[INFO] crate attr 0.1.0 is already in cache
[INFO] extracting crate attr 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/attr/0.1.0
[INFO] extracting crate attr 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/attr/0.1.0
[INFO] validating manifest of attr-0.1.0 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 attr-0.1.0 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 attr-0.1.0
[INFO] finished frobbing attr-0.1.0
[INFO] frobbed toml for attr-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/attr/0.1.0/Cargo.toml
[INFO] started frobbing attr-0.1.0
[INFO] finished frobbing attr-0.1.0
[INFO] frobbed toml for attr-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/attr/0.1.0/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 attr-0.1.0 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/attr/0.1.0:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 58741a1f9e48f9ef0bdebe77dff13b24d1d4b73d4c9c77b32d81ae6f2c122563
[INFO] running `"docker" "start" "-a" "58741a1f9e48f9ef0bdebe77dff13b24d1d4b73d4c9c77b32d81ae6f2c122563"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling attr v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `"docker" "inspect" "58741a1f9e48f9ef0bdebe77dff13b24d1d4b73d4c9c77b32d81ae6f2c122563"`
[INFO] running `"docker" "rm" "-f" "58741a1f9e48f9ef0bdebe77dff13b24d1d4b73d4c9c77b32d81ae6f2c122563"`
[INFO] [stdout] 58741a1f9e48f9ef0bdebe77dff13b24d1d4b73d4c9c77b32d81ae6f2c122563
[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/attr/0.1.0:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 082c2928c4e8c37c952b0510f033e93494709f967596d5cedf7bb437b5fd5bcb
[INFO] running `"docker" "start" "-a" "082c2928c4e8c37c952b0510f033e93494709f967596d5cedf7bb437b5fd5bcb"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling serde_json v0.8.6
[INFO] [stderr]    Compiling attr v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/simple.rs:108:9
[INFO] [stderr]     |
[INFO] [stderr] 108 |     let mut batz = Bar::attrs().batz.get(&mut f);
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/nested.rs:252:13
[INFO] [stderr]     |
[INFO] [stderr] 252 |         let mut x: &mut i32 = foo::Numbers.at(&mut f, 1);
[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 2.33s
[INFO] running `"docker" "inspect" "082c2928c4e8c37c952b0510f033e93494709f967596d5cedf7bb437b5fd5bcb"`
[INFO] running `"docker" "rm" "-f" "082c2928c4e8c37c952b0510f033e93494709f967596d5cedf7bb437b5fd5bcb"`
[INFO] [stdout] 082c2928c4e8c37c952b0510f033e93494709f967596d5cedf7bb437b5fd5bcb
[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/attr/0.1.0:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] a89e5cce93e9975b89dd379f61706e5be2ae69d880cd50315ab0c3ffdfce8798
[INFO] running `"docker" "start" "-a" "a89e5cce93e9975b89dd379f61706e5be2ae69d880cd50315ab0c3ffdfce8798"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/attr-ff5bdd6650e2cccd
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mapping-866f84fef298f105
[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 3 tests
[INFO] [stdout] test test_access ... ok
[INFO] [stdout] test test_mapped ... ok
[INFO] [stdout] test test_complex_mapped ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/nested-e269d05cd5cc340f
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test nested_mutable ... ok
[INFO] [stdout] test nested_vec ... ok
[INFO] [stdout] test nested_access ... ok
[INFO] [stdout] test nested_vec_mutable ... ok
[INFO] [stdout] test simple_mutable ... ok
[INFO] [stdout] test nested_filter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/serde_tests-50b2fb256e72bbdc
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_combine ... ok
[INFO] [stdout] test test_multiple_attr ... ok
[INFO] [stdout] test test_attr ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/simple-1b597356335335ad
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test simple_access ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests attr
[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" "a89e5cce93e9975b89dd379f61706e5be2ae69d880cd50315ab0c3ffdfce8798"`
[INFO] running `"docker" "rm" "-f" "a89e5cce93e9975b89dd379f61706e5be2ae69d880cd50315ab0c3ffdfce8798"`
[INFO] [stdout] a89e5cce93e9975b89dd379f61706e5be2ae69d880cd50315ab0c3ffdfce8798