[INFO] updating cached repository https://github.com/avahowell/npm-flip
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2c0f5f91d160d8565b303a0f66c7d973d82808b4
[INFO] checking avahowell/npm-flip against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favahowell%2Fnpm-flip" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/avahowell/npm-flip on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/avahowell/npm-flip
[INFO] finished tweaking git repo https://github.com/avahowell/npm-flip
[INFO] tweaked toml for git repo https://github.com/avahowell/npm-flip written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/avahowell/npm-flip already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] eec1ae929290dd94481828f8ea7b86a6cd817b1d30d3fc2184a47487d3e4654a
[INFO] running `"docker" "start" "-a" "eec1ae929290dd94481828f8ea7b86a6cd817b1d30d3fc2184a47487d3e4654a"`
[INFO] [stderr]     Checking libc v0.2.33
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking serde v1.0.21
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]     Checking iovec v0.1.1
[INFO] [stderr]     Checking net2 v0.2.31
[INFO] [stderr]     Checking num_cpus v1.7.0
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking futures-cpupool v0.1.7
[INFO] [stderr]     Checking bytes v0.4.5
[INFO] [stderr]     Checking mio v0.6.11
[INFO] [stderr]     Checking mime v0.3.5
[INFO] [stderr]     Checking tokio-io v0.1.4
[INFO] [stderr]     Checking tokio-core v0.1.10
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking hyper v0.11.7
[INFO] [stderr]     Checking serde_json v1.0.6
[INFO] [stderr]     Checking npm-flip v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.42s
[INFO] running `"docker" "inspect" "eec1ae929290dd94481828f8ea7b86a6cd817b1d30d3fc2184a47487d3e4654a"`
[INFO] running `"docker" "rm" "-f" "eec1ae929290dd94481828f8ea7b86a6cd817b1d30d3fc2184a47487d3e4654a"`
[INFO] [stdout] eec1ae929290dd94481828f8ea7b86a6cd817b1d30d3fc2184a47487d3e4654a