b3ca2f45db2265\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:175:24\n  28:     0x5e7f4feaa896 - std::panicking::catch_unwind::do_call::hca68f60e509d57f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  29:     0x5e7f4feaa896 - std::panicking::catch_unwind::h75a65b4419799b0f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  30:     0x5e7f4feaa896 - std::panic::catch_unwind::h56fc4c7ccdf741b6\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  31:     0x5e7f4feaa896 - std::rt::lang_start_internal::h267ec6e0203f10ab\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:171:5\n  32:     0x5e7f4fd74d07 - std::rt::lang_start::h68c6ce891313f560\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:205:5\n  33:     0x5e7f4fd74fde - main\n  34:     0x7502b4a221ca - <unknown>\n  35:     0x7502b4a2228b - __libc_start_main\n  36:     0x5e7f4fd74c05 - _start\n  37:                0x0 - <unknown>\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/headr" "-n=2" "tests/inputs/empty.txt"`
[INFO] [stdout] code=101
[INFO] [stdout] stdout=""
[INFO] [stdout] stderr="\nthread \'main\' (42) panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x5e7f4fecd242 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x5e7f4fecd242 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x5e7f4fecd242 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9\n   3:     0x5e7f4fecd242 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26\n   4:     0x5e7f4fedccba - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76\n   5:     0x5e7f4fedccba - core::fmt::write::h952c506e2dbe9cff\n   6:     0x5e7f4fea8f16 - std::io::default_write_fmt::h72db0b4dbd5dcfa2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11\n   7:     0x5e7f4fea8f16 - std::io::Write::write_fmt::hb496f2b9b027aa16\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13\n   8:     0x5e7f4feb0c96 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9\n   9:     0x5e7f4feb0c96 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27\n  10:     0x5e7f4feb0af6 - std::panicking::default_hook::h0134d220cc034c02\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:319:9\n  11:     0x5e7f4feb0edb - std::panicking::panic_with_hook::h8119b6db1fef734f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:825:13\n  12:     0x5e7f4feb0d58 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13\n  13:     0x5e7f4feaf089 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18\n  14:     0x5e7f4fe9d6fd - __rustc[e4c6931bd8050421]::rust_begin_unwind\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5\n  15:     0x5e7f4fee191c - core::panicking::panic_fmt::hb1614a3ff6840071\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14\n  16:     0x5e7f4fd76a8e - clap::parse::matches::arg_matches::assert_utf8_validation::hd7aa09d715ff4135\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x5e7f4fd7686b - clap::parse::matches::arg_matches::ArgMatches::value_of::h716e467639967e02\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x5e7f4fd7a2e5 - headr::get_args::h64466543972541ba\n                               at /opt/rustwide/workdir/src/lib.rs:88:10\n  19:     0x5e7f4fd74ec2 - headr::main::hb756bc80b1918edb\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x5e7f4fd74d8b - core::ops::function::FnOnce::call_once::h9310c86c5dafe1f1\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5\n  21:     0x5e7f4fd74d4e - std::sys::backtrace::__rust_begin_short_backtrace::he8cf27792119c3ba\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18\n  22:     0x5e7f4fd74d21 - std::rt::lang_start::{{closure}}::h4a3e37baecc27c1f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:206:18\n  23:     0x5e7f4feaa896 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd1cc8864ab2ce613\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:287:21\n  24:     0x5e7f4feaa896 - std::panicking::catch_unwind::do_call::h761b8a8d54647a61\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  25:     0x5e7f4feaa896 - std::panicking::catch_unwind::hb78a0edcad597ebc\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  26:     0x5e7f4feaa896 - std::panic::catch_unwind::hf40177800cac754b\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  27:     0x5e7f4feaa896 - std::rt::lang_start_internal::{{closure}}::ha1b3ca2f45db2265\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:175:24\n  28:     0x5e7f4feaa896 - std::panicking::catch_unwind::do_call::hca68f60e509d57f2\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40\n  29:     0x5e7f4feaa896 - std::panicking::catch_unwind::h75a65b4419799b0f\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19\n  30:     0x5e7f4feaa896 - std::panic::catch_unwind::h56fc4c7ccdf741b6\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14\n  31:     0x5e7f4feaa896 - std::rt::lang_start_internal::h267ec6e0203f10ab\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:171:5\n  32:     0x5e7f4fd74d07 - std::rt::lang_start::h68c6ce891313f560\n                               at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/rt.rs:205:5\n  33:     0x5e7f4fd74fde - main\n  34:     0x7502b4a221ca - <unknown>\n  35:     0x7502b4a2228b - __libc_start_main\n  36:     0x5e7f4fd74c05 - _start\n  37:                0x0 - <unknown>\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b808a7f0ab2 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5b808a7f0ab2 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5b808a7f0ab2 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5b808a7f0ab2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5b808a80156a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5b808a80156a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5b808a7bdbf6 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5b808a7bdbf6 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5b808a7ce929 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5b808a7ce929 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5b808a7ce7c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5b808a75ad6e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5b808a75ad6e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5b808a7ceba2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5b808a7ceba2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5b808a7ce9e8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5b808a7c99c9 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5b808a7b27ed - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5b808a808ddc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5b808a6f9e18 - core::panicking::panic_display::h5d0151f74659ec89
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5b808a6ef9e7 - assert_cmd::assert::AssertError::panic::hc58f06ef11a447b7
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:1036:9
[INFO] [stdout]   21:     0x5b808a6f49b7 - core::ops::function::FnOnce::call_once::h9b4e3cfc03e0bffb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5b808a6f9774 - core::result::Result<T,E>::unwrap_or_else::hf4ed83b28e0c0643
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5b808a6f05a0 - assert_cmd::assert::Assert::success::h32fa7799fa48f3a0
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:156:28
[INFO] [stdout]   24:     0x5b808a6ebd41 - cli::run_read_file::h3b3fe5639d01fb08
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:63:10
[INFO] [stdout]   25:     0x5b808a6eb93e - cli::test_empty::h26db74a4eb6d965e
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:68:5
[INFO] [stdout]   26:     0x5b808a6eb957 - cli::test_empty::{{closure}}::h35c078e18550c9aa
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:67:16
[INFO] [stdout]   27:     0x5b808a6ed076 - core::ops::function::FnOnce::call_once::h84df03b2ec094991
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5b808a75ab6b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x5b808a75ab6b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x5b808a76e53a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x5b808a76e53a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x5b808a76e53a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   33:     0x5b808a76e53a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   34:     0x5b808a76e53a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x5b808a76e53a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x5b808a76e53a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x5b808a748994 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x5b808a748994 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   39:     0x5b808a74c252 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   40:     0x5b808a74c252 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x5b808a74c252 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   42:     0x5b808a74c252 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   43:     0x5b808a74c252 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x5b808a74c252 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   45:     0x5b808a74c252 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x5b808a7c4b3f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   47:     0x5b808a7c4b3f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   48:     0x70877933caa4 - <unknown>
[INFO] [stdout]   49:     0x7087793c9a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     read_lines
[INFO] [stdout]     read_lines_from_files
[INFO] [stdout]     test_bytes
[INFO] [stdout]     test_empty
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 4 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "65e451e2ffdf47bff54310a36c1f66dc5b1b20e29f99880bc1857f35809ad7c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65e451e2ffdf47bff54310a36c1f66dc5b1b20e29f99880bc1857f35809ad7c2", kill_on_drop: false }`
[INFO] [stdout] 65e451e2ffdf47bff54310a36c1f66dc5b1b20e29f99880bc1857f35809ad7c2
