[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 1.76.0 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftopazus%2Fhead-rs" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/topazus/head-rs on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6-tc1/source/Cargo.toml
[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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c26a4b0c892eb39ee921bdd28070a4a66758ac4066b5dc372c1936997e8472d
[INFO] running `Command { std: "docker" "start" "-a" "0c26a4b0c892eb39ee921bdd28070a4a66758ac4066b5dc372c1936997e8472d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c26a4b0c892eb39ee921bdd28070a4a66758ac4066b5dc372c1936997e8472d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c26a4b0c892eb39ee921bdd28070a4a66758ac4066b5dc372c1936997e8472d", kill_on_drop: false }`
[INFO] [stdout] 0c26a4b0c892eb39ee921bdd28070a4a66758ac4066b5dc372c1936997e8472d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19c8b1fb89065c3f27b5acef0bef147e4ee2f40e0af2af235a399b53573567b9
[INFO] running `Command { std: "docker" "start" "-a" "19c8b1fb89065c3f27b5acef0bef147e4ee2f40e0af2af235a399b53573567b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling textwrap v0.15.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling clap_lex v0.1.1
[INFO] [stderr]    Compiling indexmap v1.8.1
[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)]` 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)]` 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: unused variable: `buf`
[INFO] [stdout]    --> src/lib.rs:232:13
[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: 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: 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)]` 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] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.35s
[INFO] running `Command { std: "docker" "inspect" "19c8b1fb89065c3f27b5acef0bef147e4ee2f40e0af2af235a399b53573567b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19c8b1fb89065c3f27b5acef0bef147e4ee2f40e0af2af235a399b53573567b9", kill_on_drop: false }`
[INFO] [stdout] 19c8b1fb89065c3f27b5acef0bef147e4ee2f40e0af2af235a399b53573567b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54e26db69dd51e09c356bf9069d44503db29c3c89c88e8ae3ced82114900b0fe
[INFO] running `Command { std: "docker" "start" "-a" "54e26db69dd51e09c356bf9069d44503db29c3c89c88e8ae3ced82114900b0fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling predicates-core v1.0.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling termtree v0.2.4
[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 rand_core v0.6.3
[INFO] [stderr]    Compiling clap v3.1.12
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[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)]` 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)]` 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: unused variable: `buf`
[INFO] [stdout]    --> src/lib.rs:232:13
[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: 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: 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)]` 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] [stdout] warning: 15 warnings emitted
[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)]` 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)]` 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: unused variable: `buf`
[INFO] [stdout]    --> src/lib.rs:232:13
[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: 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: 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)]` 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] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.86s
[INFO] running `Command { std: "docker" "inspect" "54e26db69dd51e09c356bf9069d44503db29c3c89c88e8ae3ced82114900b0fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54e26db69dd51e09c356bf9069d44503db29c3c89c88e8ae3ced82114900b0fe", kill_on_drop: false }`
[INFO] [stdout] 54e26db69dd51e09c356bf9069d44503db29c3c89c88e8ae3ced82114900b0fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c9bbffd1122eddbfda1f9186dd65408cfc0faf2d011df88027c277f2cb1ae631
[INFO] running `Command { std: "docker" "start" "-a" "c9bbffd1122eddbfda1f9186dd65408cfc0faf2d011df88027c277f2cb1ae631", 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)]` 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)]` 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: unused variable: `buf`
[INFO] [stderr]    --> src/lib.rs:232:13
[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: 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: 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)]` 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 [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/headr-7cd10781eb3aab3b)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_read_lines_file ... ok
[INFO] [stdout] test test_parse_positive_int3 ... ok
[INFO] [stdout] test test_parse_positive_int2 ... ok
[INFO] [stdout] test test_parse_positive_int ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/headr-8fe09fe6aee299e6)
[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-b1a42971325939b8)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test_random_string ... ok
[INFO] [stdout] test long_flag ... ok
[INFO] [stdout] test test_bad_lines ... ok
[INFO] [stdout] test test_bad_bytes ... 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] thread 'test_bytes' panicked at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code-101
[INFO] [stdout] stderr=```"thread \'main\' panicked at src/lib.rs:95:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `bytes`\nstack backtrace:\n   0:     0x555eb2ae1036 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5\n   1:     0x555eb2ae1036 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5\n   2:     0x555eb2ae1036 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5\n   3:     0x555eb2ae1036 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22\n   4:     0x555eb2b01b90 - core::fmt::rt::Argument::fmt::h76c38a80d925a410\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9\n   5:     0x555eb2b01b90 - core::fmt::write::h3ed6aeaa977c8e45\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17\n   6:     0x555eb2adf07f - std::io::Write::write_fmt::h78b18af5775fedb5\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15\n   7:     0x555eb2ae0e14 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5\n   8:     0x555eb2ae0e14 - std::sys_common::backtrace::print::h85035a511aafe7a8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9\n   9:     0x555eb2ae2377 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25\n  10:     0x555eb2ae20d9 - std::panicking::default_hook::hf5fcb0f213fe709a\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:292:9\n  11:     0x555eb2ae2808 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:779:13\n  12:     0x555eb2ae26e2 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13\n  13:     0x555eb2ae1536 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18\n  14:     0x555eb2ae2440 - rust_begin_unwind\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5\n  15:     0x555eb2976705 - core::panicking::panic_fmt::h784f20a50eaab275\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14\n  16:     0x555eb29802c1 - clap::parse::matches::arg_matches::assert_utf8_validation::hd3b6d1a2924b1618\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x555eb2980041 - clap::parse::matches::arg_matches::ArgMatches::value_of::h0bc13c1812524b15\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x555eb297bc2b - headr::get_args::h017c9290fb7d6dae\n                               at /opt/rustwide/workdir/src/lib.rs:94:17\n  19:     0x555eb29773ea - headr::main::h0609dc76f6e6bb95\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x555eb297725b - core::ops::function::FnOnce::call_once::h24889310df7cbe8f\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5\n  21:     0x555eb297703e - std::sys_common::backtrace::__rust_begin_short_backtrace::h88aa3c31f06526e3\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18\n  