[INFO] fetching crate evcxr 0.4.4...
[INFO] checking evcxr-0.4.4 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate evcxr 0.4.4 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate evcxr 0.4.4 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate evcxr 0.4.4
[INFO] finished tweaking crates.io crate evcxr 0.4.4
[INFO] tweaked toml for crates.io crate evcxr 0.4.4 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate evcxr 0.4.4 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 115ce9b0630f3dbdd55432a0c7d5756571d3f51126156290db5c6762d5c54e89
[INFO] running `"docker" "start" "-a" "115ce9b0630f3dbdd55432a0c7d5756571d3f51126156290db5c6762d5c54e89"`
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking sig v1.0.0
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking which v2.0.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking evcxr v0.4.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.96s
[INFO] running `"docker" "inspect" "115ce9b0630f3dbdd55432a0c7d5756571d3f51126156290db5c6762d5c54e89"`
[INFO] running `"docker" "rm" "-f" "115ce9b0630f3dbdd55432a0c7d5756571d3f51126156290db5c6762d5c54e89"`
[INFO] [stdout] 115ce9b0630f3dbdd55432a0c7d5756571d3f51126156290db5c6762d5c54e89