[INFO] cloning repository sprengvogel/rust-collatz
[INFO] running `"git" "clone" "--bare" "git://github.com/sprengvogel/rust-collatz.git" "work/cache/sources/gh/sprengvogel/rust-collatz"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/sprengvogel/rust-collatz'...
[INFO] running `"git" "clone" "work/cache/sources/gh/sprengvogel/rust-collatz" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sprengvogel/rust-collatz"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sprengvogel/rust-collatz'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sprengvogel/rust-collatz" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/sprengvogel/rust-collatz"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/sprengvogel/rust-collatz'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3f652b6e330212961dbbb905adf49d856155107f
[INFO] sha for GitHub repo sprengvogel/rust-collatz: 3f652b6e330212961dbbb905adf49d856155107f
[INFO] validating manifest of sprengvogel/rust-collatz on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sprengvogel/rust-collatz on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sprengvogel/rust-collatz
[INFO] finished frobbing sprengvogel/rust-collatz
[INFO] frobbed toml for sprengvogel/rust-collatz written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sprengvogel/rust-collatz/Cargo.toml
[INFO] started frobbing sprengvogel/rust-collatz
[INFO] finished frobbing sprengvogel/rust-collatz
[INFO] frobbed toml for sprengvogel/rust-collatz written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/sprengvogel/rust-collatz/Cargo.toml
[INFO] crate sprengvogel/rust-collatz already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] testing sprengvogel/rust-collatz against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sprengvogel/rust-collatz:/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=forbid" "-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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 6b0554bee4343a816c0d4744c954e97e505173dc5febe5454b4d37ad97ea0446
[INFO] running `"docker" "start" "-a" "6b0554bee4343a816c0d4744c954e97e505173dc5febe5454b4d37ad97ea0446"`
[INFO] [stderr]    Compiling num-bigint v0.2.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling collatz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `do_collatz_without_overflow_check`
[INFO] [stderr]   --> src/main.rs:58:1
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn do_collatz_without_overflow_check(mut x: u64) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `do_collatz_with_bigints`
[INFO] [stderr]   --> src/main.rs:75:1
[INFO] [stderr]    |
[INFO] [stderr] 75 | fn do_collatz_with_bigints(mut x: BigUint) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.91s
[INFO] running `"docker" "inspect" "6b0554bee4343a816c0d4744c954e97e505173dc5febe5454b4d37ad97ea0446"`
[INFO] running `"docker" "rm" "-f" "6b0554bee4343a816c0d4744c954e97e505173dc5febe5454b4d37ad97ea0446"`
[INFO] [stdout] 6b0554bee4343a816c0d4744c954e97e505173dc5febe5454b4d37ad97ea0446
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sprengvogel/rust-collatz:/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=forbid" "-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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 476d2bc996adfc02a4411a49288db38e89067edebaadf1a38e0686791883be3f
[INFO] running `"docker" "start" "-a" "476d2bc996adfc02a4411a49288db38e89067edebaadf1a38e0686791883be3f"`
[INFO] [stderr]    Compiling collatz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "476d2bc996adfc02a4411a49288db38e89067edebaadf1a38e0686791883be3f"`
[INFO] running `"docker" "rm" "-f" "476d2bc996adfc02a4411a49288db38e89067edebaadf1a38e0686791883be3f"`
[INFO] [stdout] 476d2bc996adfc02a4411a49288db38e89067edebaadf1a38e0686791883be3f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sprengvogel/rust-collatz:/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=forbid" "-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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] 1b21abf1d5a691cbd2f67d1dd2aba62b991b716276515891dfb4466844c1368b
[INFO] running `"docker" "start" "-a" "1b21abf1d5a691cbd2f67d1dd2aba62b991b716276515891dfb4466844c1368b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/collatz-db932ff3f7dec624
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::bench_collatz_without_overflow_check ... ok
[INFO] [stdout] test tests::bench_collatz ... ok
[INFO] [stdout] test tests::bench_do_collatz_with_bigints ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1b21abf1d5a691cbd2f67d1dd2aba62b991b716276515891dfb4466844c1368b"`
[INFO] running `"docker" "rm" "-f" "1b21abf1d5a691cbd2f67d1dd2aba62b991b716276515891dfb4466844c1368b"`
[INFO] [stdout] 1b21abf1d5a691cbd2f67d1dd2aba62b991b716276515891dfb4466844c1368b