[INFO] cloning repository https://github.com/violetdivine/supplement_p2_6
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/violetdivine/supplement_p2_6" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvioletdivine%2Fsupplement_p2_6", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvioletdivine%2Fsupplement_p2_6'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 947cbfade2673262a1d4d7f8c78202739c7f20a8
[INFO] testing violetdivine/supplement_p2_6 against master#f9988fefd3add01f414f52b414308e7872622fee for pr-155114
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvioletdivine%2Fsupplement_p2_6" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/violetdivine/supplement_p2_6
[INFO] finished tweaking git repo https://github.com/violetdivine/supplement_p2_6
[INFO] tweaked toml for git repo https://github.com/violetdivine/supplement_p2_6 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/violetdivine/supplement_p2_6 on toolchain f9988fefd3add01f414f52b414308e7872622fee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/violetdivine/supplement_p2_6 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" "+f9988fefd3add01f414f52b414308e7872622fee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b9a9c22d974a8486fc45f424f736a8126b01f2326f983ab25b06575e714092f
[INFO] running `Command { std: "docker" "start" "-a" "1b9a9c22d974a8486fc45f424f736a8126b01f2326f983ab25b06575e714092f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b9a9c22d974a8486fc45f424f736a8126b01f2326f983ab25b06575e714092f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b9a9c22d974a8486fc45f424f736a8126b01f2326f983ab25b06575e714092f", kill_on_drop: false }`
[INFO] [stdout] 1b9a9c22d974a8486fc45f424f736a8126b01f2326f983ab25b06575e714092f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7fbbc525644f99c82dcda3e2b5e0a5c5b0bcde6804d984046b259080dc7977d
[INFO] running `Command { std: "docker" "start" "-a" "b7fbbc525644f99c82dcda3e2b5e0a5c5b0bcde6804d984046b259080dc7977d", kill_on_drop: false }`
[INFO] [stderr]    Compiling supplement_p2_6 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `is_palindrome`, `most_common_char`, and `reverse_string`
[INFO] [stdout]  --> src/test.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{is_palindrome, reverse_string, most_common_char};
[INFO] [stdout]   |             ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | mod test;
[INFO] [stdout]   | ^^^^^^^^^
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/lib2.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn main(){
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "b7fbbc525644f99c82dcda3e2b5e0a5c5b0bcde6804d984046b259080dc7977d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7fbbc525644f99c82dcda3e2b5e0a5c5b0bcde6804d984046b259080dc7977d", kill_on_drop: false }`
[INFO] [stdout] b7fbbc525644f99c82dcda3e2b5e0a5c5b0bcde6804d984046b259080dc7977d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e79bb511a717b3c0bb78cd171cd6ed53b202de2b59fe3089f9ecd6154cf9418
[INFO] running `Command { std: "docker" "start" "-a" "9e79bb511a717b3c0bb78cd171cd6ed53b202de2b59fe3089f9ecd6154cf9418", kill_on_drop: false }`
[INFO] [stdout] warning: unused imports: `is_palindrome`, `most_common_char`, and `reverse_string`
[INFO] [stdout]  --> src/test.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{is_palindrome, reverse_string, most_common_char};
[INFO] [stdout]   |             ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | mod test;
[INFO] [stdout]   | ^^^^^^^^^
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/lib2.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn main(){
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling supplement_p2_6 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/lib2.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn main(){
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "9e79bb511a717b3c0bb78cd171cd6ed53b202de2b59fe3089f9ecd6154cf9418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e79bb511a717b3c0bb78cd171cd6ed53b202de2b59fe3089f9ecd6154cf9418", kill_on_drop: false }`
[INFO] [stdout] 9e79bb511a717b3c0bb78cd171cd6ed53b202de2b59fe3089f9ecd6154cf9418
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 19c9b8927767897ee7ec4911652dcb8b657fa5d2b92f087208e6e35c72b28105
[INFO] running `Command { std: "docker" "start" "-a" "19c9b8927767897ee7ec4911652dcb8b657fa5d2b92f087208e6e35c72b28105", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `is_palindrome`, `most_common_char`, and `reverse_string`
[INFO] [stderr]  --> src/test.rs:1:13
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::{is_palindrome, reverse_string, most_common_char};
[INFO] [stderr]   |             ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | mod test;
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]  --> src/lib2.rs:6:4
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn main(){
[INFO] [stderr]   |    ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `supplement_p2_6` (lib) generated 2 warnings (run `cargo fix --lib -p supplement_p2_6` to apply 1 suggestion)
[INFO] [stderr] warning: `supplement_p2_6` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/supplement_p2_6-00787abeb7d4ff78)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::should_test_if_string_is_a_palindrome ... ok
[INFO] [stdout] test test::should_test_most_used_character ... ok
[INFO] [stdout] test test::should_test_reversing_a_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests supplement_p2_6
[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] running `Command { std: "docker" "inspect" "19c9b8927767897ee7ec4911652dcb8b657fa5d2b92f087208e6e35c72b28105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19c9b8927767897ee7ec4911652dcb8b657fa5d2b92f087208e6e35c72b28105", kill_on_drop: false }`
[INFO] [stdout] 19c9b8927767897ee7ec4911652dcb8b657fa5d2b92f087208e6e35c72b28105
