[INFO] updating cached repository https://github.com/amatho/challenges-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 907ef7146c29f7c3703d9f6472eb849d4bfcc058
[INFO] testing amatho/challenges-rs against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Famatho%2Fchallenges-rs" "work/builds/worker-10/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amatho/challenges-rs on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/amatho/challenges-rs
[INFO] finished tweaking git repo https://github.com/amatho/challenges-rs
[INFO] tweaked toml for git repo https://github.com/amatho/challenges-rs written to work/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/amatho/challenges-rs already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] bd44df84b240de02680d7815d576a1871a457c3d3f089543694de5a92dd6e641
[INFO] running `"docker" "start" "-a" "bd44df84b240de02680d7815d576a1871a457c3d3f089543694de5a92dd6e641"`
[INFO] [stderr]    Compiling challenges v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `"docker" "inspect" "bd44df84b240de02680d7815d576a1871a457c3d3f089543694de5a92dd6e641"`
[INFO] running `"docker" "rm" "-f" "bd44df84b240de02680d7815d576a1871a457c3d3f089543694de5a92dd6e641"`
[INFO] [stdout] bd44df84b240de02680d7815d576a1871a457c3d3f089543694de5a92dd6e641
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] ae690f1e28599dfab53ef77205c1ca259bb72c67d7ae9afb8f6efbb7f09c9367
[INFO] running `"docker" "start" "-a" "ae690f1e28599dfab53ef77205c1ca259bb72c67d7ae9afb8f6efbb7f09c9367"`
[INFO] [stderr]    Compiling challenges v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "ae690f1e28599dfab53ef77205c1ca259bb72c67d7ae9afb8f6efbb7f09c9367"`
[INFO] running `"docker" "rm" "-f" "ae690f1e28599dfab53ef77205c1ca259bb72c67d7ae9afb8f6efbb7f09c9367"`
[INFO] [stdout] ae690f1e28599dfab53ef77205c1ca259bb72c67d7ae9afb8f6efbb7f09c9367
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 8fc63c65930d8ae23c6d5c7885cef22f73de98a48002b893b0915cf0b5a6c4a8
[INFO] running `"docker" "start" "-a" "8fc63c65930d8ae23c6d5c7885cef22f73de98a48002b893b0915cf0b5a6c4a8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/challenges-6e390298197baa12
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::get_middle ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/challenges-103598fba48a4975
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests challenges
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "8fc63c65930d8ae23c6d5c7885cef22f73de98a48002b893b0915cf0b5a6c4a8"`
[INFO] running `"docker" "rm" "-f" "8fc63c65930d8ae23c6d5c7885cef22f73de98a48002b893b0915cf0b5a6c4a8"`
[INFO] [stdout] 8fc63c65930d8ae23c6d5c7885cef22f73de98a48002b893b0915cf0b5a6c4a8