22:     0x555eb29770b1 - std::rt::lang_start::{{closure}}::h301e68fcce67a5b8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:166:18\n  23:     0x555eb2ada0d1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h37600b1e5eea4ecd\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:284:13\n  24:     0x555eb2ada0d1 - std::panicking::try::do_call::hb4bda49fa13a0c2b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  25:     0x555eb2ada0d1 - std::panicking::try::h8bbf75149211aaaa\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  26:     0x555eb2ada0d1 - std::panic::catch_unwind::h8c78ec68ebea34cb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  27:     0x555eb2ada0d1 - std::rt::lang_start_internal::{{closure}}::hffdf44a19fd9e220\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:48\n  28:     0x555eb2ada0d1 - std::panicking::try::do_call::hcb3194972c74716d\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  29:     0x555eb2ada0d1 - std::panicking::try::hcdc6892c5f0dba4c\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  30:     0x555eb2ada0d1 - std::panic::catch_unwind::h4910beb4573f4776\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  31:     0x555eb2ada0d1 - std::rt::lang_start_internal::h6939038e2873596b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:20\n  32:     0x555eb297708a - std::rt::lang_start::ha0bcb950d7ac1cea\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:165:17\n  33:     0x555eb297754e - main\n  34:     0x7ff39be86d90 - <unknown>\n  35:     0x7ff39be86e40 - __libc_start_main\n  36:     0x555eb2976f65 - _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="thread \'main\' panicked at src/lib.rs:95:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `bytes`\nstack backtrace:\n   0:     0x555eb2ae1036 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5\n   1:     0x555eb2ae1036 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5\n   2:     0x555eb2ae1036 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5\n   3:     0x555eb2ae1036 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22\n   4:     0x555eb2b01b90 - core::fmt::rt::Argument::fmt::h76c38a80d925a410\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9\n   5:     0x555eb2b01b90 - core::fmt::write::h3ed6aeaa977c8e45\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17\n   6:     0x555eb2adf07f - std::io::Write::write_fmt::h78b18af5775fedb5\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15\n   7:     0x555eb2ae0e14 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5\n   8:     0x555eb2ae0e14 - std::sys_common::backtrace::print::h85035a511aafe7a8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9\n   9:     0x555eb2ae2377 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25\n  10:     0x555eb2ae20d9 - std::panicking::default_hook::hf5fcb0f213fe709a\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:292:9\n  11:     0x555eb2ae2808 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:779:13\n  12:     0x555eb2ae26e2 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13\n  13:     0x555eb2ae1536 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18\n  14:     0x555eb2ae2440 - rust_begin_unwind\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5\n  15:     0x555eb2976705 - core::panicking::panic_fmt::h784f20a50eaab275\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14\n  16:     0x555eb29802c1 - clap::parse::matches::arg_matches::assert_utf8_validation::hd3b6d1a2924b1618\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x555eb2980041 - clap::parse::matches::arg_matches::ArgMatches::value_of::h0bc13c1812524b15\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x555eb297bc2b - headr::get_args::h017c9290fb7d6dae\n                               at /opt/rustwide/workdir/src/lib.rs:94:17\n  19:     0x555eb29773ea - headr::main::h0609dc76f6e6bb95\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x555eb297725b - core::ops::function::FnOnce::call_once::h24889310df7cbe8f\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5\n  21:     0x555eb297703e - std::sys_common::backtrace::__rust_begin_short_backtrace::h88aa3c31f06526e3\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18\n  22:     0x555eb29770b1 - std::rt::lang_start::{{closure}}::h301e68fcce67a5b8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:166:18\n  23:     0x555eb2ada0d1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h37600b1e5eea4ecd\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:284:13\n  24:     0x555eb2ada0d1 - std::panicking::try::do_call::hb4bda49fa13a0c2b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  25:     0x555eb2ada0d1 - std::panicking::try::h8bbf75149211aaaa\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  26:     0x555eb2ada0d1 - std::panic::catch_unwind::h8c78ec68ebea34cb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  27:     0x555eb2ada0d1 - std::rt::lang_start_internal::{{closure}}::hffdf44a19fd9e220\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:48\n  28:     0x555eb2ada0d1 - std::panicking::try::do_call::hcb3194972c74716d\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  29:     0x555eb2ada0d1 - std::panicking::try::hcdc6892c5f0dba4c\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  30:     0x555eb2ada0d1 - std::panic::catch_unwind::h4910beb4573f4776\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  31:     0x555eb2ada0d1 - std::rt::lang_start_internal::h6939038e2873596b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:20\n  32:     0x555eb297708a - std::rt::lang_start::ha0bcb950d7ac1cea\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:165:17\n  33:     0x555eb297754e - main\n  34:     0x7ff39be86d90 - <unknown>\n  35:     0x7ff39be86e40 - __libc_start_main\n  36:     0x555eb2976f65 - _start\n  37:                0x0 - <unknown>\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5580683de216 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x5580683de216 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5580683de216 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x5580683de216 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x558068407f90 - core::fmt::rt::Argument::fmt::h76c38a80d925a410
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x558068407f90 - core::fmt::write::h3ed6aeaa977c8e45
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x5580683db3df - std::io::Write::write_fmt::h1299aa7741865f2b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x5580683ddff4 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x5580683ddff4 - std::sys_common::backtrace::print::h85035a511aafe7a8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x5580683dfde7 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25
[INFO] [stdout]   10:     0x5580683dfacd - std::panicking::default_hook::hf5fcb0f213fe709a
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x558068373eb7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h60265c2dfa87ee34
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x558068373eb7 - test::test_main::{{closure}}::h77865bd3127078c6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x5580683e0406 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbc5ccf4eb663e1e5
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x5580683e0406 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x5580683e0152 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x5580683de716 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x5580683dfeb0 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x5580682d41b5 - core::panicking::panic_fmt::h784f20a50eaab275
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x5580682e291f - core::panicking::panic_display::h6cf4f5b39d5f0725
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:196:5
[INFO] [stdout]   20:     0x5580682e76e7 - assert_cmd::assert::AssertError::panic::hdb94181d2e616677
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/assert_cmd-2.0.4/src/assert.rs:1036:9
[INFO] [stdout]   21:     0x5580682e3e87 - core::ops::function::FnOnce::call_once::hacf97fb975ae5e69
