[INFO] updating cached repository https://github.com/YZY74224/learning_rust
[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] d8ebf5311954bee4972dd9abb67d48073a42576a
[INFO] testing YZY74224/learning_rust against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FYZY74224%2Flearning_rust" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/YZY74224/learning_rust 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/YZY74224/learning_rust
[INFO] finished tweaking git repo https://github.com/YZY74224/learning_rust
[INFO] tweaked toml for git repo https://github.com/YZY74224/learning_rust written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/YZY74224/learning_rust 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-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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] f2d1e8ed798cdad3d49a68f4d463c13f27d4a373be2adc3d6dc36139a307244a
[INFO] running `"docker" "start" "-a" "f2d1e8ed798cdad3d49a68f4d463c13f27d4a373be2adc3d6dc36139a307244a"`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "f2d1e8ed798cdad3d49a68f4d463c13f27d4a373be2adc3d6dc36139a307244a"`
[INFO] running `"docker" "rm" "-f" "f2d1e8ed798cdad3d49a68f4d463c13f27d4a373be2adc3d6dc36139a307244a"`
[INFO] [stdout] f2d1e8ed798cdad3d49a68f4d463c13f27d4a373be2adc3d6dc36139a307244a
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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] ad85948d24a06afbee6e050a085e23697ef7dc522de09d8061dde157ccfb4d05
[INFO] running `"docker" "start" "-a" "ad85948d24a06afbee6e050a085e23697ef7dc522de09d8061dde157ccfb4d05"`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `"docker" "inspect" "ad85948d24a06afbee6e050a085e23697ef7dc522de09d8061dde157ccfb4d05"`
[INFO] running `"docker" "rm" "-f" "ad85948d24a06afbee6e050a085e23697ef7dc522de09d8061dde157ccfb4d05"`
[INFO] [stdout] ad85948d24a06afbee6e050a085e23697ef7dc522de09d8061dde157ccfb4d05
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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] 695d7a6fdbf6006b64e3f0f3ffe9270ad11c8dd59c3f883853c9c877e12579a8
[INFO] running `"docker" "start" "-a" "695d7a6fdbf6006b64e3f0f3ffe9270ad11c8dd59c3f883853c9c877e12579a8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/learning_rust-f1c786963d3e8269
[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" "695d7a6fdbf6006b64e3f0f3ffe9270ad11c8dd59c3f883853c9c877e12579a8"`
[INFO] running `"docker" "rm" "-f" "695d7a6fdbf6006b64e3f0f3ffe9270ad11c8dd59c3f883853c9c877e12579a8"`
[INFO] [stdout] 695d7a6fdbf6006b64e3f0f3ffe9270ad11c8dd59c3f883853c9c877e12579a8