[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 1.90.0 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftopazus%2Fhead-rs" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/topazus/head-rs
[INFO] finished tweaking git repo https://github.com/topazus/head-rs
[INFO] tweaked toml for git repo https://github.com/topazus/head-rs written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/topazus/head-rs on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/topazus/head-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap_lex v0.1.1
[INFO] [stderr]   Downloaded predicates-core v1.0.3
[INFO] [stderr]   Downloaded assert_cmd v2.0.4
[INFO] [stderr]   Downloaded predicates v2.1.1
[INFO] [stderr]   Downloaded os_str_bytes v6.0.0
[INFO] [stderr]   Downloaded predicates-tree v1.0.5
[INFO] [stderr]   Downloaded clap v3.1.12
[INFO] [stderr]   Downloaded termtree v0.2.4
[INFO] [stderr]   Downloaded libc v0.2.124
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d92c02613ebeb0143255834b8032f301d88460454354ef76204f5836cdd924b
[INFO] running `Command { std: "docker" "start" "-a" "1d92c02613ebeb0143255834b8032f301d88460454354ef76204f5836cdd924b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d92c02613ebeb0143255834b8032f301d88460454354ef76204f5836cdd924b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d92c02613ebeb0143255834b8032f301d88460454354ef76204f5836cdd924b", kill_on_drop: false }`
[INFO] [stdout] 1d92c02613ebeb0143255834b8032f301d88460454354ef76204f5836cdd924b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7aabd5b1627ce3fc6ce3a720c96bdfcc78e5327d905cb8330bdc9e8efc180c6c
[INFO] running `Command { std: "docker" "start" "-a" "7aabd5b1627ce3fc6ce3a720c96bdfcc78e5327d905cb8330bdc9e8efc180c6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling textwrap v0.15.0
[INFO] [stderr]    Compiling clap_lex v0.1.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v3.1.12
[INFO] [stderr]    Compiling headr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `files_str`
[INFO] [stdout]   --> src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let files_str = matches.values_of("files").unwrap().collect::<Vec<&str>>();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_files_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.42s
[INFO] running `Command { std: "docker" "inspect" "7aabd5b1627ce3fc6ce3a720c96bdfcc78e5327d905cb8330bdc9e8efc180c6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aabd5b1627ce3fc6ce3a720c96bdfcc78e5327d905cb8330bdc9e8efc180c6c", kill_on_drop: false }`
[INFO] [stdout] 7aabd5b1627ce3fc6ce3a720c96bdfcc78e5327d905cb8330bdc9e8efc180c6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b62b14bf0ee842bbeb57bd6201ba892e8d070c254b7a204e413e55dff836b267
[INFO] running `Command { std: "docker" "start" "-a" "b62b14bf0ee842bbeb57bd6201ba892e8d070c254b7a204e413e55dff836b267", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling predicates-core v1.0.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling termtree v0.2.4
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling predicates-tree v1.0.5
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling clap v3.1.12
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling predicates v2.1.1
[INFO] [stderr]    Compiling assert_cmd v2.0.4
[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: 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.44s
[INFO] running `Command { std: "docker" "inspect" "b62b14bf0ee842bbeb57bd6201ba892e8d070c254b7a204e413e55dff836b267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b62b14bf0ee842bbeb57bd6201ba892e8d070c254b7a204e413e55dff836b267", kill_on_drop: false }`
[INFO] [stdout] b62b14bf0ee842bbeb57bd6201ba892e8d070c254b7a204e413e55dff836b267
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] de7d92e14464c45966ae7ff2db26dd14c9a2cf2e7ef0388cd1e70d736d94f946
[INFO] running `Command { std: "docker" "start" "-a" "de7d92e14464c45966ae7ff2db26dd14c9a2cf2e7ef0388cd1e70d736d94f946", 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 3 suggestions)
[INFO] [stderr] warning: `headr` (lib test) generated 11 warnings (11 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/headr-e27f3928b334c0cd)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_parse_positive_int ... ok
[INFO] [stdout] test test_parse_positive_int3 ... ok
[INFO] [stdout] test test_read_lines_file ... ok
[INFO] [stdout] test test_parse_positive_int2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/headr-1689f47e030cfea0)
[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-8a850a828954aaa0)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test long_flag ... ok
[INFO] [stdout] test test_random_string ... ok
[INFO] [stdout] test test_empty ... FAILED
[INFO] [stdout] test read_lines ... FAILED
[INFO] [stdout] test test_bytes ... FAILED
[INFO] [stdout] test read_lines_from_files ... FAILED
[INFO] [stdout] test test_bad_lines ... ok
[INFO] [stdout] test test_bad_bytes ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_empty stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test_empty' panicked at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code-101
[INFO] [stdout] stderr=```"\nthread \'main\' panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x565990984a12 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x565990984a12 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x565990984a12 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9\n   3:     0x565990984a12 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26\n   4:     0x5659909a2683 - core::fmt::rt::Argument::fmt::h2c56b3114963061a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76\n   5:     0x5659909a2683 - core::fmt::write::h8a494366950f23bb\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25\n   6:     0x565990981f83 - std::io::default_write_fmt::ha27fbccbc65eb6fa\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11\n   7:     0x565990981f83 - std::io::Write::write_fmt::h6556609fca33d0b1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13\n   8:     0x565990984862 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9\n   9:     0x565990985903 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27\n  10:     0x5659909856e5 - std::panicking::default_hook::h2c66fc99e962531d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:327:9\n  11:     0x5659909862d5 - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:833:13\n  12:     0x56599098606a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13\n  13:     0x565990984f19 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18\n  14:     0x565990985cfd - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5\n  15:     0x5659909a17d0 - core::panicking::panic_fmt::h62f63d096dd276af\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14\n  16:     0x56599083070a - clap::parse::matches::arg_matches::assert_utf8_validation::h318be762df5afd80\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x5659908304eb - clap::parse::matches::arg_matches::ArgMatches::value_of::ha6f1118cb8435cf9\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x56599082ca05 - headr::get_args::h0ca1efa85fed75cc\n                               at /opt/rustwide/workdir/src/lib.rs:88:10\n  