[INFO] cloning repository https://github.com/ryo0705s/rust-lesson
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryo0705s/rust-lesson" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryo0705s%2Frust-lesson", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryo0705s%2Frust-lesson'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9a789eaccaebc1747aaf67244136c9047ccd71fb
[INFO] checking ryo0705s/rust-lesson against try#ddcf048784667508cd676fef4667f88ae15628a3 for pr-148271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryo0705s%2Frust-lesson" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ryo0705s/rust-lesson
[INFO] finished tweaking git repo https://github.com/ryo0705s/rust-lesson
[INFO] tweaked toml for git repo https://github.com/ryo0705s/rust-lesson written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ryo0705s/rust-lesson on toolchain ddcf048784667508cd676fef4667f88ae15628a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ryo0705s/rust-lesson 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" "+ddcf048784667508cd676fef4667f88ae15628a3" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52f11f561967e2557fc243911d9b4905180385ca6281d435a398ef7e17895e06
[INFO] running `Command { std: "docker" "start" "-a" "52f11f561967e2557fc243911d9b4905180385ca6281d435a398ef7e17895e06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52f11f561967e2557fc243911d9b4905180385ca6281d435a398ef7e17895e06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52f11f561967e2557fc243911d9b4905180385ca6281d435a398ef7e17895e06", kill_on_drop: false }`
[INFO] [stdout] 52f11f561967e2557fc243911d9b4905180385ca6281d435a398ef7e17895e06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ade940130102d8b02446f37680b87f2ab58188d10d72c9e73b2c7e60eb9466c
[INFO] running `Command { std: "docker" "start" "-a" "5ade940130102d8b02446f37680b87f2ab58188d10d72c9e73b2c7e60eb9466c", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-lesson v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `func_a` is never used
[INFO] [stdout]  --> src/verse/sub_a.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn func_a() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `func_b` is never used
[INFO] [stdout]  --> src/verse/sub_b.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn func_b() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `func_a` is never used
[INFO] [stdout]  --> src/verse/sub_a.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn func_a() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `func_b` is never used
[INFO] [stdout]  --> src/verse/sub_b.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn func_b() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "5ade940130102d8b02446f37680b87f2ab58188d10d72c9e73b2c7e60eb9466c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ade940130102d8b02446f37680b87f2ab58188d10d72c9e73b2c7e60eb9466c", kill_on_drop: false }`
[INFO] [stdout] 5ade940130102d8b02446f37680b87f2ab58188d10d72c9e73b2c7e60eb9466c