[INFO] cloning repository https://github.com/lesguillemets/rsw
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lesguillemets/rsw" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flesguillemets%2Frsw", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flesguillemets%2Frsw'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fccfbb7f2cc5a9a64345f52ab2e3e24c3a15898e
[INFO] checking lesguillemets/rsw against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flesguillemets%2Frsw" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lesguillemets/rsw on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lesguillemets/rsw
[INFO] finished tweaking git repo https://github.com/lesguillemets/rsw
[INFO] tweaked toml for git repo https://github.com/lesguillemets/rsw written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/lesguillemets/rsw already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc43448870e7596faa890406990907ca2a6d333d57455e0244afa432f6708321
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bc43448870e7596faa890406990907ca2a6d333d57455e0244afa432f6708321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc43448870e7596faa890406990907ca2a6d333d57455e0244afa432f6708321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc43448870e7596faa890406990907ca2a6d333d57455e0244afa432f6708321", kill_on_drop: false }`
[INFO] [stdout] bc43448870e7596faa890406990907ca2a6d333d57455e0244afa432f6708321
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf6293cd13bbce8b47da6c200dfbeaea2d1f56dac47cdfce5966fdda96abd44e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cf6293cd13bbce8b47da6c200dfbeaea2d1f56dac47cdfce5966fdda96abd44e", kill_on_drop: false }`
[INFO] [stderr]     Checking stopwatch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     loop {
[INFO] [stdout] 15 | |         sleep(Duration::from_millis(10));
[INFO] [stdout] 16 | |         let current = SystemTime::now();
[INFO] [stdout] 17 | |         let diff = current.duration_since(initial).unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 20 | |         writer.flush();
[INFO] [stdout] 21 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 22 |       println!("Hello, world!");
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     loop {
[INFO] [stdout] 15 | |         sleep(Duration::from_millis(10));
[INFO] [stdout] 16 | |         let current = SystemTime::now();
[INFO] [stdout] 17 | |         let diff = current.duration_since(initial).unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 20 | |         writer.flush();
[INFO] [stdout] 21 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 22 |       println!("Hello, world!");
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "cf6293cd13bbce8b47da6c200dfbeaea2d1f56dac47cdfce5966fdda96abd44e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf6293cd13bbce8b47da6c200dfbeaea2d1f56dac47cdfce5966fdda96abd44e", kill_on_drop: false }`
[INFO] [stdout] cf6293cd13bbce8b47da6c200dfbeaea2d1f56dac47cdfce5966fdda96abd44e