[INFO] crate credentials_to_env 0.4.7 is already in cache
[INFO] extracting crate credentials_to_env 0.4.7 into work/ex/beta-1.38-1/sources/1.37.0/reg/credentials_to_env/0.4.7
[INFO] extracting crate credentials_to_env 0.4.7 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/credentials_to_env/0.4.7
[INFO] validating manifest of credentials_to_env-0.4.7 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 credentials_to_env-0.4.7 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 credentials_to_env-0.4.7
[INFO] finished frobbing credentials_to_env-0.4.7
[INFO] frobbed toml for credentials_to_env-0.4.7 written to work/ex/beta-1.38-1/sources/1.37.0/reg/credentials_to_env/0.4.7/Cargo.toml
[INFO] started frobbing credentials_to_env-0.4.7
[INFO] finished frobbing credentials_to_env-0.4.7
[INFO] frobbed toml for credentials_to_env-0.4.7 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/credentials_to_env/0.4.7/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 credentials_to_env-0.4.7 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-0/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/credentials_to_env/0.4.7:/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] ae4e1a90c9280bd55b663afcbcb875236e93aa40cbb48366c99536156fa9b08b
[INFO] running `"docker" "start" "-a" "ae4e1a90c9280bd55b663afcbcb875236e93aa40cbb48366c99536156fa9b08b"`
[INFO] [stderr]    Compiling errno v0.2.4
[INFO] [stderr]    Compiling common_failures v0.1.1
[INFO] [stderr]    Compiling credentials v0.10.0
[INFO] [stderr]    Compiling exec v0.3.1
[INFO] [stderr]    Compiling credentials_to_env v0.4.7 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:175:1
[INFO] [stderr]     |
[INFO] [stderr] 175 | /// An error-handling wrapper around `run`.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 176 | quick_main!(run);
[INFO] [stderr]     | ----------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.84s
[INFO] running `"docker" "inspect" "ae4e1a90c9280bd55b663afcbcb875236e93aa40cbb48366c99536156fa9b08b"`
[INFO] running `"docker" "rm" "-f" "ae4e1a90c9280bd55b663afcbcb875236e93aa40cbb48366c99536156fa9b08b"`
[INFO] [stdout] ae4e1a90c9280bd55b663afcbcb875236e93aa40cbb48366c99536156fa9b08b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/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/credentials_to_env/0.4.7:/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] 5b8e0781bfa0fe0209b310b43c3fb959c25d9eea2f5ccd6ff611a086e7e8b47e
[INFO] running `"docker" "start" "-a" "5b8e0781bfa0fe0209b310b43c3fb959c25d9eea2f5ccd6ff611a086e7e8b47e"`
[INFO] [stderr]    Compiling credentials_to_env v0.4.7 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:175:1
[INFO] [stderr]     |
[INFO] [stderr] 175 | /// An error-handling wrapper around `run`.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 176 | quick_main!(run);
[INFO] [stderr]     | ----------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.96s
[INFO] running `"docker" "inspect" "5b8e0781bfa0fe0209b310b43c3fb959c25d9eea2f5ccd6ff611a086e7e8b47e"`
[INFO] running `"docker" "rm" "-f" "5b8e0781bfa0fe0209b310b43c3fb959c25d9eea2f5ccd6ff611a086e7e8b47e"`
[INFO] [stdout] 5b8e0781bfa0fe0209b310b43c3fb959c25d9eea2f5ccd6ff611a086e7e8b47e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/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/credentials_to_env/0.4.7:/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] e4ba23a489a61dc0e5d14a2b10bc3bbb1432c40c6655ed899186491caa084a5d
[INFO] running `"docker" "start" "-a" "e4ba23a489a61dc0e5d14a2b10bc3bbb1432c40c6655ed899186491caa084a5d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/credentials_to_env-63ca78cfe1eee169
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_args_parse ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e4ba23a489a61dc0e5d14a2b10bc3bbb1432c40c6655ed899186491caa084a5d"`
[INFO] running `"docker" "rm" "-f" "e4ba23a489a61dc0e5d14a2b10bc3bbb1432c40c6655ed899186491caa084a5d"`
[INFO] [stdout] e4ba23a489a61dc0e5d14a2b10bc3bbb1432c40c6655ed899186491caa084a5d