[INFO] crate mkv_chain 0.3.1 is already in cache
[INFO] checking mkv_chain-0.3.1 against master#4007d4ef26eab44bdabc2b7574d032152264d3ad for pr-66919
[INFO] extracting crate mkv_chain 0.3.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate mkv_chain 0.3.1 on toolchain 4007d4ef26eab44bdabc2b7574d032152264d3ad
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mkv_chain 0.3.1
[INFO] removed 1 missing examples
[INFO] finished tweaking crates.io crate mkv_chain 0.3.1
[INFO] tweaked toml for crates.io crate mkv_chain 0.3.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate mkv_chain 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 0dd06e4573650bebdd797bca0665d5ce739a3d453b82042f337fc4b0c070d38a
[INFO] running `"docker" "start" "-a" "0dd06e4573650bebdd797bca0665d5ce739a3d453b82042f337fc4b0c070d38a"`
[INFO] [stderr]     Checking mkv_chain v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking pulldown-cmark v0.4.1
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]     Checking version-sync v0.8.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.14s
[INFO] running `"docker" "inspect" "0dd06e4573650bebdd797bca0665d5ce739a3d453b82042f337fc4b0c070d38a"`
[INFO] running `"docker" "rm" "-f" "0dd06e4573650bebdd797bca0665d5ce739a3d453b82042f337fc4b0c070d38a"`
[INFO] [stdout] 0dd06e4573650bebdd797bca0665d5ce739a3d453b82042f337fc4b0c070d38a