[INFO] updating cached repository untitaker/mysteryshack
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/untitaker/mysteryshack
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/untitaker/mysteryshack" "work/ex/beta-1.38-1/sources/1.37.0/gh/untitaker/mysteryshack"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/untitaker/mysteryshack'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/untitaker/mysteryshack" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/untitaker/mysteryshack"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/untitaker/mysteryshack'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7413ecc205568ac3ad0696411f6b9a55526546c6
[INFO] sha for GitHub repo untitaker/mysteryshack: 7413ecc205568ac3ad0696411f6b9a55526546c6
[INFO] validating manifest of untitaker/mysteryshack 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 untitaker/mysteryshack 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 untitaker/mysteryshack
[INFO] finished frobbing untitaker/mysteryshack
[INFO] frobbed toml for untitaker/mysteryshack written to work/ex/beta-1.38-1/sources/1.37.0/gh/untitaker/mysteryshack/Cargo.toml
[INFO] started frobbing untitaker/mysteryshack
[INFO] finished frobbing untitaker/mysteryshack
[INFO] frobbed toml for untitaker/mysteryshack written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/untitaker/mysteryshack/Cargo.toml
[INFO] crate untitaker/mysteryshack 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing untitaker/mysteryshack 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-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/untitaker/mysteryshack:/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] 5030e82e4ec4057516c064afc3ef99ff58566adb0542955f5c2cbb9fb6984142
[INFO] running `"docker" "start" "-a" "5030e82e4ec4057516c064afc3ef99ff58566adb0542955f5c2cbb9fb6984142"`
[INFO] [stderr]    Compiling siphasher v0.2.1
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling openssl v0.9.7
[INFO] [stderr]    Compiling bitflags v0.7.1
[INFO] [stderr]    Compiling adler32 v0.3.0
[INFO] [stderr]    Compiling mac v0.1.0
[INFO] [stderr]    Compiling serde v0.9.7
[INFO] [stderr]    Compiling rc v0.1.1
[INFO] [stderr]    Compiling quick-error v1.1.0
[INFO] [stderr]    Compiling route-recognizer v0.1.11
[INFO] [stderr]    Compiling please-clap v0.1.0
[INFO] [stderr] error[E0658]: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/route-recognizer-0.1.11/src/nfa.rs:568:3
[INFO] [stderr]     |
[INFO] [stderr] 568 | #[bench]
[INFO] [stderr]     |   ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/route-recognizer-0.1.11/src/nfa.rs:582:3
[INFO] [stderr]     |
[INFO] [stderr] 582 | #[bench]
[INFO] [stderr]     |   ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/route-recognizer-0.1.11/src/nfa.rs:596:3
[INFO] [stderr]     |
[INFO] [stderr] 596 | #[bench]
[INFO] [stderr]     |   ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/route-recognizer-0.1.11/src/lib.rs:303:3
[INFO] [stderr]     |
[INFO] [stderr] 303 | #[bench]
[INFO] [stderr]     |   ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr] 
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling filetime v0.1.10
[INFO] [stderr]    Compiling termion v1.1.4
[INFO] [stderr]    Compiling openssl-sys v0.9.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.8
[INFO] [stderr]    Compiling utf-8 v0.6.0
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: Could not compile `route-recognizer`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "5030e82e4ec4057516c064afc3ef99ff58566adb0542955f5c2cbb9fb6984142"`
[INFO] running `"docker" "rm" "-f" "5030e82e4ec4057516c064afc3ef99ff58566adb0542955f5c2cbb9fb6984142"`
[INFO] [stdout] 5030e82e4ec4057516c064afc3ef99ff58566adb0542955f5c2cbb9fb6984142