[INFO] crate cargo-external-doc 0.1.0 is already in cache
[INFO] extracting crate cargo-external-doc 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/cargo-external-doc/0.1.0
[INFO] extracting crate cargo-external-doc 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/cargo-external-doc/0.1.0
[INFO] validating manifest of cargo-external-doc-0.1.0 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 cargo-external-doc-0.1.0 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 cargo-external-doc-0.1.0
[INFO] finished frobbing cargo-external-doc-0.1.0
[INFO] frobbed toml for cargo-external-doc-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/cargo-external-doc/0.1.0/Cargo.toml
[INFO] started frobbing cargo-external-doc-0.1.0
[INFO] finished frobbing cargo-external-doc-0.1.0
[INFO] frobbed toml for cargo-external-doc-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/cargo-external-doc/0.1.0/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing cargo-external-doc-0.1.0 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/cargo-external-doc/0.1.0:/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] dbd54da9f709ffc9ff42430c4161a0ac6e9bda7c1932ce15c22db95d32d4bf71
[INFO] running `"docker" "start" "-a" "dbd54da9f709ffc9ff42430c4161a0ac6e9bda7c1932ce15c22db95d32d4bf71"`
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling tempfile v2.2.0
[INFO] [stderr]    Compiling handlebars v0.22.0
[INFO] [stderr]    Compiling serde_json v0.8.6
[INFO] [stderr]    Compiling cargo-external-doc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> src/main.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let result: String = String::from_utf8(stdout).expect("cargo command failed");
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test_result`
[INFO] [stderr]   --> src/main.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |             let test_result: String = String::from_utf8(test_stdout)
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: consider prefixing with an underscore: `_test_result`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `doc_result`
[INFO] [stderr]    --> src/main.rs:103:17
[INFO] [stderr]     |
[INFO] [stderr] 103 |             let doc_result: String = String::from_utf8(doc_stdout).expect("rustdoc command failed");
[INFO] [stderr]     |                 ^^^^^^^^^^ help: consider prefixing with an underscore: `_doc_result`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.16s
[INFO] running `"docker" "inspect" "dbd54da9f709ffc9ff42430c4161a0ac6e9bda7c1932ce15c22db95d32d4bf71"`
[INFO] running `"docker" "rm" "-f" "dbd54da9f709ffc9ff42430c4161a0ac6e9bda7c1932ce15c22db95d32d4bf71"`
[INFO] [stdout] dbd54da9f709ffc9ff42430c4161a0ac6e9bda7c1932ce15c22db95d32d4bf71
[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/cargo-external-doc/0.1.0:/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] 4cd2e09430056c2c02fa4f56c758f847fcf1ee1268108529f58d716336a1d803
[INFO] running `"docker" "start" "-a" "4cd2e09430056c2c02fa4f56c758f847fcf1ee1268108529f58d716336a1d803"`
[INFO] [stderr]    Compiling cargo-external-doc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> src/main.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let result: String = String::from_utf8(stdout).expect("cargo command failed");
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test_result`
[INFO] [stderr]   --> src/main.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |             let test_result: String = String::from_utf8(test_stdout)
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: consider prefixing with an underscore: `_test_result`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `doc_result`
[INFO] [stderr]    --> src/main.rs:103:17
[INFO] [stderr]     |
[INFO] [stderr] 103 |             let doc_result: String = String::from_utf8(doc_stdout).expect("rustdoc command failed");
[INFO] [stderr]     |                 ^^^^^^^^^^ help: consider prefixing with an underscore: `_doc_result`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `"docker" "inspect" "4cd2e09430056c2c02fa4f56c758f847fcf1ee1268108529f58d716336a1d803"`
[INFO] running `"docker" "rm" "-f" "4cd2e09430056c2c02fa4f56c758f847fcf1ee1268108529f58d716336a1d803"`
[INFO] [stdout] 4cd2e09430056c2c02fa4f56c758f847fcf1ee1268108529f58d716336a1d803
[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/cargo-external-doc/0.1.0:/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] 90aa24e5c63bfda0f3ed7ff95341b2a616160e46cd093b38dec111914aa0f935
[INFO] running `"docker" "start" "-a" "90aa24e5c63bfda0f3ed7ff95341b2a616160e46cd093b38dec111914aa0f935"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cargo_external_doc-d73d208731c9d6de
[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" "90aa24e5c63bfda0f3ed7ff95341b2a616160e46cd093b38dec111914aa0f935"`
[INFO] running `"docker" "rm" "-f" "90aa24e5c63bfda0f3ed7ff95341b2a616160e46cd093b38dec111914aa0f935"`
[INFO] [stdout] 90aa24e5c63bfda0f3ed7ff95341b2a616160e46cd093b38dec111914aa0f935