[INFO] updating cached repository nikhilm/threadtimes
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nikhilm/threadtimes
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nikhilm/threadtimes" "work/ex/beta-1.38-1/sources/1.37.0/gh/nikhilm/threadtimes"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nikhilm/threadtimes'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nikhilm/threadtimes" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nikhilm/threadtimes"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nikhilm/threadtimes'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 207511ff6d14b8d7a499d9089c320ef8b8a0f890
[INFO] sha for GitHub repo nikhilm/threadtimes: 207511ff6d14b8d7a499d9089c320ef8b8a0f890
[INFO] validating manifest of nikhilm/threadtimes 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 nikhilm/threadtimes 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 nikhilm/threadtimes
[INFO] finished frobbing nikhilm/threadtimes
[INFO] frobbed toml for nikhilm/threadtimes written to work/ex/beta-1.38-1/sources/1.37.0/gh/nikhilm/threadtimes/Cargo.toml
[INFO] started frobbing nikhilm/threadtimes
[INFO] finished frobbing nikhilm/threadtimes
[INFO] frobbed toml for nikhilm/threadtimes written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nikhilm/threadtimes/Cargo.toml
[INFO] crate nikhilm/threadtimes 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing nikhilm/threadtimes 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-1/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/nikhilm/threadtimes:/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] 409ffc41b3d1e2fb9bc1320ddddd12d83ab3dca24208c533e10b8489188560ad
[INFO] running `"docker" "start" "-a" "409ffc41b3d1e2fb9bc1320ddddd12d83ab3dca24208c533e10b8489188560ad"`
[INFO] [stderr]    Compiling cast v0.2.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.26
[INFO] [stderr]    Compiling term v0.5.1
[INFO] [stderr]    Compiling itertools-num v0.1.3
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling handlebars v0.32.4
[INFO] [stderr]    Compiling criterion-plot v0.2.5
[INFO] [stderr]    Compiling criterion-stats v0.2.5
[INFO] [stderr]    Compiling csv v1.0.3
[INFO] [stderr]    Compiling simplelog v0.5.3
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling criterion v0.2.5
[INFO] [stderr]    Compiling threadtimes v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(uniform_paths)] 
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/lib_linux.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[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 `threadtimes`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "409ffc41b3d1e2fb9bc1320ddddd12d83ab3dca24208c533e10b8489188560ad"`
[INFO] running `"docker" "rm" "-f" "409ffc41b3d1e2fb9bc1320ddddd12d83ab3dca24208c533e10b8489188560ad"`
[INFO] [stdout] 409ffc41b3d1e2fb9bc1320ddddd12d83ab3dca24208c533e10b8489188560ad