[INFO] updating cached repository valarauca/bechmark_ct
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/valarauca/bechmark_ct
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/valarauca/bechmark_ct" "work/ex/beta-1.38-1/sources/1.37.0/gh/valarauca/bechmark_ct"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/valarauca/bechmark_ct'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/valarauca/bechmark_ct" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/valarauca/bechmark_ct"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/valarauca/bechmark_ct'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f94c084e899e5428d0e317bf832d2c6102d889eb
[INFO] sha for GitHub repo valarauca/bechmark_ct: f94c084e899e5428d0e317bf832d2c6102d889eb
[INFO] validating manifest of valarauca/bechmark_ct 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 valarauca/bechmark_ct 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 valarauca/bechmark_ct
[INFO] removed path dependency amd64_timer from valarauca/bechmark_ct
[INFO] finished frobbing valarauca/bechmark_ct
[INFO] frobbed toml for valarauca/bechmark_ct written to work/ex/beta-1.38-1/sources/1.37.0/gh/valarauca/bechmark_ct/Cargo.toml
[INFO] started frobbing valarauca/bechmark_ct
[INFO] removed path dependency amd64_timer from valarauca/bechmark_ct
[INFO] finished frobbing valarauca/bechmark_ct
[INFO] frobbed toml for valarauca/bechmark_ct written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/valarauca/bechmark_ct/Cargo.toml
[INFO] crate valarauca/bechmark_ct already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/valarauca/bechmark_ct/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 valarauca/bechmark_ct against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/valarauca/bechmark_ct:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 030d177ad18859d9b7de2828f5335d9b9954628c80cc6f7d6a64509c860461aa
[INFO] running `"docker" "start" "-a" "030d177ad18859d9b7de2828f5335d9b9954628c80cc6f7d6a64509c860461aa"`
[INFO] [stderr] warning: dependency (amd64_timer) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling consistenttime v0.2.0
[INFO] [stderr]    Compiling amd64_timer v1.2.0
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/amd64_timer-1.2.0/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(asm)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `amd64_timer`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "030d177ad18859d9b7de2828f5335d9b9954628c80cc6f7d6a64509c860461aa"`
[INFO] running `"docker" "rm" "-f" "030d177ad18859d9b7de2828f5335d9b9954628c80cc6f7d6a64509c860461aa"`
[INFO] [stdout] 030d177ad18859d9b7de2828f5335d9b9954628c80cc6f7d6a64509c860461aa