Dec 14 09:58:21.378 INFO testing GrahamClark/collections-exercises-rust against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 09:58:21.378 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 14 09:58:21.833 INFO [stdout] a16739bf7b3f5f72b2760300a39519ac5c51db3726ca45bfdb7a7225dd10a14b
Dec 14 09:58:21.843 INFO running `"docker" "start" "-a" "a16739bf7b3f5f72b2760300a39519ac5c51db3726ca45bfdb7a7225dd10a14b"`
Dec 14 09:58:23.008 INFO [stderr] usermod: no changes
Dec 14 09:58:23.075 INFO [stderr]    Compiling collections_exercises v0.1.0 (/source)
Dec 14 09:58:25.347 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.30s
Dec 14 09:58:25.347 INFO [stderr] su: No module specific data is present
Dec 14 09:58:25.964 INFO running `"docker" "inspect" "a16739bf7b3f5f72b2760300a39519ac5c51db3726ca45bfdb7a7225dd10a14b"`
Dec 14 09:58:26.259 INFO running `"docker" "rm" "-f" "a16739bf7b3f5f72b2760300a39519ac5c51db3726ca45bfdb7a7225dd10a14b"`
Dec 14 09:58:26.643 INFO [stdout] a16739bf7b3f5f72b2760300a39519ac5c51db3726ca45bfdb7a7225dd10a14b
Dec 14 09:58:26.645 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 14 09:58:27.211 INFO [stdout] 5811135fcb269413ad852de5f26d6e58cfd5a3d666bec83feebefe852c36e7e9
Dec 14 09:58:27.213 INFO running `"docker" "start" "-a" "5811135fcb269413ad852de5f26d6e58cfd5a3d666bec83feebefe852c36e7e9"`
Dec 14 09:58:28.979 INFO [stderr] usermod: no changes
Dec 14 09:58:29.023 INFO [stderr]    Compiling collections_exercises v0.1.0 (/source)
Dec 14 09:58:30.263 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
Dec 14 09:58:30.271 INFO [stderr] su: No module specific data is present
Dec 14 09:58:30.773 INFO running `"docker" "inspect" "5811135fcb269413ad852de5f26d6e58cfd5a3d666bec83feebefe852c36e7e9"`
Dec 14 09:58:31.075 INFO running `"docker" "rm" "-f" "5811135fcb269413ad852de5f26d6e58cfd5a3d666bec83feebefe852c36e7e9"`
Dec 14 09:58:31.383 INFO [stdout] 5811135fcb269413ad852de5f26d6e58cfd5a3d666bec83feebefe852c36e7e9
Dec 14 09:58:31.385 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 14 09:58:31.883 INFO [stdout] 663f91e1545e33a22c317458e10a7f703c3a8753bb8c70cc1634206286ed3350
Dec 14 09:58:31.885 INFO running `"docker" "start" "-a" "663f91e1545e33a22c317458e10a7f703c3a8753bb8c70cc1634206286ed3350"`
Dec 14 09:58:33.479 INFO [stderr] usermod: no changes
Dec 14 09:58:33.560 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Dec 14 09:58:33.560 INFO [stdout] 
Dec 14 09:58:33.560 INFO [stderr]      Running /target/debug/deps/collections_exercises-625ef9e411d61ec7
Dec 14 09:58:33.560 INFO [stdout] running 0 tests
Dec 14 09:58:33.560 INFO [stdout] 
Dec 14 09:58:33.560 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 09:58:33.560 INFO [stdout] 
Dec 14 09:58:33.567 INFO [stderr]      Running /target/debug/deps/collections_exercises-d62969dd7a9ba599
Dec 14 09:58:33.575 INFO [stderr]    Doc-tests collections_exercises
Dec 14 09:58:33.575 INFO [stdout] 
Dec 14 09:58:33.575 INFO [stdout] running 0 tests
Dec 14 09:58:33.575 INFO [stdout] 
Dec 14 09:58:33.575 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 09:58:33.575 INFO [stdout] 
Dec 14 09:58:34.489 INFO [stdout] 
Dec 14 09:58:34.489 INFO [stdout] running 0 tests
Dec 14 09:58:34.489 INFO [stdout] 
Dec 14 09:58:34.489 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 09:58:34.489 INFO [stdout] 
Dec 14 09:58:34.497 INFO [stderr] su: No module specific data is present
Dec 14 09:58:35.479 INFO running `"docker" "inspect" "663f91e1545e33a22c317458e10a7f703c3a8753bb8c70cc1634206286ed3350"`
Dec 14 09:58:35.821 INFO running `"docker" "rm" "-f" "663f91e1545e33a22c317458e10a7f703c3a8753bb8c70cc1634206286ed3350"`
Dec 14 09:58:36.102 INFO [stdout] 663f91e1545e33a22c317458e10a7f703c3a8753bb8c70cc1634206286ed3350