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5580682e1f90 - core::result::Result<T,E>::unwrap_or_else::hf35618b8e6d379d1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/result.rs:1426:23
[INFO] [stdout]   23:     0x5580682e6cd6 - assert_cmd::assert::Assert::success::h7d8daf03cc09cad2
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/assert_cmd-2.0.4/src/assert.rs:156:9
[INFO] [stdout]   24:     0x5580682d8a1c - cli::run_read_file::h6c63ee5a53eca8f2
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:59:5
[INFO] [stdout]   25:     0x5580682d943e - cli::test_bytes::h36fad5773a43d5d1
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:132:5
[INFO] [stdout]   26:     0x5580682d9407 - cli::test_bytes::{{closure}}::hcb859fd679ff7ca2
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:131:16
[INFO] [stdout]   27:     0x5580682d67c6 - core::ops::function::FnOnce::call_once::h4c308956ecf79de9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x55806837978f - core::ops::function::FnOnce::call_once::h8dc6907944022cf6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x55806837978f - test::__rust_begin_short_backtrace::haae1a87433f1efb3
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:627:18
[INFO] [stdout]   30:     0x558068378511 - test::run_test_in_process::{{closure}}::h8c7decfa7c14e152
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:60
[INFO] [stdout]   31:     0x558068378511 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h19e6ff056d9d21e9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   32:     0x558068378511 - std::panicking::try::do_call::h89c848fcaa37c035
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   33:     0x558068378511 - std::panicking::try::h57ab3dc74e2839b8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   34:     0x558068378511 - std::panic::catch_unwind::hfb6a1b1abc120fb9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   35:     0x558068378511 - test::run_test_in_process::h5ae2f9875edd562d
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:27
[INFO] [stdout]   36:     0x558068378511 - test::run_test::{{closure}}::h35d7300d8928a067
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:573:43
[INFO] [stdout]   37:     0x55806833f846 - test::run_test::{{closure}}::h7525ced405d23d1b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:601:41
[INFO] [stdout]   38:     0x55806833f846 - std::sys_common::backtrace::__rust_begin_short_backtrace::h4e7db78ce05afad8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   39:     0x5580683448a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hcfbcb64f1a1b3482
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   40:     0x5580683448a7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9d89c5c4108bd689
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   41:     0x5580683448a7 - std::panicking::try::do_call::h8a4869bc94ec50c9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   42:     0x5580683448a7 - std::panicking::try::h9a576f20ff81ac30
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   43:     0x5580683448a7 - std::panic::catch_unwind::hbcb4e3f860ef9830
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   44:     0x5580683448a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h93c79a6be1505948
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   45:     0x5580683448a7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h426d96740c81bdaf
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x5580683e5885 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h12de4fc57affb195
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   47:     0x5580683e5885 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3c619f45059d5cf1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   48:     0x5580683e5885 - std::sys::unix::thread::Thread::new::thread_start::hbac657605e4b7389
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   49:     0x7fd663c8dac3 - <unknown>
[INFO] [stdout]   50:     0x7fd663d1ebf4 - __clone
[INFO] [stdout]   51:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- read_lines stdout ----
[INFO] [stdout] thread 'read_lines' panicked at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code-101
[INFO] [stdout] stderr=```"thread \'main\' panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x562fce7b7036 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5\n   1:     0x562fce7b7036 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5\n   2:     0x562fce7b7036 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5\n   3:     0x562fce7b7036 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22\n   4:     0x562fce7d7b90 - core::fmt::rt::Argument::fmt::h76c38a80d925a410\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9\n   5:     0x562fce7d7b90 - core::fmt::write::h3ed6aeaa977c8e45\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17\n   6:     0x562fce7b507f - std::io::Write::write_fmt::h78b18af5775fedb5\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15\n   7:     0x562fce7b6e14 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5\n   8:     0x562fce7b6e14 - std::sys_common::backtrace::print::h85035a511aafe7a8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9\n   9:     0x562fce7b8377 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25\n  10:     0x562fce7b80d9 - std::panicking::default_hook::hf5fcb0f213fe709a\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:292:9\n  11:     0x562fce7b8808 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:779:13\n  12:     0x562fce7b86e2 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13\n  13:     0x562fce7b7536 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18\n  14:     0x562fce7b8440 - rust_begin_unwind\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5\n  15:     0x562fce64c705 - core::panicking::panic_fmt::h784f20a50eaab275\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14\n  16:     0x562fce6562c1 - clap::parse::matches::arg_matches::assert_utf8_validation::hd3b6d1a2924b1618\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x562fce656041 - clap::parse::matches::arg_matches::ArgMatches::value_of::h0bc13c1812524b15\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x562fce651b2d - headr::get_args::h017c9290fb7d6dae\n                               at /opt/rustwide/workdir/src/lib.rs:87:17\n  19:     0x562fce64d3ea - headr::main::h0609dc76f6e6bb95\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x562fce64d25b - core::ops::function::FnOnce::call_once::h24889310df7cbe8f\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5\n  21:     0x562fce64d03e - std::sys_common::backtrace::__rust_begin_short_backtrace::h88aa3c31f06526e3\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18\n  22:     0x562fce64d0b1 - std::rt::lang_start::{{closure}}::h301e68fcce67a5b8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:166:18\n  23:     0x562fce7b00d1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h37600b1e5eea4ecd\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:284:13\n  24:     0x562fce7b00d1 - std::panicking::try::do_call::hb4bda49fa13a0c2b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  25:     0x562fce7b00d1 - std::panicking::try::h8bbf75149211aaaa\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  26:     0x562fce7b00d1 - std::panic::catch_unwind::h8c78ec68ebea34cb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  27:     0x562fce7b00d1 - std::rt::lang_start_internal::{{closure}}::hffdf44a19fd9e220\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:48\n  28:     0x562fce7b00d1 - std::panicking::try::do_call::hcb3194972c74716d\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  29:     0x562fce7b00d1 - std::panicking::try::hcdc6892c5f0dba4c\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  30:     0x562fce7b00d1 - std::panic::catch_unwind::h4910beb4573f4776\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  31:     0x562fce7b00d1 - std::rt::lang_start_internal::h6939038e2873596b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:20\n  32:     0x562fce64d08a - std::rt::lang_start::ha0bcb950d7ac1cea\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:165:17\n  33:     0x562fce64d54e - main\n  34:     0x7f87446d5d90 - <unknown>\n  35:     0x7f87446d5e40 - __libc_start_main\n  36:     0x562fce64cf65 - _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] [stderr] error: test failed, to rerun pass `--test cli`
