[INFO] crate mscorlib_safe_derive 0.1.3 is already in cache
[INFO] extracting crate mscorlib_safe_derive 0.1.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/mscorlib_safe_derive/0.1.3
[INFO] extracting crate mscorlib_safe_derive 0.1.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mscorlib_safe_derive/0.1.3
[INFO] validating manifest of mscorlib_safe_derive-0.1.3 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 mscorlib_safe_derive-0.1.3 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 mscorlib_safe_derive-0.1.3
[INFO] finished frobbing mscorlib_safe_derive-0.1.3
[INFO] frobbed toml for mscorlib_safe_derive-0.1.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/mscorlib_safe_derive/0.1.3/Cargo.toml
[INFO] started frobbing mscorlib_safe_derive-0.1.3
[INFO] finished frobbing mscorlib_safe_derive-0.1.3
[INFO] frobbed toml for mscorlib_safe_derive-0.1.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mscorlib_safe_derive/0.1.3/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 mscorlib_safe_derive-0.1.3 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-4/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/mscorlib_safe_derive/0.1.3:/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] 28df7c8ad2b627aa5b863fe1c219a375cbea6d72c722993576b1cce5ac8b1954
[INFO] running `"docker" "start" "-a" "28df7c8ad2b627aa5b863fe1c219a375cbea6d72c722993576b1cce5ac8b1954"`
[INFO] [stderr]    Compiling mscorlib_safe_derive v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:56:21
[INFO] [stderr]    |
[INFO] [stderr] 56 |                 let mut expanded = quote! {
[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 1.05s
[INFO] running `"docker" "inspect" "28df7c8ad2b627aa5b863fe1c219a375cbea6d72c722993576b1cce5ac8b1954"`
[INFO] running `"docker" "rm" "-f" "28df7c8ad2b627aa5b863fe1c219a375cbea6d72c722993576b1cce5ac8b1954"`
[INFO] [stdout] 28df7c8ad2b627aa5b863fe1c219a375cbea6d72c722993576b1cce5ac8b1954
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/mscorlib_safe_derive/0.1.3:/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] e7529da464c56daae7c166cffa29616d89984bccdbf36e7d91e6696457374eb3
[INFO] running `"docker" "start" "-a" "e7529da464c56daae7c166cffa29616d89984bccdbf36e7d91e6696457374eb3"`
[INFO] [stderr]    Compiling mscorlib_safe_derive v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:56:21
[INFO] [stderr]    |
[INFO] [stderr] 56 |                 let mut expanded = quote! {
[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 0.50s
[INFO] running `"docker" "inspect" "e7529da464c56daae7c166cffa29616d89984bccdbf36e7d91e6696457374eb3"`
[INFO] running `"docker" "rm" "-f" "e7529da464c56daae7c166cffa29616d89984bccdbf36e7d91e6696457374eb3"`
[INFO] [stdout] e7529da464c56daae7c166cffa29616d89984bccdbf36e7d91e6696457374eb3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/mscorlib_safe_derive/0.1.3:/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] 00311d6b475666a4933466b829d3c8dce256dde8a5b621a4e0c4301fe0fd826a
[INFO] running `"docker" "start" "-a" "00311d6b475666a4933466b829d3c8dce256dde8a5b621a4e0c4301fe0fd826a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mscorlib_safe_derive-7942c5817c04e793
[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] [stderr]    Doc-tests mscorlib_safe_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" "00311d6b475666a4933466b829d3c8dce256dde8a5b621a4e0c4301fe0fd826a"`
[INFO] running `"docker" "rm" "-f" "00311d6b475666a4933466b829d3c8dce256dde8a5b621a4e0c4301fe0fd826a"`
[INFO] [stdout] 00311d6b475666a4933466b829d3c8dce256dde8a5b621a4e0c4301fe0fd826a