[INFO] crate mft 0.4.4 is already in cache
[INFO] checking mft-0.4.4 against try#00e4530a79c42b21a6ca2ac1edb597c90d21f89f for pr-64672
[INFO] extracting crate mft 0.4.4 into work/builds/worker-2/source
[INFO] validating manifest of crates.io crate mft 0.4.4 on toolchain 00e4530a79c42b21a6ca2ac1edb597c90d21f89f
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mft 0.4.4
[INFO] finished tweaking crates.io crate mft 0.4.4
[INFO] tweaked toml for crates.io crate mft 0.4.4 written to work/builds/worker-2/source/Cargo.toml
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/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=forbid" "-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" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0f2f5d4ae65199e44e26594430104cb0678e6fe081d42c6d631c469b4114d1fd
[INFO] running `"docker" "start" "-a" "0f2f5d4ae65199e44e26594430104cb0678e6fe081d42c6d631c469b4114d1fd"`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling unindent v0.1.5
[INFO] [stderr]     Checking lru v0.1.17
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]    Compiling snafu-derive v0.5.0
[INFO] [stderr]    Compiling snafu-derive v0.4.4
[INFO] [stderr]     Checking console v0.9.0
[INFO] [stderr]     Checking rexpect v0.3.0
[INFO] [stderr] error[E0658]: auto traits are experimental and possibly buggy
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lru-0.1.17/src/lib.rs:110:1
[INFO] [stderr]     |
[INFO] [stderr] 110 | pub auto trait NotKeyRef {}
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/13231
[INFO] [stderr]     = help: add `#![feature(optin_builtin_traits)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lru-0.1.17/src/lib.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 | impl<K> !NotKeyRef for KeyRef<K> {}
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/13231
[INFO] [stderr]     = help: add `#![feature(optin_builtin_traits)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: could not compile `lru`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "0f2f5d4ae65199e44e26594430104cb0678e6fe081d42c6d631c469b4114d1fd"`
[INFO] running `"docker" "rm" "-f" "0f2f5d4ae65199e44e26594430104cb0678e6fe081d42c6d631c469b4114d1fd"`
[INFO] [stdout] 0f2f5d4ae65199e44e26594430104cb0678e6fe081d42c6d631c469b4114d1fd