19:     0x565990827092 - headr::main::hfc1f7496806ba185\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x565990826f5b - core::ops::function::FnOnce::call_once::h41c67ffa9bece5c2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5\n  21:     0x565990826f1e - std::sys::backtrace::__rust_begin_short_backtrace::hd1b2e539a93423c4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18\n  22:     0x565990826ef1 - std::rt::lang_start::{{closure}}::h5fc41add1257eed4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:206:18\n  23:     0x56599097ce30 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h638295a043b40957\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:290:21\n  24:     0x56599097ce30 - std::panicking::catch_unwind::do_call::hbd68098bdea1ca50\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  25:     0x56599097ce30 - std::panicking::catch_unwind::h50591d85bf847c7c\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  26:     0x56599097ce30 - std::panic::catch_unwind::h2487b4c4f2ae22c6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  27:     0x56599097ce30 - std::rt::lang_start_internal::{{closure}}::h61f0945cc6c9a811\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:175:24\n  28:     0x56599097ce30 - std::panicking::catch_unwind::do_call::h34b9c3722acd6bd1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  29:     0x56599097ce30 - std::panicking::catch_unwind::hf9a822ea043fb0d6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  30:     0x56599097ce30 - std::panic::catch_unwind::h5b3cac802237ed89\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  31:     0x56599097ce30 - std::rt::lang_start_internal::h34f9328d113fd60a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:171:5\n  32:     0x565990826ed7 - std::rt::lang_start::h91ff1c35a55b0f62\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:205:5\n  33:     0x56599082719e - main\n  34:     0x714ee701f1ca - <unknown>\n  35:     0x714ee701f28b - __libc_start_main\n  36:     0x565990826dd5 - _start\n  37:                0x0 - <unknown>\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/headr" "-n=2" "tests/inputs/empty.txt"`
[INFO] [stdout] code=101
[INFO] [stdout] stdout=""
[INFO] [stdout] stderr="\nthread \'main\' panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x565990984a12 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x565990984a12 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x565990984a12 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9\n   3:     0x565990984a12 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26\n   4:     0x5659909a2683 - core::fmt::rt::Argument::fmt::h2c56b3114963061a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76\n   5:     0x5659909a2683 - core::fmt::write::h8a494366950f23bb\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25\n   6:     0x565990981f83 - std::io::default_write_fmt::ha27fbccbc65eb6fa\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11\n   7:     0x565990981f83 - std::io::Write::write_fmt::h6556609fca33d0b1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13\n   8:     0x565990984862 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9\n   9:     0x565990985903 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27\n  10:     0x5659909856e5 - std::panicking::default_hook::h2c66fc99e962531d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:327:9\n  11:     0x5659909862d5 - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:833:13\n  12:     0x56599098606a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13\n  13:     0x565990984f19 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18\n  14:     0x565990985cfd - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5\n  15:     0x5659909a17d0 - core::panicking::panic_fmt::h62f63d096dd276af\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14\n  16:     0x56599083070a - clap::parse::matches::arg_matches::assert_utf8_validation::h318be762df5afd80\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x5659908304eb - clap::parse::matches::arg_matches::ArgMatches::value_of::ha6f1118cb8435cf9\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x56599082ca05 - headr::get_args::h0ca1efa85fed75cc\n                               at /opt/rustwide/workdir/src/lib.rs:88:10\n  19:     0x565990827092 - headr::main::hfc1f7496806ba185\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x565990826f5b - core::ops::function::FnOnce::call_once::h41c67ffa9bece5c2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5\n  21:     0x565990826f1e - std::sys::backtrace::__rust_begin_short_backtrace::hd1b2e539a93423c4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18\n  22:     0x565990826ef1 - std::rt::lang_start::{{closure}}::h5fc41add1257eed4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:206:18\n  23:     0x56599097ce30 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h638295a043b40957\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:290:21\n  24:     0x56599097ce30 - std::panicking::catch_unwind::do_call::hbd68098bdea1ca50\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  25:     0x56599097ce30 - std::panicking::catch_unwind::h50591d85bf847c7c\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  26:     0x56599097ce30 - std::panic::catch_unwind::h2487b4c4f2ae22c6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  27:     0x56599097ce30 - std::rt::lang_start_internal::{{closure}}::h61f0945cc6c9a811\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:175:24\n  28:     0x56599097ce30 - std::panicking::catch_unwind::do_call::h34b9c3722acd6bd1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  29:     0x56599097ce30 - std::panicking::catch_unwind::hf9a822ea043fb0d6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  30:     0x56599097ce30 - std::panic::catch_unwind::h5b3cac802237ed89\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  31:     0x56599097ce30 - std::rt::lang_start_internal::h34f9328d113fd60a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:171:5\n  32:     0x565990826ed7 - std::rt::lang_start::h91ff1c35a55b0f62\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:205:5\n  33:     0x56599082719e - main\n  34:     0x714ee701f1ca - <unknown>\n  35:     0x714ee701f28b - __libc_start_main\n  36:     0x565990826dd5 - _start\n  37:                0x0 - <unknown>\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55a144dc7022 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x55a144dc7022 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x55a144dc7022 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x55a144dc7022 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x55a144dedee3 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x55a144dedee3 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x55a144dc3863 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x55a144dc3863 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x55a144dc6e72 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x55a144dc8619 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x55a144dc844e - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x55a144d57884 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x55a144d57884 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x55a144dc8fee - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x55a144dc8fee - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x55a144dc8dba - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x55a144dc7519 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x55a144dc8a4d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x55a144dec660 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x55a144cd12c0 - core::panicking::panic_display::h4950e8879e139d5e
