[INFO] cloning repository https://github.com/ajibadeabd/rust_tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ajibadeabd/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajibadeabd%2Frust_tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajibadeabd%2Frust_tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d6fb4be02c1b4b1133fcc71aa5506679f184d1c
[INFO] checking ajibadeabd/rust_tutorial/1d6fb4be02c1b4b1133fcc71aa5506679f184d1c against master#5fe0e40e05f2d0408c6a292b160f96d595aedfbc for pr-130367
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajibadeabd%2Frust_tutorial" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ajibadeabd/rust_tutorial on toolchain 5fe0e40e05f2d0408c6a292b160f96d595aedfbc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5fe0e40e05f2d0408c6a292b160f96d595aedfbc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ajibadeabd/rust_tutorial
[INFO] finished tweaking git repo https://github.com/ajibadeabd/rust_tutorial
[INFO] tweaked toml for git repo https://github.com/ajibadeabd/rust_tutorial written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ajibadeabd/rust_tutorial 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" "+5fe0e40e05f2d0408c6a292b160f96d595aedfbc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+5fe0e40e05f2d0408c6a292b160f96d595aedfbc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75da15e4459b1c94cf1ca88ad35f45329e817298789d7ecbfc49e0faa25692ee
[INFO] running `Command { std: "docker" "start" "-a" "75da15e4459b1c94cf1ca88ad35f45329e817298789d7ecbfc49e0faa25692ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75da15e4459b1c94cf1ca88ad35f45329e817298789d7ecbfc49e0faa25692ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75da15e4459b1c94cf1ca88ad35f45329e817298789d7ecbfc49e0faa25692ee", kill_on_drop: false }`
[INFO] [stdout] 75da15e4459b1c94cf1ca88ad35f45329e817298789d7ecbfc49e0faa25692ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+5fe0e40e05f2d0408c6a292b160f96d595aedfbc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86c1ebc8112891b323b7d5561895805af48f4a5abec4920700c4adec0cbcfa3e
[INFO] running `Command { std: "docker" "start" "-a" "86c1ebc8112891b323b7d5561895805af48f4a5abec4920700c4adec0cbcfa3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking flate2 v1.0.26
[INFO] [stderr]     Checking file_compressor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `fs` and `io`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fs,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     io,
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fs` and `io`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fs,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     io,
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "86c1ebc8112891b323b7d5561895805af48f4a5abec4920700c4adec0cbcfa3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86c1ebc8112891b323b7d5561895805af48f4a5abec4920700c4adec0cbcfa3e", kill_on_drop: false }`
[INFO] [stdout] 86c1ebc8112891b323b7d5561895805af48f4a5abec4920700c4adec0cbcfa3e