[INFO] crate marc 1.5.0 is already in cache
[INFO] extracting crate marc 1.5.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/marc/1.5.0
[INFO] extracting crate marc 1.5.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/marc/1.5.0
[INFO] validating manifest of marc-1.5.0 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 marc-1.5.0 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 marc-1.5.0
[INFO] finished frobbing marc-1.5.0
[INFO] frobbed toml for marc-1.5.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/marc/1.5.0/Cargo.toml
[INFO] started frobbing marc-1.5.0
[INFO] finished frobbing marc-1.5.0
[INFO] frobbed toml for marc-1.5.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/marc/1.5.0/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 marc-1.5.0 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/marc/1.5.0:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 08aa5b082e310663ac1ff91de6688890b3e9f73061e4ae83ba23c092fe64df15
[INFO] running `"docker" "start" "-a" "08aa5b082e310663ac1ff91de6688890b3e9f73061e4ae83ba23c092fe64df15"`
[INFO] [stderr] warning: profile `doc` is deprecated and has no effect
[INFO] [stderr]    Compiling marc v1.5.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:110:30
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn read<T: io::Read>(mut input: &mut T) -> Result<Option<Record<'static>>> {
[INFO] [stderr]     |                              ----^^^^^
[INFO] [stderr]     |                              |
[INFO] [stderr]     |                              help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `"docker" "inspect" "08aa5b082e310663ac1ff91de6688890b3e9f73061e4ae83ba23c092fe64df15"`
[INFO] running `"docker" "rm" "-f" "08aa5b082e310663ac1ff91de6688890b3e9f73061e4ae83ba23c092fe64df15"`
[INFO] [stdout] 08aa5b082e310663ac1ff91de6688890b3e9f73061e4ae83ba23c092fe64df15
[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/marc/1.5.0:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 044af518d598e17c37789ab1aabbfb868a11f841d4d2a207e8bc55e419b8ee10
[INFO] running `"docker" "start" "-a" "044af518d598e17c37789ab1aabbfb868a11f841d4d2a207e8bc55e419b8ee10"`
[INFO] [stderr] warning: profile `doc` is deprecated and has no effect
[INFO] [stderr]    Compiling marc v1.5.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:110:30
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn read<T: io::Read>(mut input: &mut T) -> Result<Option<Record<'static>>> {
[INFO] [stderr]     |                              ----^^^^^
[INFO] [stderr]     |                              |
[INFO] [stderr]     |                              help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.90s
[INFO] running `"docker" "inspect" "044af518d598e17c37789ab1aabbfb868a11f841d4d2a207e8bc55e419b8ee10"`
[INFO] running `"docker" "rm" "-f" "044af518d598e17c37789ab1aabbfb868a11f841d4d2a207e8bc55e419b8ee10"`
[INFO] [stdout] 044af518d598e17c37789ab1aabbfb868a11f841d4d2a207e8bc55e419b8ee10
[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/marc/1.5.0:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 22ddec58bb64a66da690accd0a1d07c825a7755078e3592e3848d0f8b1549f13
[INFO] running `"docker" "start" "-a" "22ddec58bb64a66da690accd0a1d07c825a7755078e3592e3848d0f8b1549f13"`
[INFO] [stderr] warning: profile `doc` is deprecated and has no effect
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/marc-ddceb1ec913d2983
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test field::subfield::test::should_find_subfields ... ok
[INFO] [stdout] test directory::test::should_parse_directory ... ok
[INFO] [stdout] test field::test::should_add_subfield ... ok
[INFO] [stdout] test field::test::should_filter_subfields ... ok
[INFO] [stdout] test tests::read::should_create_record_from_vec ... ok
[INFO] [stdout] test directory::test::should_parse_empty_directory ... ok
[INFO] [stdout] test field::subfield::subfields::test::should_iterate_subfields ... ok
[INFO] [stdout] test tests::read::should_read_record ... ok
[INFO] [stdout] test tests::read::should_get_field ... ok
[INFO] [stdout] test tests::read::shoud_parse_record ... ok
[INFO] [stdout] test tests::read::should_get_fields ... ok
[INFO] [stdout] test tests::write::should_write_record ... ok
[INFO] [stdout] test tests::read::sholud_build_record ... ok
[INFO] [stdout] test tests::read::should_iterate_records ... ok
[INFO] [stdout] test field::test::should_panic_if_field_is_too_large ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests marc
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - fields (line 527) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "22ddec58bb64a66da690accd0a1d07c825a7755078e3592e3848d0f8b1549f13"`
[INFO] running `"docker" "rm" "-f" "22ddec58bb64a66da690accd0a1d07c825a7755078e3592e3848d0f8b1549f13"`
[INFO] [stdout] 22ddec58bb64a66da690accd0a1d07c825a7755078e3592e3848d0f8b1549f13