[INFO] crate monster 0.1.28 is already in cache
[INFO] extracting crate monster 0.1.28 into work/ex/beta-1.37-6/sources/1.36.0/reg/monster/0.1.28
[INFO] extracting crate monster 0.1.28 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/monster/0.1.28
[INFO] validating manifest of monster-0.1.28 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 monster-0.1.28 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 monster-0.1.28
[INFO] finished frobbing monster-0.1.28
[INFO] frobbed toml for monster-0.1.28 written to work/ex/beta-1.37-6/sources/1.36.0/reg/monster/0.1.28/Cargo.toml
[INFO] started frobbing monster-0.1.28
[INFO] finished frobbing monster-0.1.28
[INFO] frobbed toml for monster-0.1.28 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/monster/0.1.28/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 monster-0.1.28 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/monster/0.1.28:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 47dcaa37ea482c9ca2f788feceb9f1c321b6cb14232b6fa5fe747fbda48df8e0
[INFO] running `"docker" "start" "-a" "47dcaa37ea482c9ca2f788feceb9f1c321b6cb14232b6fa5fe747fbda48df8e0"`
[INFO] [stderr]    Compiling monster v0.1.28 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:71:22
[INFO] [stderr]    |
[INFO] [stderr] 71 |                 _ => return return Err(Error::UnexpectedRightBrace) // No standalone right brace allowed
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "47dcaa37ea482c9ca2f788feceb9f1c321b6cb14232b6fa5fe747fbda48df8e0"`
[INFO] running `"docker" "rm" "-f" "47dcaa37ea482c9ca2f788feceb9f1c321b6cb14232b6fa5fe747fbda48df8e0"`
[INFO] [stdout] 47dcaa37ea482c9ca2f788feceb9f1c321b6cb14232b6fa5fe747fbda48df8e0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/monster/0.1.28:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d910c4170d7f36baec56ced8f3b8496abdf091c3f2a912bceeee9492340dafd6
[INFO] running `"docker" "start" "-a" "d910c4170d7f36baec56ced8f3b8496abdf091c3f2a912bceeee9492340dafd6"`
[INFO] [stderr]    Compiling monster v0.1.28 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:71:22
[INFO] [stderr]    |
[INFO] [stderr] 71 |                 _ => return return Err(Error::UnexpectedRightBrace) // No standalone right brace allowed
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `"docker" "inspect" "d910c4170d7f36baec56ced8f3b8496abdf091c3f2a912bceeee9492340dafd6"`
[INFO] running `"docker" "rm" "-f" "d910c4170d7f36baec56ced8f3b8496abdf091c3f2a912bceeee9492340dafd6"`
[INFO] [stdout] d910c4170d7f36baec56ced8f3b8496abdf091c3f2a912bceeee9492340dafd6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/monster/0.1.28:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] a779caf3ec073c8d671882ccd51e85d03afbec2a95a858255706b725ae714cb2
[INFO] running `"docker" "start" "-a" "a779caf3ec073c8d671882ccd51e85d03afbec2a95a858255706b725ae714cb2"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 18 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/monster-aa7239b5de4030d2
[INFO] [stdout] test incubation::ref_eq::test::ref_eq_literal ... ok
[INFO] [stdout] test incubation::ref_eq::test::ref_eq_box ... ok
[INFO] [stdout] test incubation::reverse_bitorder::test::involution_u8 ... ok
[INFO] [stdout] test incubation::ref_eq::test::ref_eq_rc ... ok
[INFO] [stdout] test incubation::reverse_bitorder::test::sample_u16 ... ok
[INFO] [stdout] test incubation::reverse_bitorder::test::sample_u8 ... ok
[INFO] [stdout] test incubation::slice_take_while::test::slice_take_while_basic ... ok
[INFO] [stdout] test incubation::slice_take_while::test::slice_take_while_identity ... ok
[INFO] [stdout] test incubation::split_int::test::mut_u16_get_high ... ok
[INFO] [stdout] test incubation::split_int::test::mut_u16_get_low ... ok
[INFO] [stdout] test incubation::split_int::test::mut_u16_set_low ... ok
[INFO] [stdout] test incubation::split_int::test::u16_high ... ok
[INFO] [stdout] test incubation::swap_tuple::tests::swap_tuple_value ... ok
[INFO] [stdout] test incubation::swap_tuple::tests::swap_tuple_ref ... ok
[INFO] [stdout] test incubation::split_int::test::u16_low ... ok
[INFO] [stdout] test incubation::slice_take_while::test::slice_take_while_empty ... ok
[INFO] [stdout] test incubation::split_int::test::mut_u16_set_high ... ok
[INFO] [stderr]    Doc-tests monster
[INFO] [stdout] test incubation::reverse_bitorder::test::involution_u16 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test src/incubation/macro_init_tests.rs - init_tests (line 6) ... ok
[INFO] [stdout] test src/incubation/anon.rs - anon (line 4) ... ok
[INFO] [stdout] test src/incubation/map_ref_mut.rs - incubation::map_ref_mut::MapRefMutExt::map_ref_mut (line 35) ... ok
[INFO] [stdout] test src/incubation/global_init_cleanup.rs - incubation::global_init_cleanup (line 3) ... ok
[INFO] [stdout] test src/incubation/fmt/mod.rs - incubation::fmt::format (line 22) ... ok
[INFO] [stdout] test src/incubation/map_ref_mut.rs - incubation::map_ref_mut::map_ref_mut (line 9) ... ok
[INFO] [stdout] test src/incubation/find_and_take.rs - incubation::find_and_take (line 4) ... ok
[INFO] [stdout] test src/incubation/macro_array_type.rs - array_type (line 19) ... ok
[INFO] [stdout] test src/incubation/mutate.rs - mutate (line 5) ... ok
[INFO] [stdout] test src/incubation/with_lock.rs - incubation::with_lock::WithLock::with_lock (line 7) ... ok
[INFO] [stdout] test src/incubation/some_if.rs - incubation::some_if::some_if (line 5) ... ok
[INFO] [stdout] test src/incubation/zip_ends.rs - incubation::zip_ends::ZipEnds (line 6) ... ok
[INFO] [stdout] test src/incubation/owning_ref_mut.rs - incubation::owning_ref_mut::OwningRefMut (line 9) ... ok
[INFO] [stdout] test src/incubation/slice_drop_last.rs - incubation::slice_drop_last (line 3) ... ok
[INFO] [stdout] test src/incubation/slice_drop_first.rs - incubation::slice_drop_first (line 3) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "a779caf3ec073c8d671882ccd51e85d03afbec2a95a858255706b725ae714cb2"`
[INFO] running `"docker" "rm" "-f" "a779caf3ec073c8d671882ccd51e85d03afbec2a95a858255706b725ae714cb2"`
[INFO] [stdout] a779caf3ec073c8d671882ccd51e85d03afbec2a95a858255706b725ae714cb2