[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-1.37-6/sources/1.36.0/reg/mscorlib_safe_derive/0.1.3
[INFO] extracting crate mscorlib_safe_derive 0.1.3 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mscorlib_safe_derive/0.1.3
[INFO] validating manifest of mscorlib_safe_derive-0.1.3 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mscorlib_safe_derive-0.1.3 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/reg/mscorlib_safe_derive/0.1.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mscorlib_safe_derive-0.1.3 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] d96f9f2244c6fbd2757162ce963717ac285c673da68e38ffbb291cc4cb731fb6
[INFO] running `"docker" "start" "-a" "d96f9f2244c6fbd2757162ce963717ac285c673da68e38ffbb291cc4cb731fb6"`
[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 1.00s
[INFO] running `"docker" "inspect" "d96f9f2244c6fbd2757162ce963717ac285c673da68e38ffbb291cc4cb731fb6"`
[INFO] running `"docker" "rm" "-f" "d96f9f2244c6fbd2757162ce963717ac285c673da68e38ffbb291cc4cb731fb6"`
[INFO] [stdout] d96f9f2244c6fbd2757162ce963717ac285c673da68e38ffbb291cc4cb731fb6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] e8555fccc8488fe361b3968f4f4f19b04932d91decc4da882b2e6c920b37ae9d
[INFO] running `"docker" "start" "-a" "e8555fccc8488fe361b3968f4f4f19b04932d91decc4da882b2e6c920b37ae9d"`
[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 0.36s
[INFO] running `"docker" "inspect" "e8555fccc8488fe361b3968f4f4f19b04932d91decc4da882b2e6c920b37ae9d"`
[INFO] running `"docker" "rm" "-f" "e8555fccc8488fe361b3968f4f4f19b04932d91decc4da882b2e6c920b37ae9d"`
[INFO] [stdout] e8555fccc8488fe361b3968f4f4f19b04932d91decc4da882b2e6c920b37ae9d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 4343f4570150d8ba78e71c23b60bd1dce17639cd62ab6c1fca1ff9cd5e561a52
[INFO] running `"docker" "start" "-a" "4343f4570150d8ba78e71c23b60bd1dce17639cd62ab6c1fca1ff9cd5e561a52"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mscorlib_safe_derive-2a69d6ce8aa1d467
[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" "4343f4570150d8ba78e71c23b60bd1dce17639cd62ab6c1fca1ff9cd5e561a52"`
[INFO] running `"docker" "rm" "-f" "4343f4570150d8ba78e71c23b60bd1dce17639cd62ab6c1fca1ff9cd5e561a52"`
[INFO] [stdout] 4343f4570150d8ba78e71c23b60bd1dce17639cd62ab6c1fca1ff9cd5e561a52