[INFO] crate waterbear-instruction-derive 0.1.0 is already in cache
[INFO] extracting crate waterbear-instruction-derive 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/waterbear-instruction-derive/0.1.0
[INFO] extracting crate waterbear-instruction-derive 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/waterbear-instruction-derive/0.1.0
[INFO] validating manifest of waterbear-instruction-derive-0.1.0 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 waterbear-instruction-derive-0.1.0 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 waterbear-instruction-derive-0.1.0
[INFO] finished frobbing waterbear-instruction-derive-0.1.0
[INFO] frobbed toml for waterbear-instruction-derive-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/waterbear-instruction-derive/0.1.0/Cargo.toml
[INFO] started frobbing waterbear-instruction-derive-0.1.0
[INFO] finished frobbing waterbear-instruction-derive-0.1.0
[INFO] frobbed toml for waterbear-instruction-derive-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/waterbear-instruction-derive/0.1.0/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing waterbear-instruction-derive-0.1.0 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/waterbear-instruction-derive/0.1.0:/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] 40812cf3c740effa51ae1ed9a74fb859359b7e5fc569d846ebd3c8b6e5bfa00e
[INFO] running `"docker" "start" "-a" "40812cf3c740effa51ae1ed9a74fb859359b7e5fc569d846ebd3c8b6e5bfa00e"`
[INFO] [stderr]    Compiling waterbear-instruction-derive v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:530:21
[INFO] [stderr]     |
[INFO] [stderr] 530 |                 let mut mask: u32 = make_mask(size) << ((high + 1) - size);
[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 3.58s
[INFO] running `"docker" "inspect" "40812cf3c740effa51ae1ed9a74fb859359b7e5fc569d846ebd3c8b6e5bfa00e"`
[INFO] running `"docker" "rm" "-f" "40812cf3c740effa51ae1ed9a74fb859359b7e5fc569d846ebd3c8b6e5bfa00e"`
[INFO] [stdout] 40812cf3c740effa51ae1ed9a74fb859359b7e5fc569d846ebd3c8b6e5bfa00e
[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/waterbear-instruction-derive/0.1.0:/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] bc2817cd29a0a1d4bf090631aba795a6535c26b88db4bbb9b244f565b809f4c7
[INFO] running `"docker" "start" "-a" "bc2817cd29a0a1d4bf090631aba795a6535c26b88db4bbb9b244f565b809f4c7"`
[INFO] [stderr]    Compiling waterbear-instruction-derive v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:530:21
[INFO] [stderr]     |
[INFO] [stderr] 530 |                 let mut mask: u32 = make_mask(size) << ((high + 1) - size);
[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 1.86s
[INFO] running `"docker" "inspect" "bc2817cd29a0a1d4bf090631aba795a6535c26b88db4bbb9b244f565b809f4c7"`
[INFO] running `"docker" "rm" "-f" "bc2817cd29a0a1d4bf090631aba795a6535c26b88db4bbb9b244f565b809f4c7"`
[INFO] [stdout] bc2817cd29a0a1d4bf090631aba795a6535c26b88db4bbb9b244f565b809f4c7
[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/waterbear-instruction-derive/0.1.0:/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] d50092cb5fb05b09fe01ba0fd1fd4fdd8ed96f1a8a618201f64cdd3c177e784f
[INFO] running `"docker" "start" "-a" "d50092cb5fb05b09fe01ba0fd1fd4fdd8ed96f1a8a618201f64cdd3c177e784f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/waterbear_instruction_derive-22792a8309e19955
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::test_bit_combinations ... ok
[INFO] [stdout] test tests::test_combinations_to_bits ... ok
[INFO] [stdout] test tests::test_tokenize_bit_pattern ... ok
[INFO] [stdout] test tests::test_parse_bit_pattern ... ok
[INFO] [stdout] test tests::test_all_possible_opcodes ... ok
[INFO] [stdout] test tests::test_parse_bit_pattern2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests waterbear-instruction-derive
[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] running `"docker" "inspect" "d50092cb5fb05b09fe01ba0fd1fd4fdd8ed96f1a8a618201f64cdd3c177e784f"`
[INFO] running `"docker" "rm" "-f" "d50092cb5fb05b09fe01ba0fd1fd4fdd8ed96f1a8a618201f64cdd3c177e784f"`
[INFO] [stdout] d50092cb5fb05b09fe01ba0fd1fd4fdd8ed96f1a8a618201f64cdd3c177e784f