[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-1.38-1/sources/1.37.0/reg/c_string/0.7.1-obsolete
[INFO] extracting crate c_string 0.7.1-obsolete into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/c_string/0.7.1-obsolete
[INFO] validating manifest of c_string-0.7.1-obsolete 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 c_string-0.7.1-obsolete 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 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-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/reg/c_string/0.7.1-obsolete/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 c_string-0.7.1-obsolete 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 840cc272d43e9a82c3a4bad0d94e9099d168098156563da0e25a4410c2f03ab3
[INFO] running `"docker" "start" "-a" "840cc272d43e9a82c3a4bad0d94e9099d168098156563da0e25a4410c2f03ab3"`
[INFO] [stderr]    Compiling c_string v0.7.1-obsolete (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `"docker" "inspect" "840cc272d43e9a82c3a4bad0d94e9099d168098156563da0e25a4410c2f03ab3"`
[INFO] running `"docker" "rm" "-f" "840cc272d43e9a82c3a4bad0d94e9099d168098156563da0e25a4410c2f03ab3"`
[INFO] [stdout] 840cc272d43e9a82c3a4bad0d94e9099d168098156563da0e25a4410c2f03ab3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a21057ee7a48872f7b6061f1621f82ecde4e0533f03e393be80da247f9e409b4
[INFO] running `"docker" "start" "-a" "a21057ee7a48872f7b6061f1621f82ecde4e0533f03e393be80da247f9e409b4"`
[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 1.05s
[INFO] running `"docker" "inspect" "a21057ee7a48872f7b6061f1621f82ecde4e0533f03e393be80da247f9e409b4"`
[INFO] running `"docker" "rm" "-f" "a21057ee7a48872f7b6061f1621f82ecde4e0533f03e393be80da247f9e409b4"`
[INFO] [stdout] a21057ee7a48872f7b6061f1621f82ecde4e0533f03e393be80da247f9e409b4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] a60aac12b804f59987ede4dfc71c55c107404acd7c8c7b37b8d34cd8cb222d4b
[INFO] running `"docker" "start" "-a" "a60aac12b804f59987ede4dfc71c55c107404acd7c8c7b37b8d34cd8cb222d4b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/c_string-8a9521c522aa8757
[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-120de5c7c65b502d
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[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_io_error_from_into_c_str_error ... ok
[INFO] [stdout] test test_c_str_buf_into_vec ... ok
[INFO] [stdout] test test_owned_c_string_deref ... ok
[INFO] [stdout] test test_c_str_buf_from_str ... ok
[INFO] [stdout] test test_c_str_buf_from_iter ... ok
[INFO] [stdout] test test_iterator ... 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_as_ptr ... ok
[INFO] [stdout] test test_owned_c_string_debug ... 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" "a60aac12b804f59987ede4dfc71c55c107404acd7c8c7b37b8d34cd8cb222d4b"`
[INFO] running `"docker" "rm" "-f" "a60aac12b804f59987ede4dfc71c55c107404acd7c8c7b37b8d34cd8cb222d4b"`
[INFO] [stdout] a60aac12b804f59987ede4dfc71c55c107404acd7c8c7b37b8d34cd8cb222d4b