[INFO] crate dynasmrt 0.3.1 is already in cache
[INFO] extracting crate dynasmrt 0.3.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/dynasmrt/0.3.1
[INFO] extracting crate dynasmrt 0.3.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/dynasmrt/0.3.1
[INFO] validating manifest of dynasmrt-0.3.1 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 dynasmrt-0.3.1 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 dynasmrt-0.3.1
[INFO] finished frobbing dynasmrt-0.3.1
[INFO] frobbed toml for dynasmrt-0.3.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/dynasmrt/0.3.1/Cargo.toml
[INFO] started frobbing dynasmrt-0.3.1
[INFO] finished frobbing dynasmrt-0.3.1
[INFO] frobbed toml for dynasmrt-0.3.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/dynasmrt/0.3.1/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 dynasmrt-0.3.1 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-1/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/dynasmrt/0.3.1:/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] 123713e6d995efa7da16b6baa74d79e107db5f3245f6569354f85e01d34e0f70
[INFO] running `"docker" "start" "-a" "123713e6d995efa7da16b6baa74d79e107db5f3245f6569354f85e01d34e0f70"`
[INFO] [stderr]    Compiling memmap v0.6.2
[INFO] [stderr]    Compiling dynasmrt v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/x86.rs:260:21
[INFO] [stderr]     |
[INFO] [stderr] 260 |                 let mut slice = &mut buffer[offset .. offset + size.in_bytes()];
[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 2.07s
[INFO] running `"docker" "inspect" "123713e6d995efa7da16b6baa74d79e107db5f3245f6569354f85e01d34e0f70"`
[INFO] running `"docker" "rm" "-f" "123713e6d995efa7da16b6baa74d79e107db5f3245f6569354f85e01d34e0f70"`
[INFO] [stdout] 123713e6d995efa7da16b6baa74d79e107db5f3245f6569354f85e01d34e0f70
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/dynasmrt/0.3.1:/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] 7488446c4d23dbe59de7a190e51c8063f6d8bf373f432ee7bac4feb1d8017c02
[INFO] running `"docker" "start" "-a" "7488446c4d23dbe59de7a190e51c8063f6d8bf373f432ee7bac4feb1d8017c02"`
[INFO] [stderr]    Compiling dynasmrt v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/x86.rs:260:21
[INFO] [stderr]     |
[INFO] [stderr] 260 |                 let mut slice = &mut buffer[offset .. offset + size.in_bytes()];
[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 0.87s
[INFO] running `"docker" "inspect" "7488446c4d23dbe59de7a190e51c8063f6d8bf373f432ee7bac4feb1d8017c02"`
[INFO] running `"docker" "rm" "-f" "7488446c4d23dbe59de7a190e51c8063f6d8bf373f432ee7bac4feb1d8017c02"`
[INFO] [stdout] 7488446c4d23dbe59de7a190e51c8063f6d8bf373f432ee7bac4feb1d8017c02
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/dynasmrt/0.3.1:/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] 1fbc9633886f7d780d55e111f0e4585cb27c50620899fd9d2fd41737242ea581
[INFO] running `"docker" "start" "-a" "1fbc9633886f7d780d55e111f0e4585cb27c50620899fd9d2fd41737242ea581"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/dynasmrt-6d312007fd161fcc
[INFO] [stderr]    Doc-tests dynasmrt
[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] [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" "1fbc9633886f7d780d55e111f0e4585cb27c50620899fd9d2fd41737242ea581"`
[INFO] running `"docker" "rm" "-f" "1fbc9633886f7d780d55e111f0e4585cb27c50620899fd9d2fd41737242ea581"`
[INFO] [stdout] 1fbc9633886f7d780d55e111f0e4585cb27c50620899fd9d2fd41737242ea581