[INFO] crate postcard-cobs 0.1.5-pre is already in cache
[INFO] checking postcard-cobs-0.1.5-pre against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] extracting crate postcard-cobs 0.1.5-pre into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate postcard-cobs 0.1.5-pre on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate postcard-cobs 0.1.5-pre
[INFO] finished tweaking crates.io crate postcard-cobs 0.1.5-pre
[INFO] tweaked toml for crates.io crate postcard-cobs 0.1.5-pre written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "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] e1358d6872eed8c2624abda8b7095febedf3d487ea8b559a94af773ad1c279e2
[INFO] running `"docker" "start" "-a" "e1358d6872eed8c2624abda8b7095febedf3d487ea8b559a94af773ad1c279e2"`
[INFO] [stderr]     Checking postcard-cobs v0.1.5-pre (/opt/rustwide/workdir)
[INFO] [stderr]     Checking quickcheck v0.5.0
[INFO] [stderr] error[E0463]: can't find crate for `cobs`
[INFO] [stderr]  --> tests/test.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate cobs;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `postcard-cobs`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e1358d6872eed8c2624abda8b7095febedf3d487ea8b559a94af773ad1c279e2"`
[INFO] running `"docker" "rm" "-f" "e1358d6872eed8c2624abda8b7095febedf3d487ea8b559a94af773ad1c279e2"`
[INFO] [stdout] e1358d6872eed8c2624abda8b7095febedf3d487ea8b559a94af773ad1c279e2