Dec 06 13:39:56.906 INFO testing GrahamClark/collections-exercises-rust against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 13:39:56.906 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 13:39:57.310 INFO [stdout] 84ff5c8a0c4b03c18df66a8bf93bb5592d52a79b6b62ebc56308b0ecb9fa0495
Dec 06 13:39:57.316 INFO running `"docker" "start" "-a" "84ff5c8a0c4b03c18df66a8bf93bb5592d52a79b6b62ebc56308b0ecb9fa0495"`
Dec 06 13:39:58.904 INFO [stderr] usermod: no changes
Dec 06 13:39:58.967 INFO [stderr]    Compiling collections_exercises v0.1.0 (/source)
Dec 06 13:40:01.081 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.14s
Dec 06 13:40:01.081 INFO [stderr] su: No module specific data is present
Dec 06 13:40:01.852 INFO running `"docker" "inspect" "84ff5c8a0c4b03c18df66a8bf93bb5592d52a79b6b62ebc56308b0ecb9fa0495"`
Dec 06 13:40:02.138 INFO running `"docker" "rm" "-f" "84ff5c8a0c4b03c18df66a8bf93bb5592d52a79b6b62ebc56308b0ecb9fa0495"`
Dec 06 13:40:02.392 INFO [stdout] 84ff5c8a0c4b03c18df66a8bf93bb5592d52a79b6b62ebc56308b0ecb9fa0495
Dec 06 13:40:02.394 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 13:40:02.850 INFO [stdout] 9dd5d1ad449f5b965628ee5806bb8e46b6496c58951ed00cb99e16fbb44181ae
Dec 06 13:40:02.852 INFO running `"docker" "start" "-a" "9dd5d1ad449f5b965628ee5806bb8e46b6496c58951ed00cb99e16fbb44181ae"`
Dec 06 13:40:04.668 INFO [stderr] usermod: no changes
Dec 06 13:40:04.718 INFO [stderr]    Compiling collections_exercises v0.1.0 (/source)
Dec 06 13:40:06.112 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
Dec 06 13:40:06.112 INFO [stderr] su: No module specific data is present
Dec 06 13:40:06.954 INFO running `"docker" "inspect" "9dd5d1ad449f5b965628ee5806bb8e46b6496c58951ed00cb99e16fbb44181ae"`
Dec 06 13:40:07.238 INFO running `"docker" "rm" "-f" "9dd5d1ad449f5b965628ee5806bb8e46b6496c58951ed00cb99e16fbb44181ae"`
Dec 06 13:40:07.638 INFO [stdout] 9dd5d1ad449f5b965628ee5806bb8e46b6496c58951ed00cb99e16fbb44181ae
Dec 06 13:40:07.642 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 13:40:08.202 INFO [stdout] 86bb7825aed7e49d422fb08e0efddf36747d1e5fa03a84afa69c7bda8e8a9d02
Dec 06 13:40:08.204 INFO running `"docker" "start" "-a" "86bb7825aed7e49d422fb08e0efddf36747d1e5fa03a84afa69c7bda8e8a9d02"`
Dec 06 13:40:09.856 INFO [stderr] usermod: no changes
Dec 06 13:40:09.928 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Dec 06 13:40:09.932 INFO [stderr]      Running /target/debug/deps/collections_exercises-828b962d300da4e8
Dec 06 13:40:09.936 INFO [stdout] 
Dec 06 13:40:09.936 INFO [stdout] running 0 tests
Dec 06 13:40:09.936 INFO [stdout] 
Dec 06 13:40:09.936 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 13:40:09.936 INFO [stdout] 
Dec 06 13:40:09.936 INFO [stderr]      Running /target/debug/deps/collections_exercises-3ad99d2910e5d3c7
Dec 06 13:40:09.948 INFO [stdout] 
Dec 06 13:40:09.948 INFO [stdout] running 0 tests
Dec 06 13:40:09.948 INFO [stdout] 
Dec 06 13:40:09.948 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 13:40:09.948 INFO [stdout] 
Dec 06 13:40:09.948 INFO [stderr]    Doc-tests collections_exercises
Dec 06 13:40:10.736 INFO [stdout] 
Dec 06 13:40:10.736 INFO [stdout] running 0 tests
Dec 06 13:40:10.736 INFO [stdout] 
Dec 06 13:40:10.736 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 13:40:10.736 INFO [stdout] 
Dec 06 13:40:10.741 INFO [stderr] su: No module specific data is present
Dec 06 13:40:11.598 INFO running `"docker" "inspect" "86bb7825aed7e49d422fb08e0efddf36747d1e5fa03a84afa69c7bda8e8a9d02"`
Dec 06 13:40:11.980 INFO running `"docker" "rm" "-f" "86bb7825aed7e49d422fb08e0efddf36747d1e5fa03a84afa69c7bda8e8a9d02"`
Dec 06 13:40:12.270 INFO [stdout] 86bb7825aed7e49d422fb08e0efddf36747d1e5fa03a84afa69c7bda8e8a9d02