[INFO] cloning repository https://github.com/kirhgoff/rust_utils
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kirhgoff/rust_utils" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirhgoff%2Frust_utils", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirhgoff%2Frust_utils'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 662711b2e94f72c8636ca70fec98487260cb7a94
[INFO] checking kirhgoff/rust_utils against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirhgoff%2Frust_utils" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kirhgoff/rust_utils on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kirhgoff/rust_utils
[INFO] finished tweaking git repo https://github.com/kirhgoff/rust_utils
[INFO] tweaked toml for git repo https://github.com/kirhgoff/rust_utils written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/kirhgoff/rust_utils already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-rational v0.1.41
[INFO] [stderr]   Downloaded primal-estimate v0.2.1
[INFO] [stderr]   Downloaded primal v0.2.3
[INFO] [stderr]   Downloaded primal-bit v0.2.4
[INFO] [stderr]   Downloaded primal-check v0.2.3
[INFO] [stderr]   Downloaded hamming v0.1.3
[INFO] [stderr]   Downloaded primal-sieve v0.2.8
[INFO] [stderr]   Downloaded fraction v0.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c748e9ce3ec2aee3513a0340380acddb73c50d69227f0a0ab7b80c5ceee9117a
[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" "c748e9ce3ec2aee3513a0340380acddb73c50d69227f0a0ab7b80c5ceee9117a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c748e9ce3ec2aee3513a0340380acddb73c50d69227f0a0ab7b80c5ceee9117a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c748e9ce3ec2aee3513a0340380acddb73c50d69227f0a0ab7b80c5ceee9117a", kill_on_drop: false }`
[INFO] [stdout] c748e9ce3ec2aee3513a0340380acddb73c50d69227f0a0ab7b80c5ceee9117a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43632b528ce9a0cef6090e4a4dad51ecee0f64d6c6ebdf1e9710f726e4aef782
[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" "43632b528ce9a0cef6090e4a4dad51ecee0f64d6c6ebdf1e9710f726e4aef782", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking num-traits v0.1.42
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking primal-bit v0.2.4
[INFO] [stderr]     Checking primal-sieve v0.2.8
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking primal-check v0.2.3
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking num-bigint v0.1.41
[INFO] [stderr]     Checking primal v0.2.3
[INFO] [stderr]     Checking num-rational v0.1.41
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking fraction v0.3.7
[INFO] [stderr]     Checking rust_utils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.52s
[INFO] running `Command { std: "docker" "inspect" "43632b528ce9a0cef6090e4a4dad51ecee0f64d6c6ebdf1e9710f726e4aef782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43632b528ce9a0cef6090e4a4dad51ecee0f64d6c6ebdf1e9710f726e4aef782", kill_on_drop: false }`
[INFO] [stdout] 43632b528ce9a0cef6090e4a4dad51ecee0f64d6c6ebdf1e9710f726e4aef782