[INFO] updating cached repository sacooper/GeneticAlgorithms-Rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sacooper/GeneticAlgorithms-Rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sacooper/GeneticAlgorithms-Rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/sacooper/GeneticAlgorithms-Rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sacooper/GeneticAlgorithms-Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sacooper/GeneticAlgorithms-Rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sacooper/GeneticAlgorithms-Rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sacooper/GeneticAlgorithms-Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e3f1bea271ed5efeadffaccb61f5f113a6bf5e60
[INFO] sha for GitHub repo sacooper/GeneticAlgorithms-Rust: e3f1bea271ed5efeadffaccb61f5f113a6bf5e60
[INFO] validating manifest of sacooper/GeneticAlgorithms-Rust 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 sacooper/GeneticAlgorithms-Rust 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 sacooper/GeneticAlgorithms-Rust
[INFO] finished frobbing sacooper/GeneticAlgorithms-Rust
[INFO] frobbed toml for sacooper/GeneticAlgorithms-Rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/sacooper/GeneticAlgorithms-Rust/Cargo.toml
[INFO] started frobbing sacooper/GeneticAlgorithms-Rust
[INFO] finished frobbing sacooper/GeneticAlgorithms-Rust
[INFO] frobbed toml for sacooper/GeneticAlgorithms-Rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sacooper/GeneticAlgorithms-Rust/Cargo.toml
[INFO] crate sacooper/GeneticAlgorithms-Rust 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] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sacooper/GeneticAlgorithms-Rust/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[INFO] the lockfile is outdated, regenerating it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] [stderr]     Updating git repository `https://github.com/japaric/parallel.rs`
[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] [stderr]     Updating git repository `https://github.com/japaric/parallel.rs`
[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 sacooper/GeneticAlgorithms-Rust 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sacooper/GeneticAlgorithms-Rust:/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] 6454dd05bee4d8cc2b96ef525c729d76fe2b23877c1f6c45ede719becfac7681
[INFO] running `"docker" "start" "-a" "6454dd05bee4d8cc2b96ef525c729d76fe2b23877c1f6c45ede719becfac7681"`
[INFO] [stderr]    Compiling parallel v0.0.0 (https://github.com/japaric/parallel.rs#4a33b53c)
[INFO] [stderr] error[E0425]: cannot find function `scoped` in module `thread`
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/parallel.rs-8c5334aac900dd4d/4a33b53/src/divide.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |         thread::scoped(move || {
[INFO] [stderr]    |                 ^^^^^^ not found in `thread`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `num_cpus` in module `os`
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/parallel.rs-8c5334aac900dd4d/4a33b53/src/apply.rs:31:40
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let granularity = data.len() / os::num_cpus() + 1;
[INFO] [stderr]    |                                        ^^^^^^^^ not found in `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/parallel.rs-8c5334aac900dd4d/4a33b53/src/lib.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | #![feature(core)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/parallel.rs-8c5334aac900dd4d/4a33b53/src/lib.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | #![feature(os)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/parallel.rs-8c5334aac900dd4d/4a33b53/src/lib.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | #![feature(plugin)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/parallel.rs-8c5334aac900dd4d/4a33b53/src/lib.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | #![feature(std_misc)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `parallel`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6454dd05bee4d8cc2b96ef525c729d76fe2b23877c1f6c45ede719becfac7681"`
[INFO] running `"docker" "rm" "-f" "6454dd05bee4d8cc2b96ef525c729d76fe2b23877c1f6c45ede719becfac7681"`
[INFO] [stdout] 6454dd05bee4d8cc2b96ef525c729d76fe2b23877c1f6c45ede719becfac7681