[INFO] crate c_string 0.7.1-obsolete is already in cache
[INFO] extracting crate c_string 0.7.1-obsolete into work/ex/beta-1.37-6/sources/1.36.0/reg/c_string/0.7.1-obsolete
[INFO] extracting crate c_string 0.7.1-obsolete into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/c_string/0.7.1-obsolete
[INFO] validating manifest of c_string-0.7.1-obsolete on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of c_string-0.7.1-obsolete on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing c_string-0.7.1-obsolete
[INFO] finished frobbing c_string-0.7.1-obsolete
[INFO] frobbed toml for c_string-0.7.1-obsolete written to work/ex/beta-1.37-6/sources/1.36.0/reg/c_string/0.7.1-obsolete/Cargo.toml
[INFO] started frobbing c_string-0.7.1-obsolete
[INFO] finished frobbing c_string-0.7.1-obsolete
[INFO] frobbed toml for c_string-0.7.1-obsolete written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/c_string/0.7.1-obsolete/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing c_string-0.7.1-obsolete against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/c_string/0.7.1-obsolete:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] e81bff65778b73ebc11dc956f087c35ffded0ca61d0729410ef4f589001ad473
[INFO] running `"docker" "start" "-a" "e81bff65778b73ebc11dc956f087c35ffded0ca61d0729410ef4f589001ad473"`
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling c_string v0.7.1-obsolete (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `"docker" "inspect" "e81bff65778b73ebc11dc956f087c35ffded0ca61d0729410ef4f589001ad473"`
[INFO] running `"docker" "rm" "-f" "e81bff65778b73ebc11dc956f087c35ffded0ca61d0729410ef4f589001ad473"`
[INFO] [stdout] e81bff65778b73ebc11dc956f087c35ffded0ca61d0729410ef4f589001ad473
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/c_string/0.7.1-obsolete:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4e3999545fa810247738246764d3115ae29f7e9ddd718b896756fa23d11c8b2e
[INFO] running `"docker" "start" "-a" "4e3999545fa810247738246764d3115ae29f7e9ddd718b896756fa23d11c8b2e"`
[INFO] [stderr]    Compiling c_string v0.7.1-obsolete (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> tests/tests.rs:29:14
[INFO] [stderr]    |
[INFO] [stderr] 29 |     for i in (0 .. len) {
[INFO] [stderr]    |              ^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "4e3999545fa810247738246764d3115ae29f7e9ddd718b896756fa23d11c8b2e"`
[INFO] running `"docker" "rm" "-f" "4e3999545fa810247738246764d3115ae29f7e9ddd718b896756fa23d11c8b2e"`
[INFO] [stdout] 4e3999545fa810247738246764d3115ae29f7e9ddd718b896756fa23d11c8b2e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/c_string/0.7.1-obsolete:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] af0abc6c11825fe28544f94baabcc4f8240817eae4f3a71bc5469e035ae4a5bb
[INFO] running `"docker" "start" "-a" "af0abc6c11825fe28544f94baabcc4f8240817eae4f3a71bc5469e035ae4a5bb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/c_string-d38db159f15aa985
[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]      Running /opt/crater/target/debug/deps/tests-f544a5d74f019cd3
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test test_io_error_from_into_c_str_error ... ok
[INFO] [stdout] test test_io_error_from_nul_error ... ok
[INFO] [stdout] test test_c_str_macro ... ok
[INFO] [stdout] test test_c_str_buf_from_vec ... ok
[INFO] [stdout] test test_c_str_buf_from_iter ... ok
[INFO] [stdout] test test_c_str_buf_from_str ... ok
[INFO] [stdout] test test_iterator ... ok
[INFO] [stdout] test test_c_str_buf_into_vec ... ok
[INFO] [stdout] test test_owned_c_string_as_ptr ... ok
[INFO] [stdout] test test_owned_c_string_debug ... ok
[INFO] [stdout] test test_parse_c_multistring ... ok
[INFO] [stdout] test test_owned_c_string_to_bytes ... ok
[INFO] [stdout] test test_owned_c_string_deref ... ok
[INFO] [stdout] test test_c_string_new_fail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests c_string
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/c_str.rs - c_str (line 284) ... ok
[INFO] [stdout] test src/c_str.rs -  (line 49) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "af0abc6c11825fe28544f94baabcc4f8240817eae4f3a71bc5469e035ae4a5bb"`
[INFO] running `"docker" "rm" "-f" "af0abc6c11825fe28544f94baabcc4f8240817eae4f3a71bc5469e035ae4a5bb"`
[INFO] [stdout] af0abc6c11825fe28544f94baabcc4f8240817eae4f3a71bc5469e035ae4a5bb