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:268:5
[INFO] [stdout]   20:     0x55a144cd8ca7 - assert_cmd::assert::AssertError::panic::hd1c6b8725e64e9e6
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:1036:9
[INFO] [stdout]   21:     0x55a144ccf497 - core::ops::function::FnOnce::call_once::h33db223bd372c788
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   22:     0x55a144cc6d34 - core::result::Result<T,E>::unwrap_or_else::hd9dcf70f82c93b13
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1525:23
[INFO] [stdout]   23:     0x55a144cd8316 - assert_cmd::assert::Assert::success::he376a2d69f406229
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:156:28
[INFO] [stdout]   24:     0x55a144cc54d1 - cli::run_read_file::h58a2f6d1562ee392
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:63:10
[INFO] [stdout]   25:     0x55a144cc5d5e - cli::test_empty::h8d4e08f7a76ef444
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:68:5
[INFO] [stdout]   26:     0x55a144cc5d27 - cli::test_empty::{{closure}}::he3b97d5963c2de20
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:67:16
[INFO] [stdout]   27:     0x55a144cc3016 - core::ops::function::FnOnce::call_once::h825610b41dd3744b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   28:     0x55a144d5d0eb - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   29:     0x55a144d5d0eb - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   30:     0x55a144d5c225 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   31:     0x55a144d5c225 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   32:     0x55a144d5c225 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   33:     0x55a144d5c225 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   34:     0x55a144d5c225 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x55a144d5c225 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   36:     0x55a144d5c225 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   37:     0x55a144d1fe24 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   38:     0x55a144d1fe24 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x55a144d237fa - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   40:     0x55a144d237fa - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   41:     0x55a144d237fa - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   42:     0x55a144d237fa - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   43:     0x55a144d237fa - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x55a144d237fa - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   45:     0x55a144d237fa - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   46:     0x55a144dcc08f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   47:     0x55a144dcc08f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   48:     0x74a36e694aa4 - <unknown>
[INFO] [stdout]   49:     0x74a36e721a34 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- read_lines stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'read_lines' panicked at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code-101
[INFO] [stdout] stderr=```"\nthread \'main\' panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x5b89caae5a12 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x5b89caae5a12 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x5b89caae5a12 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9\n   3:     0x5b89caae5a12 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26\n   4:     0x5b89cab03683 - core::fmt::rt::Argument::fmt::h2c56b3114963061a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76\n   5:     0x5b89cab03683 - core::fmt::write::h8a494366950f23bb\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25\n   6:     0x5b89caae2f83 - std::io::default_write_fmt::ha27fbccbc65eb6fa\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11\n   7:     0x5b89caae2f83 - std::io::Write::write_fmt::h6556609fca33d0b1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13\n   8:     0x5b89caae5862 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9\n   9:     0x5b89caae6903 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27\n  10:     0x5b89caae66e5 - std::panicking::default_hook::h2c66fc99e962531d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:327:9\n  11:     0x5b89caae72d5 - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:833:13\n  12:     0x5b89caae706a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13\n  13:     0x5b89caae5f19 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18\n  14:     0x5b89caae6cfd - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5\n  15:     0x5b89cab027d0 - core::panicking::panic_fmt::h62f63d096dd276af\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14\n  16:     0x5b89ca99170a - clap::parse::matches::arg_matches::assert_utf8_validation::h318be762df5afd80\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x5b89ca9914eb - clap::parse::matches::arg_matches::ArgMatches::value_of::ha6f1118cb8435cf9\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x5b89ca98da05 - headr::get_args::h0ca1efa85fed75cc\n                               at /opt/rustwide/workdir/src/lib.rs:88:10\n  19:     0x5b89ca988092 - headr::main::hfc1f7496806ba185\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x5b89ca987f5b - core::ops::function::FnOnce::call_once::h41c67ffa9bece5c2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5\n  21:     0x5b89ca987f1e - std::sys::backtrace::__rust_begin_short_backtrace::hd1b2e539a93423c4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18\n  22:     0x5b89ca987ef1 - std::rt::lang_start::{{closure}}::h5fc41add1257eed4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:206:18\n  23:     0x5b89caadde30 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h638295a043b40957\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:290:21\n  24:     0x5b89caadde30 - std::panicking::catch_unwind::do_call::hbd68098bdea1ca50\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  25:     0x5b89caadde30 - std::panicking::catch_unwind::h50591d85bf847c7c\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  26:     0x5b89caadde30 - std::panic::catch_unwind::h2487b4c4f2ae22c6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  27:     0x5b89caadde30 - std::rt::lang_start_internal::{{closure}}::h61f0945cc6c9a811\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:175:24\n  28:     0x5b89caadde30 - std::panicking::catch_unwind::do_call::h34b9c3722acd6bd1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  29:     0x5b89caadde30 - std::panicking::catch_unwind::hf9a822ea043fb0d6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  30:     0x5b89caadde30 - std::panic::catch_unwind::h5b3cac802237ed89\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  31:     0x5b89caadde30 - std::rt::lang_start_internal::h34f9328d113fd60a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:171:5\n  32:     0x5b89ca987ed7 - std::rt::lang_start::h91ff1c35a55b0f62\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:205:5\n  33:     0x5b89ca98819e - main\n  34:     0x718ab3bca1ca - <unknown>\n  35:     0x718ab3bca28b - __libc_start_main\n  36:     0x5b89ca987dd5 - _start\n  37:                0x0 - <unknown>\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/headr" "-n=3" "tests/inputs/ten.txt"`
