[INFO] updating cached repository https://github.com/dropbox/fast_rsync
[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] 8c4c87578fb6787dabdb5f2bcb4b665ccbfba60e
[INFO] checking dropbox/fast_rsync against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdropbox%2Ffast_rsync" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dropbox/fast_rsync on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dropbox/fast_rsync
[INFO] finished tweaking git repo https://github.com/dropbox/fast_rsync
[INFO] tweaked toml for git repo https://github.com/dropbox/fast_rsync written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/dropbox/fast_rsync already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+ba72b15666b2491415aec703a02c2364fe5e2790" "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] f2df6deb01c48d1d91f2742a9ecb233ecd7361fcbfe169d863905270a032366d
[INFO] running `"docker" "start" "-a" "f2df6deb01c48d1d91f2742a9ecb233ecd7361fcbfe169d863905270a032366d"`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]    Compiling librsync-sys v0.1.1 (https://github.com/goffrie/librsync-rs?rev=ab9c427b5b20624fe533ad0247fe0f9c3460245e#ab9c427b)
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking fast_rsync v0.1.2-alpha.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling quickcheck_macros v0.9.1
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]     Checking tinytemplate v1.0.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking bstr v0.2.11
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking librsync v0.2.0 (https://github.com/goffrie/librsync-rs?rev=ab9c427b5b20624fe533ad0247fe0f9c3460245e#ab9c427b)
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking criterion-plot v0.4.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking criterion v0.3.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.33s
[INFO] running `"docker" "inspect" "f2df6deb01c48d1d91f2742a9ecb233ecd7361fcbfe169d863905270a032366d"`
[INFO] running `"docker" "rm" "-f" "f2df6deb01c48d1d91f2742a9ecb233ecd7361fcbfe169d863905270a032366d"`
[INFO] [stdout] f2df6deb01c48d1d91f2742a9ecb233ecd7361fcbfe169d863905270a032366d