[INFO] [stdout] stderr="thread \'main\' panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x562fce7b7036 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5\n   1:     0x562fce7b7036 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5\n   2:     0x562fce7b7036 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5\n   3:     0x562fce7b7036 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22\n   4:     0x562fce7d7b90 - core::fmt::rt::Argument::fmt::h76c38a80d925a410\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9\n   5:     0x562fce7d7b90 - core::fmt::write::h3ed6aeaa977c8e45\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17\n   6:     0x562fce7b507f - std::io::Write::write_fmt::h78b18af5775fedb5\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15\n   7:     0x562fce7b6e14 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5\n   8:     0x562fce7b6e14 - std::sys_common::backtrace::print::h85035a511aafe7a8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9\n   9:     0x562fce7b8377 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25\n  10:     0x562fce7b80d9 - std::panicking::default_hook::hf5fcb0f213fe709a\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:292:9\n  11:     0x562fce7b8808 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:779:13\n  12:     0x562fce7b86e2 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13\n  13:     0x562fce7b7536 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18\n  14:     0x562fce7b8440 - rust_begin_unwind\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5\n  15:     0x562fce64c705 - core::panicking::panic_fmt::h784f20a50eaab275\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14\n  16:     0x562fce6562c1 - clap::parse::matches::arg_matches::assert_utf8_validation::hd3b6d1a2924b1618\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x562fce656041 - clap::parse::matches::arg_matches::ArgMatches::value_of::h0bc13c1812524b15\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x562fce651b2d - headr::get_args::h017c9290fb7d6dae\n                               at /opt/rustwide/workdir/src/lib.rs:87:17\n  19:     0x562fce64d3ea - headr::main::h0609dc76f6e6bb95\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x562fce64d25b - core::ops::function::FnOnce::call_once::h24889310df7cbe8f\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5\n  21:     0x562fce64d03e - std::sys_common::backtrace::__rust_begin_short_backtrace::h88aa3c31f06526e3\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18\n  22:     0x562fce64d0b1 - std::rt::lang_start::{{closure}}::h301e68fcce67a5b8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:166:18\n  23:     0x562fce7b00d1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h37600b1e5eea4ecd\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:284:13\n  24:     0x562fce7b00d1 - std::panicking::try::do_call::hb4bda49fa13a0c2b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  25:     0x562fce7b00d1 - std::panicking::try::h8bbf75149211aaaa\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  26:     0x562fce7b00d1 - std::panic::catch_unwind::h8c78ec68ebea34cb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  27:     0x562fce7b00d1 - std::rt::lang_start_internal::{{closure}}::hffdf44a19fd9e220\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:48\n  28:     0x562fce7b00d1 - std::panicking::try::do_call::hcb3194972c74716d\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  29:     0x562fce7b00d1 - std::panicking::try::hcdc6892c5f0dba4c\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  30:     0x562fce7b00d1 - std::panic::catch_unwind::h4910beb4573f4776\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  31:     0x562fce7b00d1 - std::rt::lang_start_internal::h6939038e2873596b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:20\n  32:     0x562fce64d08a - std::rt::lang_start::ha0bcb950d7ac1cea\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:165:17\n  33:     0x562fce64d54e - main\n  34:     0x7f87446d5d90 - <unknown>\n  35:     0x7f87446d5e40 - __libc_start_main\n  36:     0x562fce64cf65 - _start\n  37:                0x0 - <unknown>\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5580683de216 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x5580683de216 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5580683de216 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x5580683de216 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x558068407f90 - core::fmt::rt::Argument::fmt::h76c38a80d925a410
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x558068407f90 - core::fmt::write::h3ed6aeaa977c8e45
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x5580683db3df - std::io::Write::write_fmt::h1299aa7741865f2b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x5580683ddff4 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x5580683ddff4 - std::sys_common::backtrace::print::h85035a511aafe7a8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x5580683dfde7 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25
[INFO] [stdout]   10:     0x5580683dfacd - std::panicking::default_hook::hf5fcb0f213fe709a
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x558068373eb7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h60265c2dfa87ee34
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x558068373eb7 - test::test_main::{{closure}}::h77865bd3127078c6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x5580683e0406 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbc5ccf4eb663e1e5
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x5580683e0406 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x5580683e0152 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x5580683de716 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x5580683dfeb0 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x5580682d41b5 - core::panicking::panic_fmt::h784f20a50eaab275
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x5580682e291f - core::panicking::panic_display::h6cf4f5b39d5f0725
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:196:5
[INFO] [stdout]   20:     0x5580682e76e7 - assert_cmd::assert::AssertError::panic::hdb94181d2e616677
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/assert_cmd-2.0.4/src/assert.rs:1036:9
[INFO] [stdout]   21:     0x5580682e3e87 - core::ops::function::FnOnce::call_once::hacf97fb975ae5e69
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5580682e1f90 - core::result::Result<T,E>::unwrap_or_else::hf35618b8e6d379d1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/result.rs:1426:23
[INFO] [stdout]   23:     0x5580682e6cd6 - assert_cmd::assert::Assert::success::h7d8daf03cc09cad2
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/assert_cmd-2.0.4/src/assert.rs:156:9
[INFO] [stdout]   24:     0x5580682d8a1c - cli::run_read_file::h6c63ee5a53eca8f2
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:59:5
[INFO] [stdout]   25:     0x5580682d929e - cli::read_lines::h7276efbe8a2cbf8a
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:86:5
[INFO] [stdout]   26:     0x5580682d9267 - cli::read_lines::{{closure}}::h3db0fc17cecb2fe1
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:85:16
[INFO] [stdout]   27:     0x5580682d68d6 - core::ops::function::FnOnce::call_once::he2a6df0ce93b7843
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x55806837978f - core::ops::function::FnOnce::call_once::h8dc6907944022cf6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x55806837978f - test::__rust_begin_short_backtrace::haae1a87433f1efb3
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:627:18
[INFO] [stdout]   30:     0x558068378511 - test::run_test_in_process::{{closure}}::h8c7decfa7c14e152
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:60