[INFO] [stdout] code=101
[INFO] [stdout] stdout=""
[INFO] [stdout] stderr="\nthread \'main\' panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x5b89caae5a12 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x5b89caae5a12 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x5b89caae5a12 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9\n   3:     0x5b89caae5a12 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26\n   4:     0x5b89cab03683 - core::fmt::rt::Argument::fmt::h2c56b3114963061a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76\n   5:     0x5b89cab03683 - core::fmt::write::h8a494366950f23bb\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25\n   6:     0x5b89caae2f83 - std::io::default_write_fmt::ha27fbccbc65eb6fa\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11\n   7:     0x5b89caae2f83 - std::io::Write::write_fmt::h6556609fca33d0b1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13\n   8:     0x5b89caae5862 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9\n   9:     0x5b89caae6903 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27\n  10:     0x5b89caae66e5 - std::panicking::default_hook::h2c66fc99e962531d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:327:9\n  11:     0x5b89caae72d5 - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:833:13\n  12:     0x5b89caae706a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13\n  13:     0x5b89caae5f19 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18\n  14:     0x5b89caae6cfd - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5\n  15:     0x5b89cab027d0 - core::panicking::panic_fmt::h62f63d096dd276af\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14\n  16:     0x5b89ca99170a - clap::parse::matches::arg_matches::assert_utf8_validation::h318be762df5afd80\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x5b89ca9914eb - clap::parse::matches::arg_matches::ArgMatches::value_of::ha6f1118cb8435cf9\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x5b89ca98da05 - headr::get_args::h0ca1efa85fed75cc\n                               at /opt/rustwide/workdir/src/lib.rs:88:10\n  19:     0x5b89ca988092 - headr::main::hfc1f7496806ba185\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x5b89ca987f5b - core::ops::function::FnOnce::call_once::h41c67ffa9bece5c2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5\n  21:     0x5b89ca987f1e - std::sys::backtrace::__rust_begin_short_backtrace::hd1b2e539a93423c4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18\n  22:     0x5b89ca987ef1 - std::rt::lang_start::{{closure}}::h5fc41add1257eed4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:206:18\n  23:     0x5b89caadde30 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h638295a043b40957\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:290:21\n  24:     0x5b89caadde30 - std::panicking::catch_unwind::do_call::hbd68098bdea1ca50\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  25:     0x5b89caadde30 - std::panicking::catch_unwind::h50591d85bf847c7c\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  26:     0x5b89caadde30 - std::panic::catch_unwind::h2487b4c4f2ae22c6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  27:     0x5b89caadde30 - std::rt::lang_start_internal::{{closure}}::h61f0945cc6c9a811\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:175:24\n  28:     0x5b89caadde30 - std::panicking::catch_unwind::do_call::h34b9c3722acd6bd1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  29:     0x5b89caadde30 - std::panicking::catch_unwind::hf9a822ea043fb0d6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  30:     0x5b89caadde30 - std::panic::catch_unwind::h5b3cac802237ed89\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  31:     0x5b89caadde30 - std::rt::lang_start_internal::h34f9328d113fd60a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:171:5\n  32:     0x5b89ca987ed7 - std::rt::lang_start::h91ff1c35a55b0f62\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:205:5\n  33:     0x5b89ca98819e - main\n  34:     0x718ab3bca1ca - <unknown>\n  35:     0x718ab3bca28b - __libc_start_main\n  36:     0x5b89ca987dd5 - _start\n  37:                0x0 - <unknown>\n"
[INFO] [stderr] error: test failed, to rerun pass `--test cli`
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55a144dc7022 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x55a144dc7022 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x55a144dc7022 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x55a144dc7022 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x55a144dedee3 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x55a144dedee3 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x55a144dc3863 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x55a144dc3863 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x55a144dc6e72 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x55a144dc8619 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x55a144dc844e - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x55a144d57884 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x55a144d57884 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x55a144dc8fee - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x55a144dc8fee - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x55a144dc8dba - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x55a144dc7519 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x55a144dc8a4d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x55a144dec660 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x55a144cd12c0 - core::panicking::panic_display::h4950e8879e139d5e
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:268:5
[INFO] [stdout]   20:     0x55a144cd8ca7 - assert_cmd::assert::AssertError::panic::hd1c6b8725e64e9e6
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:1036:9
[INFO] [stdout]   21:     0x55a144ccf497 - core::ops::function::FnOnce::call_once::h33db223bd372c788
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   22:     0x55a144cc6d34 - core::result::Result<T,E>::unwrap_or_else::hd9dcf70f82c93b13
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1525:23
[INFO] [stdout]   23:     0x55a144cd8316 - assert_cmd::assert::Assert::success::he376a2d69f406229
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:156:28
[INFO] [stdout]   24:     0x55a144cc54d1 - cli::run_read_file::h58a2f6d1562ee392
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:63:10
[INFO] [stdout]   25:     0x55a144cc5e1e - cli::read_lines::h9c5107121301ebd4
