[INFO] crate buffoon 0.5.0 is already in cache
[INFO] extracting crate buffoon 0.5.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/buffoon/0.5.0
[INFO] extracting crate buffoon 0.5.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/buffoon/0.5.0
[INFO] validating manifest of buffoon-0.5.0 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 buffoon-0.5.0 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 buffoon-0.5.0
[INFO] finished frobbing buffoon-0.5.0
[INFO] frobbed toml for buffoon-0.5.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/buffoon/0.5.0/Cargo.toml
[INFO] started frobbing buffoon-0.5.0
[INFO] finished frobbing buffoon-0.5.0
[INFO] frobbed toml for buffoon-0.5.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/buffoon/0.5.0/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 buffoon-0.5.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/buffoon/0.5.0:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] e7648714287550c57f83a2ba1bea224e47f4e86d2cad98fa84a4b8651369231e
[INFO] running `"docker" "start" "-a" "e7648714287550c57f83a2ba1bea224e47f4e86d2cad98fa84a4b8651369231e"`
[INFO] [stderr]    Compiling buffoon v0.5.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/input_stream.rs:104:17
[INFO] [stderr]     |
[INFO] [stderr] 104 |             let mut buf = slice::from_raw_parts_mut(ret.as_mut_ptr(), len);
[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 0.47s
[INFO] running `"docker" "inspect" "e7648714287550c57f83a2ba1bea224e47f4e86d2cad98fa84a4b8651369231e"`
[INFO] running `"docker" "rm" "-f" "e7648714287550c57f83a2ba1bea224e47f4e86d2cad98fa84a4b8651369231e"`
[INFO] [stdout] e7648714287550c57f83a2ba1bea224e47f4e86d2cad98fa84a4b8651369231e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/buffoon/0.5.0:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5794a9ee1b55f9eef3e533368b6bb54796e1671aa4bf3705e0d3f50cae311ed8
[INFO] running `"docker" "start" "-a" "5794a9ee1b55f9eef3e533368b6bb54796e1671aa4bf3705e0d3f50cae311ed8"`
[INFO] [stderr]    Compiling buffoon v0.5.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/input_stream.rs:104:17
[INFO] [stderr]     |
[INFO] [stderr] 104 |             let mut buf = slice::from_raw_parts_mut(ret.as_mut_ptr(), len);
[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 1.02s
[INFO] running `"docker" "inspect" "5794a9ee1b55f9eef3e533368b6bb54796e1671aa4bf3705e0d3f50cae311ed8"`
[INFO] running `"docker" "rm" "-f" "5794a9ee1b55f9eef3e533368b6bb54796e1671aa4bf3705e0d3f50cae311ed8"`
[INFO] [stdout] 5794a9ee1b55f9eef3e533368b6bb54796e1671aa4bf3705e0d3f50cae311ed8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/buffoon/0.5.0:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 6d0ba90e2ad6c25d76e5cbd6c2fdf1b9b80b0b96e93708f58b7a75c54ce6c690
[INFO] running `"docker" "start" "-a" "6d0ba90e2ad6c25d76e5cbd6c2fdf1b9b80b0b96e93708f58b7a75c54ce6c690"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/buffoon-c480918f0d170689
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test input_stream::test::test_reading_incorrect_type_from_field ... ok
[INFO] [stdout] test input_stream::test::test_reading_multi_byte_usize ... ok
[INFO] [stdout] test input_stream::test::test_reading_empty_stream ... ok
[INFO] [stdout] test input_stream::test::test_reading_sequential_fields ... ok
[INFO] [stdout] test input_stream::test::test_reading_multi_byte_tag_field ... ok
[INFO] [stdout] test input_stream::test::test_reading_single_byte_usize ... ok
[INFO] [stdout] test input_stream::test::test_reading_string ... ok
[INFO] [stdout] test input_stream::test::test_reading_twice_from_field ... ok
[INFO] [stdout] test input_stream::test::test_skipping_string_field ... ok
[INFO] [stdout] test test::test_writing_unit_struct ... ok
[INFO] [stdout] test test::test_writing_simple_message ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests buffoon
[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" "6d0ba90e2ad6c25d76e5cbd6c2fdf1b9b80b0b96e93708f58b7a75c54ce6c690"`
[INFO] running `"docker" "rm" "-f" "6d0ba90e2ad6c25d76e5cbd6c2fdf1b9b80b0b96e93708f58b7a75c54ce6c690"`
[INFO] [stdout] 6d0ba90e2ad6c25d76e5cbd6c2fdf1b9b80b0b96e93708f58b7a75c54ce6c690