[INFO] [stdout]   31:     0x558068378511 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h19e6ff056d9d21e9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   32:     0x558068378511 - std::panicking::try::do_call::h89c848fcaa37c035
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   33:     0x558068378511 - std::panicking::try::h57ab3dc74e2839b8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   34:     0x558068378511 - std::panic::catch_unwind::hfb6a1b1abc120fb9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   35:     0x558068378511 - test::run_test_in_process::h5ae2f9875edd562d
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:27
[INFO] [stdout]   36:     0x558068378511 - test::run_test::{{closure}}::h35d7300d8928a067
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:573:43
[INFO] [stdout]   37:     0x55806833f846 - test::run_test::{{closure}}::h7525ced405d23d1b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:601:41
[INFO] [stdout]   38:     0x55806833f846 - std::sys_common::backtrace::__rust_begin_short_backtrace::h4e7db78ce05afad8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   39:     0x5580683448a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hcfbcb64f1a1b3482
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   40:     0x5580683448a7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9d89c5c4108bd689
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   41:     0x5580683448a7 - std::panicking::try::do_call::h8a4869bc94ec50c9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   42:     0x5580683448a7 - std::panicking::try::h9a576f20ff81ac30
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   43:     0x5580683448a7 - std::panic::catch_unwind::hbcb4e3f860ef9830
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   44:     0x5580683448a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h93c79a6be1505948
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   45:     0x5580683448a7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h426d96740c81bdaf
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x5580683e5885 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h12de4fc57affb195
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   47:     0x5580683e5885 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3c619f45059d5cf1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   48:     0x5580683e5885 - std::sys::unix::thread::Thread::new::thread_start::hbac657605e4b7389
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   49:     0x7fd663c8dac3 - <unknown>
[INFO] [stdout]   50:     0x7fd663d1ebf4 - __clone
[INFO] [stdout]   51:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- read_lines_from_files stdout ----
[INFO] [stdout] thread 'read_lines_from_files' panicked at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code-101
[INFO] [stdout] stderr=```"thread \'main\' panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x557a4491f036 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5\n   1:     0x557a4491f036 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5\n   2:     0x557a4491f036 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5\n   3:     0x557a4491f036 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22\n   4:     0x557a4493fb90 - core::fmt::rt::Argument::fmt::h76c38a80d925a410\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9\n   5:     0x557a4493fb90 - core::fmt::write::h3ed6aeaa977c8e45\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17\n   6:     0x557a4491d07f - std::io::Write::write_fmt::h78b18af5775fedb5\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15\n   7:     0x557a4491ee14 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5\n   8:     0x557a4491ee14 - std::sys_common::backtrace::print::h85035a511aafe7a8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9\n   9:     0x557a44920377 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25\n  10:     0x557a449200d9 - std::panicking::default_hook::hf5fcb0f213fe709a\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:292:9\n  11:     0x557a44920808 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:779:13\n  12:     0x557a449206e2 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13\n  13:     0x557a4491f536 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18\n  14:     0x557a44920440 - rust_begin_unwind\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5\n  15:     0x557a447b4705 - core::panicking::panic_fmt::h784f20a50eaab275\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14\n  16:     0x557a447be2c1 - clap::parse::matches::arg_matches::assert_utf8_validation::hd3b6d1a2924b1618\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x557a447be041 - clap::parse::matches::arg_matches::ArgMatches::value_of::h0bc13c1812524b15\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x557a447b9b2d - headr::get_args::h017c9290fb7d6dae\n                               at /opt/rustwide/workdir/src/lib.rs:87:17\n  19:     0x557a447b53ea - headr::main::h0609dc76f6e6bb95\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x557a447b525b - core::ops::function::FnOnce::call_once::h24889310df7cbe8f\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5\n  21:     0x557a447b503e - std::sys_common::backtrace::__rust_begin_short_backtrace::h88aa3c31f06526e3\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18\n  22:     0x557a447b50b1 - std::rt::lang_start::{{closure}}::h301e68fcce67a5b8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:166:18\n  23:     0x557a449180d1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h37600b1e5eea4ecd\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:284:13\n  24:     0x557a449180d1 - std::panicking::try::do_call::hb4bda49fa13a0c2b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  25:     0x557a449180d1 - std::panicking::try::h8bbf75149211aaaa\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  26:     0x557a449180d1 - std::panic::catch_unwind::h8c78ec68ebea34cb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  27:     0x557a449180d1 - std::rt::lang_start_internal::{{closure}}::hffdf44a19fd9e220\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:48\n  28:     0x557a449180d1 - std::panicking::try::do_call::hcb3194972c74716d\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  29:     0x557a449180d1 - std::panicking::try::hcdc6892c5f0dba4c\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  30:     0x557a449180d1 - std::panic::catch_unwind::h4910beb4573f4776\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  31:     0x557a449180d1 - std::rt::lang_start_internal::h6939038e2873596b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:20\n  32:     0x557a447b508a - std::rt::lang_start::ha0bcb950d7ac1cea\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:165:17\n  33:     0x557a447b554e - main\n  34:     0x7f241521fd90 - <unknown>\n  35:     0x7f241521fe40 - __libc_start_main\n  36:     0x557a447b4f65 - _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="thread \'main\' panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x557a4491f036 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5\n   1:     0x557a4491f036 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5\n   2:     0x557a4491f036 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5\n   3:     0x557a4491f036 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22\n   4:     0x557a4493fb90 - core::fmt::rt::Argument::fmt::h76c38a80d925a410\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9\n   5:     0x557a4493fb90 - core::fmt::write::h3ed6aeaa977c8e45\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17\n   6:     0x557a4491d07f - std::io::Write::write_fmt::h78b18af5775fedb5\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15\n   7:     0x557a4491ee14 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5\n   8:     0x557a4491ee14 - std::sys_common::backtrace::print::h85035a511aafe7a8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9\n   9:     0x557a44920377 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25\n  10:     0x557a449200d9 - std::panicking::default_hook::hf5fcb0f213fe709a\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:292:9\n  11:     0x557a44920808 