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:86:5
[INFO] [stdout]   26:     0x55a144cc5de7 - cli::read_lines::{{closure}}::h6e6db6425cff8ca1
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:85:16
[INFO] [stdout]   27:     0x55a144cc3126 - core::ops::function::FnOnce::call_once::hc6eddc4f851f40fc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   28:     0x55a144d5d0eb - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   29:     0x55a144d5d0eb - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   30:     0x55a144d5c225 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   31:     0x55a144d5c225 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   32:     0x55a144d5c225 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   33:     0x55a144d5c225 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   34:     0x55a144d5c225 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x55a144d5c225 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   36:     0x55a144d5c225 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   37:     0x55a144d1fe24 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   38:     0x55a144d1fe24 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x55a144d237fa - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   40:     0x55a144d237fa - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   41:     0x55a144d237fa - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   42:     0x55a144d237fa - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   43:     0x55a144d237fa - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x55a144d237fa - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   45:     0x55a144d237fa - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   46:     0x55a144dcc08f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   47:     0x55a144dcc08f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   48:     0x74a36e694aa4 - <unknown>
[INFO] [stdout]   49:     0x74a36e721a34 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- test_bytes stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test_bytes' panicked at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code-101
[INFO] [stdout] stderr=```"\nthread \'main\' panicked at src/lib.rs:95:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `bytes`\nstack backtrace:\n   0:     0x615b0abaea12 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x615b0abaea12 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x615b0abaea12 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9\n   3:     0x615b0abaea12 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26\n   4:     0x615b0abcc683 - core::fmt::rt::Argument::fmt::h2c56b3114963061a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76\n   5:     0x615b0abcc683 - core::fmt::write::h8a494366950f23bb\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25\n   6:     0x615b0ababf83 - std::io::default_write_fmt::ha27fbccbc65eb6fa\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11\n   7:     0x615b0ababf83 - std::io::Write::write_fmt::h6556609fca33d0b1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13\n   8:     0x615b0abae862 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9\n   9:     0x615b0abaf903 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27\n  10:     0x615b0abaf6e5 - std::panicking::default_hook::h2c66fc99e962531d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:327:9\n  11:     0x615b0abb02d5 - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:833:13\n  12:     0x615b0abb006a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13\n  13:     0x615b0abaef19 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18\n  14:     0x615b0abafcfd - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5\n  15:     0x615b0abcb7d0 - core::panicking::panic_fmt::h62f63d096dd276af\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14\n  16:     0x615b0aa5a70a - clap::parse::matches::arg_matches::assert_utf8_validation::h318be762df5afd80\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x615b0aa5a4eb - clap::parse::matches::arg_matches::ArgMatches::value_of::ha6f1118cb8435cf9\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x615b0aa56c26 - headr::get_args::h0ca1efa85fed75cc\n                               at /opt/rustwide/workdir/src/lib.rs:95:10\n  19:     0x615b0aa51092 - headr::main::hfc1f7496806ba185\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x615b0aa50f5b - core::ops::function::FnOnce::call_once::h41c67ffa9bece5c2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5\n  21:     0x615b0aa50f1e - std::sys::backtrace::__rust_begin_short_backtrace::hd1b2e539a93423c4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18\n  22:     0x615b0aa50ef1 - std::rt::lang_start::{{closure}}::h5fc41add1257eed4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:206:18\n  23:     0x615b0aba6e30 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h638295a043b40957\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:290:21\n  24:     0x615b0aba6e30 - std::panicking::catch_unwind::do_call::hbd68098bdea1ca50\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  25:     0x615b0aba6e30 - std::panicking::catch_unwind::h50591d85bf847c7c\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  26:     0x615b0aba6e30 - std::panic::catch_unwind::h2487b4c4f2ae22c6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  27:     0x615b0aba6e30 - std::rt::lang_start_internal::{{closure}}::h61f0945cc6c9a811\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:175:24\n  28:     0x615b0aba6e30 - std::panicking::catch_unwind::do_call::h34b9c3722acd6bd1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  29:     0x615b0aba6e30 - std::panicking::catch_unwind::hf9a822ea043fb0d6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  30:     0x615b0aba6e30 - std::panic::catch_unwind::h5b3cac802237ed89\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  31:     0x615b0aba6e30 - std::rt::lang_start_internal::h34f9328d113fd60a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:171:5\n  32:     0x615b0aa50ed7 - std::rt::lang_start::h91ff1c35a55b0f62\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:205:5\n  33:     0x615b0aa5119e - main\n  34:     0x798a92b3a1ca - <unknown>\n  35:     0x798a92b3a28b - __libc_start_main\n  36:     0x615b0aa50dd5 - _start\n  37:                0x0 - <unknown>\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/headr" "-c=3" "tests/inputs/unicodes.txt"`
[INFO] [stdout] code=101
[INFO] [stdout] stdout=""
