[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 beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] c2420f87c096701d5c8b7235ac8db336e60c27fbef650bf0d16ae629e43b4fd3
[INFO] running `"docker" "start" "-a" "c2420f87c096701d5c8b7235ac8db336e60c27fbef650bf0d16ae629e43b4fd3"`
[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 0.24s
[INFO] running `"docker" "inspect" "c2420f87c096701d5c8b7235ac8db336e60c27fbef650bf0d16ae629e43b4fd3"`
[INFO] running `"docker" "rm" "-f" "c2420f87c096701d5c8b7235ac8db336e60c27fbef650bf0d16ae629e43b4fd3"`
[INFO] [stdout] c2420f87c096701d5c8b7235ac8db336e60c27fbef650bf0d16ae629e43b4fd3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5c3b26f186b060aaeeb6d17657efa0e2bc01137138f4b0554b0510809d2a9e9c
[INFO] running `"docker" "start" "-a" "5c3b26f186b060aaeeb6d17657efa0e2bc01137138f4b0554b0510809d2a9e9c"`
[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 0.53s
[INFO] running `"docker" "inspect" "5c3b26f186b060aaeeb6d17657efa0e2bc01137138f4b0554b0510809d2a9e9c"`
[INFO] running `"docker" "rm" "-f" "5c3b26f186b060aaeeb6d17657efa0e2bc01137138f4b0554b0510809d2a9e9c"`
[INFO] [stdout] 5c3b26f186b060aaeeb6d17657efa0e2bc01137138f4b0554b0510809d2a9e9c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] b5e2aa8f0d658412b27ea4ecc946f77836ee5eba400aa36e1f48e2ff046ca8fd
[INFO] running `"docker" "start" "-a" "b5e2aa8f0d658412b27ea4ecc946f77836ee5eba400aa36e1f48e2ff046ca8fd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/docsrs_test-43a3a1bd82aacdb7
[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 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] running `"docker" "inspect" "b5e2aa8f0d658412b27ea4ecc946f77836ee5eba400aa36e1f48e2ff046ca8fd"`
[INFO] running `"docker" "rm" "-f" "b5e2aa8f0d658412b27ea4ecc946f77836ee5eba400aa36e1f48e2ff046ca8fd"`
[INFO] [stdout] b5e2aa8f0d658412b27ea4ecc946f77836ee5eba400aa36e1f48e2ff046ca8fd