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:779:13\n  12:     0x557a449206e2 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13\n  13:     0x557a4491f536 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18\n  14:     0x557a44920440 - rust_begin_unwind\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5\n  15:     0x557a447b4705 - core::panicking::panic_fmt::h784f20a50eaab275\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14\n  16:     0x557a447be2c1 - clap::parse::matches::arg_matches::assert_utf8_validation::hd3b6d1a2924b1618\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x557a447be041 - clap::parse::matches::arg_matches::ArgMatches::value_of::h0bc13c1812524b15\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x557a447b9b2d - headr::get_args::h017c9290fb7d6dae\n                               at /opt/rustwide/workdir/src/lib.rs:87:17\n  19:     0x557a447b53ea - headr::main::h0609dc76f6e6bb95\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x557a447b525b - core::ops::function::FnOnce::call_once::h24889310df7cbe8f\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5\n  21:     0x557a447b503e - std::sys_common::backtrace::__rust_begin_short_backtrace::h88aa3c31f06526e3\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18\n  22:     0x557a447b50b1 - std::rt::lang_start::{{closure}}::h301e68fcce67a5b8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:166:18\n  23:     0x557a449180d1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h37600b1e5eea4ecd\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:284:13\n  24:     0x557a449180d1 - std::panicking::try::do_call::hb4bda49fa13a0c2b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  25:     0x557a449180d1 - std::panicking::try::h8bbf75149211aaaa\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  26:     0x557a449180d1 - std::panic::catch_unwind::h8c78ec68ebea34cb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  27:     0x557a449180d1 - std::rt::lang_start_internal::{{closure}}::hffdf44a19fd9e220\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:48\n  28:     0x557a449180d1 - std::panicking::try::do_call::hcb3194972c74716d\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  29:     0x557a449180d1 - std::panicking::try::hcdc6892c5f0dba4c\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  30:     0x557a449180d1 - std::panic::catch_unwind::h4910beb4573f4776\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  31:     0x557a449180d1 - std::rt::lang_start_internal::h6939038e2873596b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:20\n  32:     0x557a447b508a - std::rt::lang_start::ha0bcb950d7ac1cea\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:165:17\n  33:     0x557a447b554e - main\n  34:     0x7f241521fd90 - <unknown>\n  35:     0x7f241521fe40 - __libc_start_main\n  36:     0x557a447b4f65 - _start\n  37:                0x0 - <unknown>\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5580683de216 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x5580683de216 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5580683de216 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x5580683de216 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x558068407f90 - core::fmt::rt::Argument::fmt::h76c38a80d925a410
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x558068407f90 - core::fmt::write::h3ed6aeaa977c8e45
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x5580683db3df - std::io::Write::write_fmt::h1299aa7741865f2b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x5580683ddff4 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x5580683ddff4 - std::sys_common::backtrace::print::h85035a511aafe7a8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x5580683dfde7 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25
[INFO] [stdout]   10:     0x5580683dfacd - std::panicking::default_hook::hf5fcb0f213fe709a
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x558068373eb7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h60265c2dfa87ee34
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x558068373eb7 - test::test_main::{{closure}}::h77865bd3127078c6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x5580683e0406 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbc5ccf4eb663e1e5
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x5580683e0406 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x5580683e0152 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x5580683de716 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x5580683dfeb0 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x5580682d41b5 - core::panicking::panic_fmt::h784f20a50eaab275
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x5580682e291f - core::panicking::panic_display::h6cf4f5b39d5f0725
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:196:5
[INFO] [stdout]   20:     0x5580682e76e7 - assert_cmd::assert::AssertError::panic::hdb94181d2e616677
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/assert_cmd-2.0.4/src/assert.rs:1036:9
[INFO] [stdout]   21:     0x5580682e3e87 - core::ops::function::FnOnce::call_once::hacf97fb975ae5e69
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5580682e1f90 - core::result::Result<T,E>::unwrap_or_else::hf35618b8e6d379d1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/result.rs:1426:23
[INFO] [stdout]   23:     0x5580682e6cd6 - assert_cmd::assert::Assert::success::h7d8daf03cc09cad2
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/assert_cmd-2.0.4/src/assert.rs:156:9
[INFO] [stdout]   24:     0x5580682d8a1c - cli::run_read_file::h6c63ee5a53eca8f2
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:59:5
[INFO] [stdout]   25:     0x5580682d924b - cli::read_lines_from_files::he4ee057f27e3d26e
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:79:5
[INFO] [stdout]   26:     0x5580682d91f7 - cli::read_lines_from_files::{{closure}}::h985ba9da294795a6
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:74:27
[INFO] [stdout]   27:     0x5580682d6806 - core::ops::function::FnOnce::call_once::h8883fabcc9f5cde1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x55806837978f - core::ops::function::FnOnce::call_once::h8dc6907944022cf6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x55806837978f - test::__rust_begin_short_backtrace::haae1a87433f1efb3
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:627:18
[INFO] [stdout]   30:     0x558068378511 - test::run_test_in_process::{{closure}}::h8c7decfa7c14e152
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:60
[INFO] [stdout]   31:     0x558068378511 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h19e6ff056d9d21e9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   32:     0x558068378511 - std::panicking::try::do_call::h89c848fcaa37c035
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   33:     0x558068378511 - std::panicking::try::h57ab3dc74e2839b8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   34:     0x558068378511 - std::panic::catch_unwind::hfb6a1b1abc120fb9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   35:     0x558068378511 - test::run_test_in_process::h5ae2f9875edd562d
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:27
[INFO] [stdout]   36:     0x558068378511 - test::run_test::{{closure}}::h35d7300d8928a067
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:573:43
[INFO] [stdout]   37:     0x55806833f846 - test::run_test::{{closure}}::h7525ced405d23d1b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:601:41
[INFO] [stdout]   38:     0x55806833f846 - std::sys_common::backtrace::__rust_begin_short_backtrace::h4e7db78ce05afad8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   39:     0x5580683448a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hcfbcb64f1a1b3482
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   40:     0x5580683448a7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9d89c5c4108bd689
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   41:     0x5580683448a7 - std::panicking::try::do_call::h8a4869bc94ec50c9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   42:     0x5580683448a7 - std::panicking::try::h9a576f20ff81ac30
