[INFO] cloning repository https://github.com/shade/jothello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shade/jothello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshade%2Fjothello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshade%2Fjothello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f43fe14411cce8d0405d6a490dd3afe277f01851
[INFO] checking shade/jothello against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshade%2Fjothello" "/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/shade/jothello on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shade/jothello
[INFO] finished tweaking git repo https://github.com/shade/jothello
[INFO] tweaked toml for git repo https://github.com/shade/jothello written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/shade/jothello already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18be1dd6b82f97b0bb8de871496b5484ed78568e972a8efba804cc2304cc0a3c
[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" "18be1dd6b82f97b0bb8de871496b5484ed78568e972a8efba804cc2304cc0a3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18be1dd6b82f97b0bb8de871496b5484ed78568e972a8efba804cc2304cc0a3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18be1dd6b82f97b0bb8de871496b5484ed78568e972a8efba804cc2304cc0a3c", kill_on_drop: false }`
[INFO] [stdout] 18be1dd6b82f97b0bb8de871496b5484ed78568e972a8efba804cc2304cc0a3c
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f0872b1edbea9ed756a5d2af4cc5b679b543b28122af568f7d729a287194b5d
[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" "4f0872b1edbea9ed756a5d2af4cc5b679b543b28122af568f7d729a287194b5d", kill_on_drop: false }`
[INFO] [stderr]     Checking jothello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: `{float}` is not an iterator
[INFO] [stdout]   --> src/build.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 |     for black in 0.8 {
[INFO] [stdout]    |                  ^^^ `{float}` is not an iterator
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Iterator` is not implemented for `{float}`
[INFO] [stdout]    = note: required because of the requirements on the impl of `IntoIterator` for `{float}`
[INFO] [stdout]    = note: required by `into_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jothello`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0277]: `{float}` is not an iterator
[INFO] [stdout]   --> src/build.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 |     for black in 0.8 {
[INFO] [stdout]    |                  ^^^ `{float}` is not an iterator
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Iterator` is not implemented for `{float}`
[INFO] [stdout]    = note: required because of the requirements on the impl of `IntoIterator` for `{float}`
[INFO] [stdout]    = note: required by `into_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4f0872b1edbea9ed756a5d2af4cc5b679b543b28122af568f7d729a287194b5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f0872b1edbea9ed756a5d2af4cc5b679b543b28122af568f7d729a287194b5d", kill_on_drop: false }`
[INFO] [stdout] 4f0872b1edbea9ed756a5d2af4cc5b679b543b28122af568f7d729a287194b5d