[INFO] fetching crate crucible 0.0.0...
[INFO] checking crucible-0.0.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate crucible 0.0.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate crucible 0.0.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate crucible 0.0.0
[INFO] finished tweaking crates.io crate crucible 0.0.0
[INFO] tweaked toml for crates.io crate crucible 0.0.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rusttype v0.1.2
[INFO] [stderr]   Downloaded clocksource v0.2.4
[INFO] [stderr]   Downloaded heatmap v0.6.6
[INFO] [stderr]   Downloaded stb_truetype v0.1.2
[INFO] [stderr]   Downloaded tic v0.2.4
[INFO] [stderr]   Downloaded waterfall v0.7.1
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a8af9edf2da5df70cb28acb126c4b90e570c5dbcdaf3b47595e70f6333f4907b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "a8af9edf2da5df70cb28acb126c4b90e570c5dbcdaf3b47595e70f6333f4907b"`
[INFO] [stderr]     Checking histogram v0.6.9
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking hsl v0.1.1
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]     Checking mpmc v0.1.5
[INFO] [stderr]     Checking allan v0.2.4
[INFO] [stderr]     Checking stb_truetype v0.1.2
[INFO] [stderr]     Checking clocksource v0.2.4
[INFO] [stderr]     Checking url v0.2.38
[INFO] [stderr]     Checking heatmap v0.6.6
[INFO] [stderr]     Checking rusttype v0.1.2
[INFO] [stderr]     Checking tiny_http v0.5.9
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stderr]     Checking waterfall v0.7.1
[INFO] [stderr]     Checking tic v0.2.4
[INFO] [stderr]     Checking crucible v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/metrics.rs:10:19
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
[INFO] [stderr]    |                   ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/metrics.rs:10:19
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
[INFO] [stderr]    |                   ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.41s
[INFO] running `"docker" "inspect" "a8af9edf2da5df70cb28acb126c4b90e570c5dbcdaf3b47595e70f6333f4907b"`
[INFO] running `"docker" "rm" "-f" "a8af9edf2da5df70cb28acb126c4b90e570c5dbcdaf3b47595e70f6333f4907b"`
[INFO] [stdout] a8af9edf2da5df70cb28acb126c4b90e570c5dbcdaf3b47595e70f6333f4907b