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   43:     0x5580683448a7 - std::panic::catch_unwind::hbcb4e3f860ef9830
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   44:     0x5580683448a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h93c79a6be1505948
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   45:     0x5580683448a7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h426d96740c81bdaf
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x5580683e5885 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h12de4fc57affb195
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   47:     0x5580683e5885 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3c619f45059d5cf1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   48:     0x5580683e5885 - std::sys::unix::thread::Thread::new::thread_start::hbac657605e4b7389
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   49:     0x7fd663c8dac3 - <unknown>
[INFO] [stdout]   50:     0x7fd663d1ebf4 - __clone
[INFO] [stdout]   51:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- test_empty stdout ----
[INFO] [stdout] thread 'test_empty' panicked at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code-101
[INFO] [stdout] stderr=```"thread \'main\' panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x558c7214f036 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5\n   1:     0x558c7214f036 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5\n   2:     0x558c7214f036 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5\n   3:     0x558c7214f036 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22\n   4:     0x558c7216fb90 - core::fmt::rt::Argument::fmt::h76c38a80d925a410\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9\n   5:     0x558c7216fb90 - core::fmt::write::h3ed6aeaa977c8e45\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17\n   6:     0x558c7214d07f - std::io::Write::write_fmt::h78b18af5775fedb5\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15\n   7:     0x558c7214ee14 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5\n   8:     0x558c7214ee14 - std::sys_common::backtrace::print::h85035a511aafe7a8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9\n   9:     0x558c72150377 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25\n  10:     0x558c721500d9 - std::panicking::default_hook::hf5fcb0f213fe709a\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:292:9\n  11:     0x558c72150808 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:779:13\n  12:     0x558c721506e2 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13\n  13:     0x558c7214f536 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18\n  14:     0x558c72150440 - rust_begin_unwind\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5\n  15:     0x558c71fe4705 - core::panicking::panic_fmt::h784f20a50eaab275\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14\n  16:     0x558c71fee2c1 - clap::parse::matches::arg_matches::assert_utf8_validation::hd3b6d1a2924b1618\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x558c71fee041 - clap::parse::matches::arg_matches::ArgMatches::value_of::h0bc13c1812524b15\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x558c71fe9b2d - headr::get_args::h017c9290fb7d6dae\n                               at /opt/rustwide/workdir/src/lib.rs:87:17\n  19:     0x558c71fe53ea - headr::main::h0609dc76f6e6bb95\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x558c71fe525b - core::ops::function::FnOnce::call_once::h24889310df7cbe8f\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5\n  21:     0x558c71fe503e - std::sys_common::backtrace::__rust_begin_short_backtrace::h88aa3c31f06526e3\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18\n  22:     0x558c71fe50b1 - std::rt::lang_start::{{closure}}::h301e68fcce67a5b8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:166:18\n  23:     0x558c721480d1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h37600b1e5eea4ecd\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:284:13\n  24:     0x558c721480d1 - std::panicking::try::do_call::hb4bda49fa13a0c2b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  25:     0x558c721480d1 - std::panicking::try::h8bbf75149211aaaa\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  26:     0x558c721480d1 - std::panic::catch_unwind::h8c78ec68ebea34cb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  27:     0x558c721480d1 - std::rt::lang_start_internal::{{closure}}::hffdf44a19fd9e220\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:48\n  28:     0x558c721480d1 - std::panicking::try::do_call::hcb3194972c74716d\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  29:     0x558c721480d1 - std::panicking::try::hcdc6892c5f0dba4c\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  30:     0x558c721480d1 - std::panic::catch_unwind::h4910beb4573f4776\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  31:     0x558c721480d1 - std::rt::lang_start_internal::h6939038e2873596b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:20\n  32:     0x558c71fe508a - std::rt::lang_start::ha0bcb950d7ac1cea\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:165:17\n  33:     0x558c71fe554e - main\n  34:     0x7f950e9b0d90 - <unknown>\n  35:     0x7f950e9b0e40 - __libc_start_main\n  36:     0x558c71fe4f65 - _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="thread \'main\' panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x558c7214f036 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5\n   1:     0x558c7214f036 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5\n   2:     0x558c7214f036 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5\n   3:     0x558c7214f036 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22\n   4:     0x558c7216fb90 - core::fmt::rt::Argument::fmt::h76c38a80d925a410\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9\n   5:     0x558c7216fb90 - core::fmt::write::h3ed6aeaa977c8e45\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17\n   6:     0x558c7214d07f - std::io::Write::write_fmt::h78b18af5775fedb5\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15\n   7:     0x558c7214ee14 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5\n   8:     0x558c7214ee14 - std::sys_common::backtrace::print::h85035a511aafe7a8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9\n   9:     0x558c72150377 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25\n  10:     0x558c721500d9 - std::panicking::default_hook::hf5fcb0f213fe709a\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:292:9\n  11:     0x558c72150808 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:779:13\n  12:     0x558c721506e2 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13\n  13:     0x558c7214f536 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18\n  14:     0x558c72150440 - rust_begin_unwind\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5\n  15:     0x558c71fe4705 - core::panicking::panic_fmt::h784f20a50eaab275\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14\n  16:     0x558c71fee2c1 - clap::parse::matches::arg_matches::assert_utf8_validation::hd3b6d1a2924b1618\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x558c71fee041 - clap::parse::matches::arg_matches::ArgMatches::value_of::h0bc13c1812524b15\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x558c71fe9b2d - headr::get_args::h017c9290fb7d6dae\n                               at /opt/rustwide/workdir/src/lib.rs:87:17\n  19:     0x558c71fe53ea - headr::main::h0609dc76f6e6bb95\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x558c71fe525b - core::ops::function::FnOnce::call_once::h24889310df7cbe8f\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5\n  21:     0x558c71fe503e - std::sys_common::backtrace::__rust_begin_short_backtrace::h88aa3c31f06526e3\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18\n  22:     0x558c71fe50b1 - std::rt::lang_start::{{closure}}::h301e68fcce67a5b8\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:166:18\n  23:     