[INFO] [stdout] stderr="\nthread \'main\' panicked at src/lib.rs:95:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `bytes`\nstack backtrace:\n   0:     0x615b0abaea12 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x615b0abaea12 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x615b0abaea12 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9\n   3:     0x615b0abaea12 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26\n   4:     0x615b0abcc683 - core::fmt::rt::Argument::fmt::h2c56b3114963061a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76\n   5:     0x615b0abcc683 - core::fmt::write::h8a494366950f23bb\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25\n   6:     0x615b0ababf83 - std::io::default_write_fmt::ha27fbccbc65eb6fa\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11\n   7:     0x615b0ababf83 - std::io::Write::write_fmt::h6556609fca33d0b1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13\n   8:     0x615b0abae862 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9\n   9:     0x615b0abaf903 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27\n  10:     0x615b0abaf6e5 - std::panicking::default_hook::h2c66fc99e962531d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:327:9\n  11:     0x615b0abb02d5 - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:833:13\n  12:     0x615b0abb006a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13\n  13:     0x615b0abaef19 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18\n  14:     0x615b0abafcfd - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5\n  15:     0x615b0abcb7d0 - core::panicking::panic_fmt::h62f63d096dd276af\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14\n  16:     0x615b0aa5a70a - clap::parse::matches::arg_matches::assert_utf8_validation::h318be762df5afd80\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x615b0aa5a4eb - clap::parse::matches::arg_matches::ArgMatches::value_of::ha6f1118cb8435cf9\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x615b0aa56c26 - headr::get_args::h0ca1efa85fed75cc\n                               at /opt/rustwide/workdir/src/lib.rs:95:10\n  19:     0x615b0aa51092 - headr::main::hfc1f7496806ba185\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x615b0aa50f5b - core::ops::function::FnOnce::call_once::h41c67ffa9bece5c2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5\n  21:     0x615b0aa50f1e - std::sys::backtrace::__rust_begin_short_backtrace::hd1b2e539a93423c4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18\n  22:     0x615b0aa50ef1 - std::rt::lang_start::{{closure}}::h5fc41add1257eed4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:206:18\n  23:     0x615b0aba6e30 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h638295a043b40957\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:290:21\n  24:     0x615b0aba6e30 - std::panicking::catch_unwind::do_call::hbd68098bdea1ca50\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  25:     0x615b0aba6e30 - std::panicking::catch_unwind::h50591d85bf847c7c\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  26:     0x615b0aba6e30 - std::panic::catch_unwind::h2487b4c4f2ae22c6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  27:     0x615b0aba6e30 - std::rt::lang_start_internal::{{closure}}::h61f0945cc6c9a811\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:175:24\n  28:     0x615b0aba6e30 - std::panicking::catch_unwind::do_call::h34b9c3722acd6bd1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  29:     0x615b0aba6e30 - std::panicking::catch_unwind::hf9a822ea043fb0d6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  30:     0x615b0aba6e30 - std::panic::catch_unwind::h5b3cac802237ed89\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  31:     0x615b0aba6e30 - std::rt::lang_start_internal::h34f9328d113fd60a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:171:5\n  32:     0x615b0aa50ed7 - std::rt::lang_start::h91ff1c35a55b0f62\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:205:5\n  33:     0x615b0aa5119e - main\n  34:     0x798a92b3a1ca - <unknown>\n  35:     0x798a92b3a28b - __libc_start_main\n  36:     0x615b0aa50dd5 - _start\n  37:                0x0 - <unknown>\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55a144dc7022 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x55a144dc7022 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x55a144dc7022 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x55a144dc7022 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x55a144dedee3 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x55a144dedee3 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x55a144dc3863 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x55a144dc3863 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x55a144dc6e72 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x55a144dc8619 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x55a144dc844e - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x55a144d57884 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x55a144d57884 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x55a144dc8fee - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x55a144dc8fee - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x55a144dc8dba - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x55a144dc7519 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x55a144dc8a4d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x55a144dec660 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x55a144cd12c0 - core::panicking::panic_display::h4950e8879e139d5e
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:268:5
[INFO] [stdout]   20:     0x55a144cd8ca7 - assert_cmd::assert::AssertError::panic::hd1c6b8725e64e9e6
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:1036:9
[INFO] [stdout]   21:     0x55a144ccf497 - core::ops::function::FnOnce::call_once::h33db223bd372c788
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   22:     0x55a144cc6d34 - core::result::Result<T,E>::unwrap_or_else::hd9dcf70f82c93b13
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1525:23
[INFO] [stdout]   23:     0x55a144cd8316 - assert_cmd::assert::Assert::success::he376a2d69f406229
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:156:28
[INFO] [stdout]   24:     0x55a144cc54d1 - cli::run_read_file::h58a2f6d1562ee392
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:63:10
[INFO] [stdout]   25:     0x55a144cc5fbe - cli::test_bytes::h7b667e722bdb2d3a
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:132:5
[INFO] [stdout]   26:     0x55a144cc5f87 - cli::test_bytes::{{closure}}::h591824c868ded8f2
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:131:16
[INFO] [stdout]   27:     0x55a144cc3056 - core::ops::function::FnOnce::call_once::h8f15b1b72a60046b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   28:     0x55a144d5d0eb - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   29:     0x55a144d5d0eb - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   30:     0x55a144d5c225 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   31:     0x55a144d5c225 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   32:     0x55a144d5c225 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   33:     0x55a144d5c225 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   34:     0x55a144d5c225 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x55a144d5c225 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   36:     0x55a144d5c225 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   37:     0x55a144d1fe24 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   38:     0x55a144d1fe24 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x55a144d237fa - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   40:     0x55a144d237fa - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   41:     0x55a144d237fa - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   42:     0x55a144d237fa - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   43:     0x55a144d237fa - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x55a144d237fa - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   45:     0x55a144d237fa - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   46:     0x55a144dcc08f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   47:     0x55a144dcc08f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   48:     0x74a36e694aa4 - <unknown>
