[INFO] crate ring-channel 0.7.0 is already in cache
[INFO] checking ring-channel-0.7.0 against master#4007d4ef26eab44bdabc2b7574d032152264d3ad for pr-66919
[INFO] extracting crate ring-channel 0.7.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ring-channel 0.7.0 on toolchain 4007d4ef26eab44bdabc2b7574d032152264d3ad
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ring-channel 0.7.0
[INFO] finished tweaking crates.io crate ring-channel 0.7.0
[INFO] tweaked toml for crates.io crate ring-channel 0.7.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "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" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "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] 12d86486927fc29c8938cbacd216c45ae4bcc7b6dcf398966d8b23078dc0dfb8
[INFO] running `"docker" "start" "-a" "12d86486927fc29c8938cbacd216c45ae4bcc7b6dcf398966d8b23078dc0dfb8"`
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]    Compiling mockall_derive v0.5.2
[INFO] [stderr]     Checking criterion-plot v0.4.0
[INFO] [stderr]     Checking proptest v0.9.4
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking predicates v1.0.2
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking mockall v0.5.2
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]    Compiling proptest-derive v0.1.2
[INFO] [stderr]     Checking ring-channel v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 58.70s
[INFO] running `"docker" "inspect" "12d86486927fc29c8938cbacd216c45ae4bcc7b6dcf398966d8b23078dc0dfb8"`
[INFO] running `"docker" "rm" "-f" "12d86486927fc29c8938cbacd216c45ae4bcc7b6dcf398966d8b23078dc0dfb8"`
[INFO] [stdout] 12d86486927fc29c8938cbacd216c45ae4bcc7b6dcf398966d8b23078dc0dfb8