0x558c721480d1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h37600b1e5eea4ecd\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:284:13\n  24:     0x558c721480d1 - std::panicking::try::do_call::hb4bda49fa13a0c2b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  25:     0x558c721480d1 - std::panicking::try::h8bbf75149211aaaa\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  26:     0x558c721480d1 - std::panic::catch_unwind::h8c78ec68ebea34cb\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  27:     0x558c721480d1 - std::rt::lang_start_internal::{{closure}}::hffdf44a19fd9e220\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:48\n  28:     0x558c721480d1 - std::panicking::try::do_call::hcb3194972c74716d\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40\n  29:     0x558c721480d1 - std::panicking::try::hcdc6892c5f0dba4c\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19\n  30:     0x558c721480d1 - std::panic::catch_unwind::h4910beb4573f4776\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14\n  31:     0x558c721480d1 - std::rt::lang_start_internal::h6939038e2873596b\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:20\n  32:     0x558c71fe508a - std::rt::lang_start::ha0bcb950d7ac1cea\n                               at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:165:17\n  33:     0x558c71fe554e - main\n  34:     0x7f950e9b0d90 - <unknown>\n  35:     0x7f950e9b0e40 - __libc_start_main\n  36:     0x558c71fe4f65 - _start\n  37:                0x0 - <unknown>\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5580683de216 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x5580683de216 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5580683de216 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x5580683de216 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x558068407f90 - core::fmt::rt::Argument::fmt::h76c38a80d925a410
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x558068407f90 - core::fmt::write::h3ed6aeaa977c8e45
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x5580683db3df - std::io::Write::write_fmt::h1299aa7741865f2b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x5580683ddff4 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x5580683ddff4 - std::sys_common::backtrace::print::h85035a511aafe7a8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x5580683dfde7 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25
[INFO] [stdout]   10:     0x5580683dfacd - std::panicking::default_hook::hf5fcb0f213fe709a
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x558068373eb7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h60265c2dfa87ee34
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x558068373eb7 - test::test_main::{{closure}}::h77865bd3127078c6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x5580683e0406 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbc5ccf4eb663e1e5
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x5580683e0406 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x5580683e0152 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x5580683de716 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x5580683dfeb0 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x5580682d41b5 - core::panicking::panic_fmt::h784f20a50eaab275
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x5580682e291f - core::panicking::panic_display::h6cf4f5b39d5f0725
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:196:5
[INFO] [stdout]   20:     0x5580682e76e7 - assert_cmd::assert::AssertError::panic::hdb94181d2e616677
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/assert_cmd-2.0.4/src/assert.rs:1036:9
[INFO] [stdout]   21:     0x5580682e3e87 - core::ops::function::FnOnce::call_once::hacf97fb975ae5e69
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5580682e1f90 - core::result::Result<T,E>::unwrap_or_else::hf35618b8e6d379d1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/result.rs:1426:23
[INFO] [stdout]   23:     0x5580682e6cd6 - assert_cmd::assert::Assert::success::h7d8daf03cc09cad2
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/assert_cmd-2.0.4/src/assert.rs:156:9
[INFO] [stdout]   24:     0x5580682d8a1c - cli::run_read_file::h6c63ee5a53eca8f2
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:59:5
[INFO] [stdout]   25:     0x5580682d91de - cli::test_empty::h7d46662e49052832
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:68:5
[INFO] [stdout]   26:     0x5580682d91a7 - cli::test_empty::{{closure}}::h60e8a474c014c592
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:67:16
[INFO] [stdout]   27:     0x5580682d6956 - core::ops::function::FnOnce::call_once::hf544abd3aa1395fa
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x55806837978f - core::ops::function::FnOnce::call_once::h8dc6907944022cf6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x55806837978f - test::__rust_begin_short_backtrace::haae1a87433f1efb3
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:627:18
[INFO] [stdout]   30:     0x558068378511 - test::run_test_in_process::{{closure}}::h8c7decfa7c14e152
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:60
[INFO] [stdout]   31:     0x558068378511 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h19e6ff056d9d21e9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   32:     0x558068378511 - std::panicking::try::do_call::h89c848fcaa37c035
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   33:     0x558068378511 - std::panicking::try::h57ab3dc74e2839b8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   34:     0x558068378511 - std::panic::catch_unwind::hfb6a1b1abc120fb9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   35:     0x558068378511 - test::run_test_in_process::h5ae2f9875edd562d
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:27
[INFO] [stdout]   36:     0x558068378511 - test::run_test::{{closure}}::h35d7300d8928a067
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:573:43
[INFO] [stdout]   37:     0x55806833f846 - test::run_test::{{closure}}::h7525ced405d23d1b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:601:41
[INFO] [stdout]   38:     0x55806833f846 - std::sys_common::backtrace::__rust_begin_short_backtrace::h4e7db78ce05afad8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   39:     0x5580683448a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hcfbcb64f1a1b3482
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   40:     0x5580683448a7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9d89c5c4108bd689
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   41:     0x5580683448a7 - std::panicking::try::do_call::h8a4869bc94ec50c9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   42:     0x5580683448a7 - std::panicking::try::h9a576f20ff81ac30
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   43:     0x5580683448a7 - std::panic::catch_unwind::hbcb4e3f860ef9830
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   44:     0x5580683448a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h93c79a6be1505948
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   45:     0x5580683448a7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h426d96740c81bdaf
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x5580683e5885 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h12de4fc57affb195
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   47:     0x5580683e5885 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3c619f45059d5cf1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   48:     0x5580683e5885 - std::sys::unix::thread::Thread::new::thread_start::hbac657605e4b7389
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   49:     0x7fd663c8dac3 - <unknown>
[INFO] [stdout]   50:     0x7fd663d1ebf4 - __clone
[INFO] [stdout]   51:                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 0.10s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c9bbffd1122eddbfda1f9186dd65408cfc0faf2d011df88027c277f2cb1ae631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9bbffd1122eddbfda1f9186dd65408cfc0faf2d011df88027c277f2cb1ae631", kill_on_drop: false }`
[INFO] [stdout] c9bbffd1122eddbfda1f9186dd65408cfc0faf2d011df88027c277f2cb1ae631
