[INFO] crate postcard-cobs 0.1.5-pre is already in cache
[INFO] extracting crate postcard-cobs 0.1.5-pre into work/ex/beta-1.38-1/sources/1.37.0/reg/postcard-cobs/0.1.5-pre
[INFO] extracting crate postcard-cobs 0.1.5-pre into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/postcard-cobs/0.1.5-pre
[INFO] validating manifest of postcard-cobs-0.1.5-pre on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of postcard-cobs-0.1.5-pre on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing postcard-cobs-0.1.5-pre
[INFO] finished frobbing postcard-cobs-0.1.5-pre
[INFO] frobbed toml for postcard-cobs-0.1.5-pre written to work/ex/beta-1.38-1/sources/1.37.0/reg/postcard-cobs/0.1.5-pre/Cargo.toml
[INFO] started frobbing postcard-cobs-0.1.5-pre
[INFO] finished frobbing postcard-cobs-0.1.5-pre
[INFO] frobbed toml for postcard-cobs-0.1.5-pre written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/postcard-cobs/0.1.5-pre/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing postcard-cobs-0.1.5-pre against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/postcard-cobs/0.1.5-pre:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 783338a3efc4ea0609752f1118d817bec23e74daaaede388686cf4cdfe775816
[INFO] running `"docker" "start" "-a" "783338a3efc4ea0609752f1118d817bec23e74daaaede388686cf4cdfe775816"`
[INFO] [stderr]    Compiling postcard-cobs v0.1.5-pre (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `"docker" "inspect" "783338a3efc4ea0609752f1118d817bec23e74daaaede388686cf4cdfe775816"`
[INFO] running `"docker" "rm" "-f" "783338a3efc4ea0609752f1118d817bec23e74daaaede388686cf4cdfe775816"`
[INFO] [stdout] 783338a3efc4ea0609752f1118d817bec23e74daaaede388686cf4cdfe775816
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/postcard-cobs/0.1.5-pre:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 3db4154f9133dd2d5220ba18af8184f658264ad9ce851911636c5771a3e2d7d7
[INFO] running `"docker" "start" "-a" "3db4154f9133dd2d5220ba18af8184f658264ad9ce851911636c5771a3e2d7d7"`
[INFO] [stderr]    Compiling quickcheck v0.5.0
[INFO] [stderr]    Compiling postcard-cobs v0.1.5-pre (/opt/crater/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" "3db4154f9133dd2d5220ba18af8184f658264ad9ce851911636c5771a3e2d7d7"`
[INFO] running `"docker" "rm" "-f" "3db4154f9133dd2d5220ba18af8184f658264ad9ce851911636c5771a3e2d7d7"`
[INFO] [stdout] 3db4154f9133dd2d5220ba18af8184f658264ad9ce851911636c5771a3e2d7d7