[INFO] cloning repository https://github.com/rust-lang-nursery/rustfmt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-lang-nursery/rustfmt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2Frustfmt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2Frustfmt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b0fb901d4104c3e55447382f6cc89178cae76c2
[INFO] checking rust-lang-nursery/rustfmt against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2Frustfmt" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-lang-nursery/rustfmt on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rust-lang-nursery/rustfmt
[INFO] finished tweaking git repo https://github.com/rust-lang-nursery/rustfmt
[INFO] tweaked toml for git repo https://github.com/rust-lang-nursery/rustfmt written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-lang-nursery/rustfmt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6fd867659ab124b233644280e9b0681232b27327ebc491d465b22d8daed63b53
[INFO] running `Command { std: "docker" "start" "-a" "6fd867659ab124b233644280e9b0681232b27327ebc491d465b22d8daed63b53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fd867659ab124b233644280e9b0681232b27327ebc491d465b22d8daed63b53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fd867659ab124b233644280e9b0681232b27327ebc491d465b22d8daed63b53", kill_on_drop: false }`
[INFO] [stdout] 6fd867659ab124b233644280e9b0681232b27327ebc491d465b22d8daed63b53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 810137f08f6b4629433a1a27a19e6ecb899968fb3e1ecafab019b11e9e617894
[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" "810137f08f6b4629433a1a27a19e6ecb899968fb3e1ecafab019b11e9e617894", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.24
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking rustc-ap-rustc_graphviz v697.0.0
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking yansi-term v0.1.1
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v697.0.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]    Compiling rustfmt-nightly v2.0.0-rc.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking bytecount v0.6.0
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking dunce v1.0.0
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking instant v0.1.7
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking tracing-core v0.1.15
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking rustc-ap-rustc_arena v697.0.0
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v697.0.0
[INFO] [stderr]     Checking annotate-snippets v0.8.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.2
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking ena v0.14.0
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]    Compiling psm v0.1.8
[INFO] [stderr]    Compiling stacker v0.1.12
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking jobserver v0.1.21
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termize v0.1.1
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rustc-ap-rustc_serialize v697.0.0
[INFO] [stderr]     Checking measureme v9.0.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking rustc-rayon v0.3.0
[INFO] [stderr]     Checking sha2 v0.9.2
[INFO] [stderr]     Checking md-5 v0.9.1
[INFO] [stderr]     Checking sha-1 v0.9.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking ignore v0.4.15
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v697.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]    Compiling rustfmt-config_proc_macro v0.5.1 (/opt/rustwide/workdir/config_proc_macro)
[INFO] [stderr]     Checking thiserror v1.0.19
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking rustc-ap-rustc_index v697.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_data_structures v697.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_span v697.0.0
[INFO] [stderr]     Checking serde v1.0.110
[INFO] [stderr]     Checking rustc-ap-rustc_ast v697.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_target v697.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_feature v697.0.0
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking rustc-ap-rustc_lint_defs v697.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_ast_pretty v697.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_errors v697.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_session v697.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_attr v697.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_parse v697.0.0
[INFO] [stdout] error: environment variable `CFG_RELEASE_CHANNEL` not defined
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_attr-697.0.0/src/builtin.rs:565:27
[INFO] [stdout]     |
[INFO] [stdout] 565 |             let channel = env!("CFG_RELEASE_CHANNEL");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: environment variable `CFG_RELEASE` not defined
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_attr-697.0.0/src/builtin.rs:567:48
[INFO] [stdout]     |
[INFO] [stdout] 567 |             let rustc_version = Version::parse(env!("CFG_RELEASE")).unwrap();
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-ap-rustc_attr`
[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" "810137f08f6b4629433a1a27a19e6ecb899968fb3e1ecafab019b11e9e617894", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "810137f08f6b4629433a1a27a19e6ecb899968fb3e1ecafab019b11e9e617894", kill_on_drop: false }`
[INFO] [stdout] 810137f08f6b4629433a1a27a19e6ecb899968fb3e1ecafab019b11e9e617894