[INFO] cloning repository https://github.com/oliverkwebb/stopwatch-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oliverkwebb/stopwatch-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foliverkwebb%2Fstopwatch-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foliverkwebb%2Fstopwatch-rs'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foliverkwebb%2Fstopwatch-rs: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/oliverkwebb/stopwatch-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oliverkwebb/stopwatch-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foliverkwebb%2Fstopwatch-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foliverkwebb%2Fstopwatch-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a633d5be9538cc8a22e0daf5e023d53e0c34c8b2
[INFO] checking oliverkwebb/stopwatch-rs against try#e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b for pr-144896
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foliverkwebb%2Fstopwatch-rs" "/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/oliverkwebb/stopwatch-rs
[INFO] finished tweaking git repo https://github.com/oliverkwebb/stopwatch-rs
[INFO] tweaked toml for git repo https://github.com/oliverkwebb/stopwatch-rs written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/oliverkwebb/stopwatch-rs on toolchain e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/oliverkwebb/stopwatch-rs 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" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "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-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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d01a06e68002d82dcb55ccaf1caaaa193d5e60f4e64b0a6c981abe4842804f1
[INFO] running `Command { std: "docker" "start" "-a" "3d01a06e68002d82dcb55ccaf1caaaa193d5e60f4e64b0a6c981abe4842804f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d01a06e68002d82dcb55ccaf1caaaa193d5e60f4e64b0a6c981abe4842804f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d01a06e68002d82dcb55ccaf1caaaa193d5e60f4e64b0a6c981abe4842804f1", kill_on_drop: false }`
[INFO] [stdout] 3d01a06e68002d82dcb55ccaf1caaaa193d5e60f4e64b0a6c981abe4842804f1
[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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56102e688f73925003408f9a36dda00adf223f7bd10dee4928ae68fafd91d72c
[INFO] running `Command { std: "docker" "start" "-a" "56102e688f73925003408f9a36dda00adf223f7bd10dee4928ae68fafd91d72c", kill_on_drop: false }`
[INFO] [stderr]     Checking stopwatch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | /         write!(
[INFO] [stdout] 11 | |             stderr,
[INFO] [stdout] 12 | |             "{:02}:{:02}:{:02}.{:02}\r",
[INFO] [stdout] 13 | |             delta / 3_600_000,
[INFO] [stdout] ...  |
[INFO] [stdout] 16 | |             delta % 1_000
[INFO] [stdout] 17 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let _ = write!(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | /         write!(
[INFO] [stdout] 11 | |             stderr,
[INFO] [stdout] 12 | |             "{:02}:{:02}:{:02}.{:02}\r",
[INFO] [stdout] 13 | |             delta / 3_600_000,
[INFO] [stdout] ...  |
[INFO] [stdout] 16 | |             delta % 1_000
[INFO] [stdout] 17 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let _ = write!(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "56102e688f73925003408f9a36dda00adf223f7bd10dee4928ae68fafd91d72c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56102e688f73925003408f9a36dda00adf223f7bd10dee4928ae68fafd91d72c", kill_on_drop: false }`
[INFO] [stdout] 56102e688f73925003408f9a36dda00adf223f7bd10dee4928ae68fafd91d72c