[INFO] [stdout]   49:     0x74a36e721a34 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- read_lines_from_files stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'read_lines_from_files' panicked at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code-101
[INFO] [stdout] stderr=```"\nthread \'main\' panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x65076f52fa12 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x65076f52fa12 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x65076f52fa12 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9\n   3:     0x65076f52fa12 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26\n   4:     0x65076f54d683 - core::fmt::rt::Argument::fmt::h2c56b3114963061a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76\n   5:     0x65076f54d683 - core::fmt::write::h8a494366950f23bb\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25\n   6:     0x65076f52cf83 - std::io::default_write_fmt::ha27fbccbc65eb6fa\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11\n   7:     0x65076f52cf83 - std::io::Write::write_fmt::h6556609fca33d0b1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13\n   8:     0x65076f52f862 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9\n   9:     0x65076f530903 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27\n  10:     0x65076f5306e5 - std::panicking::default_hook::h2c66fc99e962531d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:327:9\n  11:     0x65076f5312d5 - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:833:13\n  12:     0x65076f53106a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13\n  13:     0x65076f52ff19 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18\n  14:     0x65076f530cfd - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5\n  15:     0x65076f54c7d0 - core::panicking::panic_fmt::h62f63d096dd276af\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14\n  16:     0x65076f3db70a - clap::parse::matches::arg_matches::assert_utf8_validation::h318be762df5afd80\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x65076f3db4eb - clap::parse::matches::arg_matches::ArgMatches::value_of::ha6f1118cb8435cf9\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x65076f3d7a05 - headr::get_args::h0ca1efa85fed75cc\n                               at /opt/rustwide/workdir/src/lib.rs:88:10\n  19:     0x65076f3d2092 - headr::main::hfc1f7496806ba185\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x65076f3d1f5b - core::ops::function::FnOnce::call_once::h41c67ffa9bece5c2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5\n  21:     0x65076f3d1f1e - std::sys::backtrace::__rust_begin_short_backtrace::hd1b2e539a93423c4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18\n  22:     0x65076f3d1ef1 - std::rt::lang_start::{{closure}}::h5fc41add1257eed4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:206:18\n  23:     0x65076f527e30 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h638295a043b40957\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:290:21\n  24:     0x65076f527e30 - std::panicking::catch_unwind::do_call::hbd68098bdea1ca50\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  25:     0x65076f527e30 - std::panicking::catch_unwind::h50591d85bf847c7c\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  26:     0x65076f527e30 - std::panic::catch_unwind::h2487b4c4f2ae22c6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  27:     0x65076f527e30 - std::rt::lang_start_internal::{{closure}}::h61f0945cc6c9a811\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:175:24\n  28:     0x65076f527e30 - std::panicking::catch_unwind::do_call::h34b9c3722acd6bd1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  29:     0x65076f527e30 - std::panicking::catch_unwind::hf9a822ea043fb0d6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  30:     0x65076f527e30 - std::panic::catch_unwind::h5b3cac802237ed89\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  31:     0x65076f527e30 - std::rt::lang_start_internal::h34f9328d113fd60a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:171:5\n  32:     0x65076f3d1ed7 - std::rt::lang_start::h91ff1c35a55b0f62\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:205:5\n  33:     0x65076f3d219e - main\n  34:     0x7cc2f3e281ca - <unknown>\n  35:     0x7cc2f3e2828b - __libc_start_main\n  36:     0x65076f3d1dd5 - _start\n  37:                0x0 - <unknown>\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/headr" "-n=2" "tests/inputs/three-lines.txt"`
[INFO] [stdout] code=101
[INFO] [stdout] stdout=""
[INFO] [stdout] stderr="\nthread \'main\' panicked at src/lib.rs:88:10:\nMust use `_os` lookups with `Arg::allow_invalid_utf8` at `lines`\nstack backtrace:\n   0:     0x65076f52fa12 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9\n   1:     0x65076f52fa12 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14\n   2:     0x65076f52fa12 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9\n   3:     0x65076f52fa12 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26\n   4:     0x65076f54d683 - core::fmt::rt::Argument::fmt::h2c56b3114963061a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76\n   5:     0x65076f54d683 - core::fmt::write::h8a494366950f23bb\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25\n   6:     0x65076f52cf83 - std::io::default_write_fmt::ha27fbccbc65eb6fa\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11\n   7:     0x65076f52cf83 - std::io::Write::write_fmt::h6556609fca33d0b1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13\n   8:     0x65076f52f862 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9\n   9:     0x65076f530903 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27\n  10:     0x65076f5306e5 - std::panicking::default_hook::h2c66fc99e962531d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:327:9\n  11:     0x65076f5312d5 - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:833:13\n  12:     0x65076f53106a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13\n  13:     0x65076f52ff19 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18\n  14:     0x65076f530cfd - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5\n  15:     0x65076f54c7d0 - core::panicking::panic_fmt::h62f63d096dd276af\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14\n  16:     0x65076f3db70a - clap::parse::matches::arg_matches::assert_utf8_validation::h318be762df5afd80\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:1408:5\n  17:     0x65076f3db4eb - clap::parse::matches::arg_matches::ArgMatches::value_of::ha6f1118cb8435cf9\n                               at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/clap-3.1.12/src/parse/matches/arg_matches.rs:145:9\n  