[INFO] cloning repository https://github.com/jmamadeu/rust-match-control-flow
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmamadeu/rust-match-control-flow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmamadeu%2Frust-match-control-flow", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmamadeu%2Frust-match-control-flow'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc8aba538ca7056d6f88e187406b9e9bcf22cc0c
[INFO] checking jmamadeu/rust-match-control-flow against master#cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3 for pr-135841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmamadeu%2Frust-match-control-flow" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmamadeu/rust-match-control-flow on toolchain cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jmamadeu/rust-match-control-flow
[INFO] finished tweaking git repo https://github.com/jmamadeu/rust-match-control-flow
[INFO] tweaked toml for git repo https://github.com/jmamadeu/rust-match-control-flow written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jmamadeu/rust-match-control-flow 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" "+cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9cc1c68252c8bcfb6160447c3a1402b85479821b014ef061c093ef20eeef1989
[INFO] running `Command { std: "docker" "start" "-a" "9cc1c68252c8bcfb6160447c3a1402b85479821b014ef061c093ef20eeef1989", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9cc1c68252c8bcfb6160447c3a1402b85479821b014ef061c093ef20eeef1989", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cc1c68252c8bcfb6160447c3a1402b85479821b014ef061c093ef20eeef1989", kill_on_drop: false }`
[INFO] [stdout] 9cc1c68252c8bcfb6160447c3a1402b85479821b014ef061c093ef20eeef1989
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a3793379fb573577e8a42da980175c45fc27beff1572077d653a9935af8047d
[INFO] running `Command { std: "docker" "start" "-a" "9a3793379fb573577e8a42da980175c45fc27beff1572077d653a9935af8047d", kill_on_drop: false }`
[INFO] [stderr]     Checking match_control v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `n1`
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let n1 = Coin::try_from(19).expect("Error");
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_n1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n1`
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let n1 = Coin::try_from(19).expect("Error");
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_n1`
[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 0.17s
[INFO] running `Command { std: "docker" "inspect" "9a3793379fb573577e8a42da980175c45fc27beff1572077d653a9935af8047d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a3793379fb573577e8a42da980175c45fc27beff1572077d653a9935af8047d", kill_on_drop: false }`
[INFO] [stdout] 9a3793379fb573577e8a42da980175c45fc27beff1572077d653a9935af8047d