[INFO] crate rustc-ap-syntax 539.0.0 is already in cache
[INFO] extracting crate rustc-ap-syntax 539.0.0 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/rustc-ap-syntax/539.0.0
[INFO] extracting crate rustc-ap-syntax 539.0.0 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/rustc-ap-syntax/539.0.0
[INFO] validating manifest of rustc-ap-syntax-539.0.0 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rustc-ap-syntax-539.0.0 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rustc-ap-syntax-539.0.0
[INFO] finished frobbing rustc-ap-syntax-539.0.0
[INFO] frobbed toml for rustc-ap-syntax-539.0.0 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/rustc-ap-syntax/539.0.0/Cargo.toml
[INFO] started frobbing rustc-ap-syntax-539.0.0
[INFO] finished frobbing rustc-ap-syntax-539.0.0
[INFO] frobbed toml for rustc-ap-syntax-539.0.0 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/rustc-ap-syntax/539.0.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rustc-ap-syntax-539.0.0 against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-6/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/rustc-ap-syntax/539.0.0:/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=forbid" "-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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c97d0ddbae1414bf8cf5df4b76ff0542cec08141aeba6f97c6145130c220855f
[INFO] running `"docker" "start" "-a" "c97d0ddbae1414bf8cf5df4b76ff0542cec08141aeba6f97c6145130c220855f"`
[INFO] [stderr]    Compiling rustc-rayon-core v0.2.0
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling rustc-rayon v0.2.0
[INFO] [stderr]     Checking rustc-ap-graphviz v539.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_target v539.0.0
[INFO] [stderr]     Checking annotate-snippets v0.5.0
[INFO] [stderr]    Compiling rustc-ap-syntax v539.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v539.0.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking jobserver v0.1.16
[INFO] [stderr]     Checking ena v0.13.0
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v539.0.0
[INFO] [stderr]     Checking rustc-ap-serialize v539.0.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking rustc-ap-rustc_data_structures v539.0.0
[INFO] [stderr] error[E0658]: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-539.0.0/bit_set.rs:1269:3
[INFO] [stderr]      |
[INFO] [stderr] 1269 | #[bench]
[INFO] [stderr]      |   ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]      = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-539.0.0/bit_set.rs:1284:3
[INFO] [stderr]      |
[INFO] [stderr] 1284 | #[bench]
[INFO] [stderr]      |   ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]      = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-539.0.0/bit_set.rs:1302:3
[INFO] [stderr]      |
[INFO] [stderr] 1302 | #[bench]
[INFO] [stderr]      |   ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]      = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-539.0.0/bit_set.rs:1320:3
[INFO] [stderr]      |
[INFO] [stderr] 1320 | #[bench]
[INFO] [stderr]      |   ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]      = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-539.0.0/bit_set.rs:1335:3
[INFO] [stderr]      |
[INFO] [stderr] 1335 | #[bench]
[INFO] [stderr]      |   ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr]      = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: Could not compile `rustc-ap-rustc_data_structures`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c97d0ddbae1414bf8cf5df4b76ff0542cec08141aeba6f97c6145130c220855f"`
[INFO] running `"docker" "rm" "-f" "c97d0ddbae1414bf8cf5df4b76ff0542cec08141aeba6f97c6145130c220855f"`
[INFO] [stdout] c97d0ddbae1414bf8cf5df4b76ff0542cec08141aeba6f97c6145130c220855f