[INFO] cloning repository https://github.com/maksimil/matgrap
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maksimil/matgrap" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaksimil%2Fmatgrap", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaksimil%2Fmatgrap'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b6d131d6aa6db27cf3aad3df24d017bc0f7c2fa
[INFO] checking maksimil/matgrap against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaksimil%2Fmatgrap" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/maksimil/matgrap
[INFO] finished tweaking git repo https://github.com/maksimil/matgrap
[INFO] tweaked toml for git repo https://github.com/maksimil/matgrap written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/maksimil/matgrap on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/maksimil/matgrap 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43ddba8951bf9d63cb3a969878dac3f8b3f56757b5b4bad612496ffb8529bb0c
[INFO] running `Command { std: "docker" "start" "-a" "43ddba8951bf9d63cb3a969878dac3f8b3f56757b5b4bad612496ffb8529bb0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43ddba8951bf9d63cb3a969878dac3f8b3f56757b5b4bad612496ffb8529bb0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43ddba8951bf9d63cb3a969878dac3f8b3f56757b5b4bad612496ffb8529bb0c", kill_on_drop: false }`
[INFO] [stdout] 43ddba8951bf9d63cb3a969878dac3f8b3f56757b5b4bad612496ffb8529bb0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b2e699438820cd9c712aae59df8979605005ccb558563fee2452039359ff48e
[INFO] running `Command { std: "docker" "start" "-a" "0b2e699438820cd9c712aae59df8979605005ccb558563fee2452039359ff48e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking matgrap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let args: Vec<String> = env::args().collect();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let args: Vec<String> = env::args().collect();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "0b2e699438820cd9c712aae59df8979605005ccb558563fee2452039359ff48e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b2e699438820cd9c712aae59df8979605005ccb558563fee2452039359ff48e", kill_on_drop: false }`
[INFO] [stdout] 0b2e699438820cd9c712aae59df8979605005ccb558563fee2452039359ff48e