18:     0x65076f3d7a05 - headr::get_args::h0ca1efa85fed75cc\n                               at /opt/rustwide/workdir/src/lib.rs:88:10\n  19:     0x65076f3d2092 - headr::main::hfc1f7496806ba185\n                               at /opt/rustwide/workdir/src/main.rs:2:21\n  20:     0x65076f3d1f5b - core::ops::function::FnOnce::call_once::h41c67ffa9bece5c2\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5\n  21:     0x65076f3d1f1e - std::sys::backtrace::__rust_begin_short_backtrace::hd1b2e539a93423c4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18\n  22:     0x65076f3d1ef1 - std::rt::lang_start::{{closure}}::h5fc41add1257eed4\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:206:18\n  23:     0x65076f527e30 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h638295a043b40957\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:290:21\n  24:     0x65076f527e30 - std::panicking::catch_unwind::do_call::hbd68098bdea1ca50\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  25:     0x65076f527e30 - std::panicking::catch_unwind::h50591d85bf847c7c\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  26:     0x65076f527e30 - std::panic::catch_unwind::h2487b4c4f2ae22c6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  27:     0x65076f527e30 - std::rt::lang_start_internal::{{closure}}::h61f0945cc6c9a811\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:175:24\n  28:     0x65076f527e30 - std::panicking::catch_unwind::do_call::h34b9c3722acd6bd1\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40\n  29:     0x65076f527e30 - std::panicking::catch_unwind::hf9a822ea043fb0d6\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19\n  30:     0x65076f527e30 - std::panic::catch_unwind::h5b3cac802237ed89\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14\n  31:     0x65076f527e30 - std::rt::lang_start_internal::h34f9328d113fd60a\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:171:5\n  32:     0x65076f3d1ed7 - std::rt::lang_start::h91ff1c35a55b0f62\n                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:205:5\n  33:     0x65076f3d219e - main\n  34:     0x7cc2f3e281ca - <unknown>\n  35:     0x7cc2f3e2828b - __libc_start_main\n  36:     0x65076f3d1dd5 - _start\n  37:                0x0 - <unknown>\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55a144dc7022 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x55a144dc7022 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x55a144dc7022 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x55a144dc7022 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x55a144dedee3 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x55a144dedee3 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x55a144dc3863 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x55a144dc3863 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x55a144dc6e72 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x55a144dc8619 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x55a144dc844e - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x55a144d57884 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x55a144d57884 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x55a144dc8fee - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x55a144dc8fee - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x55a144dc8dba - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x55a144dc7519 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x55a144dc8a4d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x55a144dec660 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x55a144cd12c0 - core::panicking::panic_display::h4950e8879e139d5e
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:268:5
[INFO] [stdout]   20:     0x55a144cd8ca7 - assert_cmd::assert::AssertError::panic::hd1c6b8725e64e9e6
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:1036:9
[INFO] [stdout]   21:     0x55a144ccf497 - core::ops::function::FnOnce::call_once::h33db223bd372c788
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   22:     0x55a144cc6d34 - core::result::Result<T,E>::unwrap_or_else::hd9dcf70f82c93b13
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1525:23
[INFO] [stdout]   23:     0x55a144cd8316 - assert_cmd::assert::Assert::success::he376a2d69f406229
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.4/src/assert.rs:156:28
[INFO] [stdout]   24:     0x55a144cc54d1 - cli::run_read_file::h58a2f6d1562ee392
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:63:10
[INFO] [stdout]   25:     0x55a144cc5dcb - cli::read_lines_from_files::h4c08e1d857f37dc7
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:79:5
[INFO] [stdout]   26:     0x55a144cc5d77 - cli::read_lines_from_files::{{closure}}::h6066141fc6b410c4
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/cli.rs:74:27
[INFO] [stdout]   27:     0x55a144cc2fd6 - core::ops::function::FnOnce::call_once::h62daf25d7b901e34
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   28:     0x55a144d5d0eb - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   29:     0x55a144d5d0eb - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   30:     0x55a144d5c225 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   31:     0x55a144d5c225 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   32:     0x55a144d5c225 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   33:     0x55a144d5c225 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   34:     0x55a144d5c225 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x55a144d5c225 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   36:     0x55a144d5c225 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   37:     0x55a144d1fe24 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   38:     0x55a144d1fe24 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x55a144d237fa - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   40:     0x55a144d237fa - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   41:     0x55a144d237fa - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   42:     0x55a144d237fa - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   43:     0x55a144d237fa - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x55a144d237fa - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   45:     0x55a144d237fa - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   46:     0x55a144dcc08f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   47:     0x55a144dcc08f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   48:     0x74a36e694aa4 - <unknown>
[INFO] [stdout]   49:     0x74a36e721a34 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     read_lines
[INFO] [stdout]     read_lines_from_files
[INFO] [stdout]     test_bytes
[INFO] [stdout]     test_empty
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 4 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "de7d92e14464c45966ae7ff2db26dd14c9a2cf2e7ef0388cd1e70d736d94f946", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de7d92e14464c45966ae7ff2db26dd14c9a2cf2e7ef0388cd1e70d736d94f946", kill_on_drop: false }`
[INFO] [stdout] de7d92e14464c45966ae7ff2db26dd14c9a2cf2e7ef0388cd1e70d736d94f946
