[INFO] fetching crate rustfmt-nightly 1.4.20...
[INFO] checking rustfmt-nightly-1.4.20 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate rustfmt-nightly 1.4.20 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate rustfmt-nightly 1.4.20 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustfmt-nightly 1.4.20
[INFO] finished tweaking crates.io crate rustfmt-nightly 1.4.20
[INFO] tweaked toml for crates.io crate rustfmt-nightly 1.4.20 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate rustfmt-nightly 1.4.20 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt v0.3.11
[INFO] [stderr]   Downloaded rustc-rayon v0.3.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_expand v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v671.0.0
[INFO] [stderr]   Downloaded proc-macro-error-attr v0.4.11
[INFO] [stderr]   Downloaded diff v0.1.11
[INFO] [stderr]   Downloaded packed_simd v0.3.3
[INFO] [stderr]   Downloaded anyhow v1.0.25
[INFO] [stderr]   Downloaded bytecount v0.6.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_passes v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_attr v671.0.0
[INFO] [stderr]   Downloaded toml v0.5.3
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_session v671.0.0
[INFO] [stderr]   Downloaded thiserror-impl v1.0.6
[INFO] [stderr]   Downloaded thiserror v1.0.6
[INFO] [stderr]   Downloaded stacker v0.1.9
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v671.0.0
[INFO] [stderr]   Downloaded rustc-rayon-core v0.3.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_parse v671.0.0
[INFO] [stderr]   Downloaded psm v0.1.8
[INFO] [stderr]   Downloaded proc-macro-error v0.4.11
[INFO] [stderr]   Downloaded structopt-derive v0.4.4
[INFO] [stderr]   Downloaded rustc-ap-rustc_feature v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_fs_util v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v671.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c999b29171a1aabc66e65e584af993a6824778cf1996a0f2c0362f5b1a74707
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7c999b29171a1aabc66e65e584af993a6824778cf1996a0f2c0362f5b1a74707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c999b29171a1aabc66e65e584af993a6824778cf1996a0f2c0362f5b1a74707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c999b29171a1aabc66e65e584af993a6824778cf1996a0f2c0362f5b1a74707", kill_on_drop: false }`
[INFO] [stdout] 7c999b29171a1aabc66e65e584af993a6824778cf1996a0f2c0362f5b1a74707
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4dbde2c31083f86992282bf1b63a362b7ab0d1877581ff694cccd51ead7553b1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4dbde2c31083f86992282bf1b63a362b7ab0d1877581ff694cccd51ead7553b1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling cc v1.0.46
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking rustc-ap-rustc_graphviz v671.0.0
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v671.0.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling anyhow v1.0.25
[INFO] [stderr]    Compiling rustfmt-nightly v1.4.20 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rustc-workspace-hack v1.0.0
[INFO] [stderr]     Checking diff v0.1.11
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stdout] error[E0658]: trait bounds other than `Sized` on const fn parameters are unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.3.4/src/mutex.rs:106:6
[INFO] [stdout]     |
[INFO] [stdout] 106 | impl<R: RawMutex, T> Mutex<R, T> {
[INFO] [stdout]     |      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]     = help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: trait bounds other than `Sized` on const fn parameters are unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.3.4/src/remutex.rs:162:6
[INFO] [stdout]     |
[INFO] [stdout] 162 | impl<R: RawMutex, G: GetThreadId, T> ReentrantMutex<R, G, T> {
[INFO] [stdout]     |      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]     = help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: trait bounds other than `Sized` on const fn parameters are unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.3.4/src/remutex.rs:162:19
[INFO] [stdout]     |
[INFO] [stdout] 162 | impl<R: RawMutex, G: GetThreadId, T> ReentrantMutex<R, G, T> {
[INFO] [stdout]     |                   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]     = help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: trait bounds other than `Sized` on const fn parameters are unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.3.4/src/rwlock.rs:271:6
[INFO] [stdout]     |
[INFO] [stdout] 271 | impl<R: RawRwLock, T> RwLock<R, T> {
[INFO] [stdout]     |      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]     = help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lock_api`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4dbde2c31083f86992282bf1b63a362b7ab0d1877581ff694cccd51ead7553b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dbde2c31083f86992282bf1b63a362b7ab0d1877581ff694cccd51ead7553b1", kill_on_drop: false }`
[INFO] [stdout] 4dbde2c31083f86992282bf1b63a362b7ab0d1877581ff694cccd51ead7553b1