[INFO] crate buffoon 0.5.0 is already in cache
[INFO] testing buffoon-0.5.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate buffoon 0.5.0 into work/builds/worker-3/source
[INFO] validating manifest of crates.io crate buffoon 0.5.0 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate buffoon 0.5.0
[INFO] finished tweaking crates.io crate buffoon 0.5.0
[INFO] tweaked toml for crates.io crate buffoon 0.5.0 written to work/builds/worker-3/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] a0491994dfc1d98d3ec796f227a518a42fb407fbc9ab0ad94aeb2a57fda27c50
[INFO] running `"docker" "start" "-a" "a0491994dfc1d98d3ec796f227a518a42fb407fbc9ab0ad94aeb2a57fda27c50"`
[INFO] [stderr]    Compiling buffoon v0.5.0 (/opt/rustwide/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 0.46s
[INFO] running `"docker" "inspect" "a0491994dfc1d98d3ec796f227a518a42fb407fbc9ab0ad94aeb2a57fda27c50"`
[INFO] running `"docker" "rm" "-f" "a0491994dfc1d98d3ec796f227a518a42fb407fbc9ab0ad94aeb2a57fda27c50"`
[INFO] [stdout] a0491994dfc1d98d3ec796f227a518a42fb407fbc9ab0ad94aeb2a57fda27c50
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a9933a8feb2586e2a089407b79f0e9fe2895db7a5e24872a64b5ffef3b2bff2a
[INFO] running `"docker" "start" "-a" "a9933a8feb2586e2a089407b79f0e9fe2895db7a5e24872a64b5ffef3b2bff2a"`
[INFO] [stderr]    Compiling buffoon v0.5.0 (/opt/rustwide/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 0.70s
[INFO] running `"docker" "inspect" "a9933a8feb2586e2a089407b79f0e9fe2895db7a5e24872a64b5ffef3b2bff2a"`
[INFO] running `"docker" "rm" "-f" "a9933a8feb2586e2a089407b79f0e9fe2895db7a5e24872a64b5ffef3b2bff2a"`
[INFO] [stdout] a9933a8feb2586e2a089407b79f0e9fe2895db7a5e24872a64b5ffef3b2bff2a
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 01d0812089eb5c6a6d83fc7b4925b4476b521345c2bf4df9795e21b621fdde0d
[INFO] running `"docker" "start" "-a" "01d0812089eb5c6a6d83fc7b4925b4476b521345c2bf4df9795e21b621fdde0d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/buffoon-1d7d9a04cece9d52
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test input_stream::test::test_reading_empty_stream ... ok
[INFO] [stdout] test input_stream::test::test_reading_multi_byte_tag_field ... ok
[INFO] [stdout] test input_stream::test::test_reading_incorrect_type_from_field ... ok
[INFO] [stdout] test input_stream::test::test_reading_sequential_fields ... ok
[INFO] [stdout] test input_stream::test::test_reading_multi_byte_usize ... ok
[INFO] [stdout] test input_stream::test::test_reading_single_byte_usize ... 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_simple_message ... ok
[INFO] [stdout] test test::test_writing_unit_struct ... ok
[INFO] [stdout] test input_stream::test::test_reading_string ... 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" "01d0812089eb5c6a6d83fc7b4925b4476b521345c2bf4df9795e21b621fdde0d"`
[INFO] running `"docker" "rm" "-f" "01d0812089eb5c6a6d83fc7b4925b4476b521345c2bf4df9795e21b621fdde0d"`
[INFO] [stdout] 01d0812089eb5c6a6d83fc7b4925b4476b521345c2bf4df9795e21b621fdde0d