[INFO] crate postcard-cobs 0.1.5-pre is already in cache
[INFO] testing postcard-cobs-0.1.5-pre against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate postcard-cobs 0.1.5-pre into work/builds/worker-0/source
[INFO] validating manifest of crates.io crate postcard-cobs 0.1.5-pre on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "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 work/builds/worker-0/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 5d1d49284b04aadc83278ba1a5a92ddcfaeef74eb170907b9d1e3ae917e33f7c
[INFO] running `"docker" "start" "-a" "5d1d49284b04aadc83278ba1a5a92ddcfaeef74eb170907b9d1e3ae917e33f7c"`
[INFO] [stderr]    Compiling postcard-cobs v0.1.5-pre (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `"docker" "inspect" "5d1d49284b04aadc83278ba1a5a92ddcfaeef74eb170907b9d1e3ae917e33f7c"`
[INFO] running `"docker" "rm" "-f" "5d1d49284b04aadc83278ba1a5a92ddcfaeef74eb170907b9d1e3ae917e33f7c"`
[INFO] [stdout] 5d1d49284b04aadc83278ba1a5a92ddcfaeef74eb170907b9d1e3ae917e33f7c
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 06944eeb88f4aad829826101c54d17aebdd13b57157f8e621517ec9504226147
[INFO] running `"docker" "start" "-a" "06944eeb88f4aad829826101c54d17aebdd13b57157f8e621517ec9504226147"`
[INFO] [stderr]    Compiling quickcheck v0.5.0
[INFO] [stderr]    Compiling postcard-cobs v0.1.5-pre (/opt/rustwide/workdir)
[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" "06944eeb88f4aad829826101c54d17aebdd13b57157f8e621517ec9504226147"`
[INFO] running `"docker" "rm" "-f" "06944eeb88f4aad829826101c54d17aebdd13b57157f8e621517ec9504226147"`
[INFO] [stdout] 06944eeb88f4aad829826101c54d17aebdd13b57157f8e621517ec9504226147