[INFO] crate docsrs-test 0.0.4 is already in cache
[INFO] extracting crate docsrs-test 0.0.4 into work/ex/beta-1.38-1/sources/1.37.0/reg/docsrs-test/0.0.4
[INFO] extracting crate docsrs-test 0.0.4 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/docsrs-test/0.0.4
[INFO] validating manifest of docsrs-test-0.0.4 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of docsrs-test-0.0.4 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing docsrs-test-0.0.4
[INFO] finished frobbing docsrs-test-0.0.4
[INFO] frobbed toml for docsrs-test-0.0.4 written to work/ex/beta-1.38-1/sources/1.37.0/reg/docsrs-test/0.0.4/Cargo.toml
[INFO] started frobbing docsrs-test-0.0.4
[INFO] finished frobbing docsrs-test-0.0.4
[INFO] frobbed toml for docsrs-test-0.0.4 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/docsrs-test/0.0.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing docsrs-test-0.0.4 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/docsrs-test/0.0.4:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] bc1aa97172e78d74d856abb1515703ac4944423c6d1e35ba7186698624ab6bba
[INFO] running `"docker" "start" "-a" "bc1aa97172e78d74d856abb1515703ac4944423c6d1e35ba7186698624ab6bba"`
[INFO] [stderr]    Compiling docsrs-test v0.0.4 (/opt/crater/workdir)
[INFO] [stderr] warning: constant item is never used: `PRIVATE_CONST`
[INFO] [stderr]   --> src/lib.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | const PRIVATE_CONST: bool = true;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `"docker" "inspect" "bc1aa97172e78d74d856abb1515703ac4944423c6d1e35ba7186698624ab6bba"`
[INFO] running `"docker" "rm" "-f" "bc1aa97172e78d74d856abb1515703ac4944423c6d1e35ba7186698624ab6bba"`
[INFO] [stdout] bc1aa97172e78d74d856abb1515703ac4944423c6d1e35ba7186698624ab6bba
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/docsrs-test/0.0.4:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0634a483b315a3e72646caf43d500b66f66cc41998706fa9299134bf066201a6
[INFO] running `"docker" "start" "-a" "0634a483b315a3e72646caf43d500b66f66cc41998706fa9299134bf066201a6"`
[INFO] [stderr]    Compiling docsrs-test v0.0.4 (/opt/crater/workdir)
[INFO] [stderr] warning: constant item is never used: `PRIVATE_CONST`
[INFO] [stderr]   --> src/lib.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | const PRIVATE_CONST: bool = true;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `"docker" "inspect" "0634a483b315a3e72646caf43d500b66f66cc41998706fa9299134bf066201a6"`
[INFO] running `"docker" "rm" "-f" "0634a483b315a3e72646caf43d500b66f66cc41998706fa9299134bf066201a6"`
[INFO] [stdout] 0634a483b315a3e72646caf43d500b66f66cc41998706fa9299134bf066201a6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/docsrs-test/0.0.4:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] ec02085150b50ca996a066d1ab67a6f0e5097b055e71a5ddf931631727c920d4
[INFO] running `"docker" "start" "-a" "ec02085150b50ca996a066d1ab67a6f0e5097b055e71a5ddf931631727c920d4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/docsrs_test-aa685ed97837807f
[INFO] [stderr]    Doc-tests docsrs-test
[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] [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" "ec02085150b50ca996a066d1ab67a6f0e5097b055e71a5ddf931631727c920d4"`
[INFO] running `"docker" "rm" "-f" "ec02085150b50ca996a066d1ab67a6f0e5097b055e71a5ddf931631727c920d4"`
[INFO] [stdout] ec02085150b50ca996a066d1ab67a6f0e5097b055e71a5ddf931631727c920d4