[INFO] cloning repository https://github.com/juneym/rust-lang-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/juneym/rust-lang-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuneym%2Frust-lang-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuneym%2Frust-lang-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 367fb83c2c265d0b9b98d377081da64cd24e8615
[INFO] testing juneym/rust-lang-tutorial against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuneym%2Frust-lang-tutorial" "/workspace/builds/worker-118/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-118/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/juneym/rust-lang-tutorial on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/juneym/rust-lang-tutorial
[INFO] finished tweaking git repo https://github.com/juneym/rust-lang-tutorial
[INFO] tweaked toml for git repo https://github.com/juneym/rust-lang-tutorial written to /workspace/builds/worker-118/source/Cargo.toml
[INFO] crate git repo https://github.com/juneym/rust-lang-tutorial already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bcbeb54c414eed041201b0bfaa51d2b791ee65bbe470a3463c1f04e84ba5ea3
[INFO] running `Command { std: "docker" "start" "-a" "4bcbeb54c414eed041201b0bfaa51d2b791ee65bbe470a3463c1f04e84ba5ea3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bcbeb54c414eed041201b0bfaa51d2b791ee65bbe470a3463c1f04e84ba5ea3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bcbeb54c414eed041201b0bfaa51d2b791ee65bbe470a3463c1f04e84ba5ea3", kill_on_drop: false }`
[INFO] [stdout] 4bcbeb54c414eed041201b0bfaa51d2b791ee65bbe470a3463c1f04e84ba5ea3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce3a070fcde72c5f26a75a2daddd4fb35e091ad20b7e155c3c29b4f6c1da7473
[INFO] running `Command { std: "docker" "start" "-a" "ce3a070fcde72c5f26a75a2daddd4fb35e091ad20b7e155c3c29b4f6c1da7473", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-lang-tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/structs.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut c = Color {
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "ce3a070fcde72c5f26a75a2daddd4fb35e091ad20b7e155c3c29b4f6c1da7473", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce3a070fcde72c5f26a75a2daddd4fb35e091ad20b7e155c3c29b4f6c1da7473", kill_on_drop: false }`
[INFO] [stdout] ce3a070fcde72c5f26a75a2daddd4fb35e091ad20b7e155c3c29b4f6c1da7473
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07a2749b15f29bdc4c485daf211b25fe434f2ba7946c118c1e7adc093f2c7897
[INFO] running `Command { std: "docker" "start" "-a" "07a2749b15f29bdc4c485daf211b25fe434f2ba7946c118c1e7adc093f2c7897", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-lang-tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/structs.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut c = Color {
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "07a2749b15f29bdc4c485daf211b25fe434f2ba7946c118c1e7adc093f2c7897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07a2749b15f29bdc4c485daf211b25fe434f2ba7946c118c1e7adc093f2c7897", kill_on_drop: false }`
[INFO] [stdout] 07a2749b15f29bdc4c485daf211b25fe434f2ba7946c118c1e7adc093f2c7897
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cfced908b51f29984a2f645810df9b6f7e4833550f51336e8c8445c6074ff031
[INFO] running `Command { std: "docker" "start" "-a" "cfced908b51f29984a2f645810df9b6f7e4833550f51336e8c8445c6074ff031", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/structs.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let mut c = Color {
[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: `rust-lang-tutorial` (bin "rust-lang-tutorial" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_lang_tutorial-6e5ef6b578313d64)
[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" "cfced908b51f29984a2f645810df9b6f7e4833550f51336e8c8445c6074ff031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfced908b51f29984a2f645810df9b6f7e4833550f51336e8c8445c6074ff031", kill_on_drop: false }`
[INFO] [stdout] cfced908b51f29984a2f645810df9b6f7e4833550f51336e8c8445c6074ff031