[INFO] fetching crate rustfmt_fn 0.1.0...
[INFO] checking rustfmt_fn-0.1.0 against try#ff044a3d65d25a17c3e14c1530004e1540179ba7 for pr-78338
[INFO] extracting crate rustfmt_fn 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rustfmt_fn 0.1.0 on toolchain ff044a3d65d25a17c3e14c1530004e1540179ba7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustfmt_fn 0.1.0
[INFO] finished tweaking crates.io crate rustfmt_fn 0.1.0
[INFO] tweaked toml for crates.io crate rustfmt_fn 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustfmt-config_proc_macro v0.2.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_expand v677.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_passes v677.0.0
[INFO] [stderr]   Downloaded rustc-workspace-hack v1.0.0
[INFO] [stderr]   Downloaded rustfmt-nightly v1.4.21
[INFO] [stderr]   Downloaded rustc-ap-rustc_attr v677.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "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] a81f310a07a3f3907c2652122e041f72c7556ec880ef7ee7261f88b4c4b07576
[INFO] running `Command { std: "docker" "start" "-a" "a81f310a07a3f3907c2652122e041f72c7556ec880ef7ee7261f88b4c4b07576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a81f310a07a3f3907c2652122e041f72c7556ec880ef7ee7261f88b4c4b07576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a81f310a07a3f3907c2652122e041f72c7556ec880ef7ee7261f88b4c4b07576", kill_on_drop: false }`
[INFO] [stdout] a81f310a07a3f3907c2652122e041f72c7556ec880ef7ee7261f88b4c4b07576
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 702a142c8332a32c72b4374774e026707ec6ca5de9a0e91908d195f528039f89
[INFO] running `Command { std: "docker" "start" "-a" "702a142c8332a32c72b4374774e026707ec6ca5de9a0e91908d195f528039f89", kill_on_drop: false }`
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking rustc-ap-rustc_graphviz v677.0.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking annotate-snippets v0.8.0
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v677.0.0
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]    Compiling rustfmt-nightly v1.4.21
[INFO] [stderr]     Checking rustc-workspace-hack v1.0.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v677.0.0
[INFO] [stderr]     Checking annotate-snippets v0.6.1
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking rustc-ap-rustc_serialize v677.0.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v677.0.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling rustfmt-config_proc_macro v0.2.0
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking rustc-ap-rustc_index v677.0.0
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking cargo_metadata v0.8.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking measureme v0.7.1
[INFO] [stderr]     Checking rustc-ap-rustc_data_structures v677.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_arena v677.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_span v677.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_ast v677.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_target v677.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_errors v677.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_feature v677.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_ast_pretty v677.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_session v677.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_parse v677.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_attr v677.0.0
[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-677.0.0/src/builtin.rs:576:27
[INFO] [stdout]     |
[INFO] [stdout] 576 |             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-677.0.0/src/builtin.rs:578:48
[INFO] [stdout]     |
[INFO] [stdout] 578 |             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" "702a142c8332a32c72b4374774e026707ec6ca5de9a0e91908d195f528039f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "702a142c8332a32c72b4374774e026707ec6ca5de9a0e91908d195f528039f89", kill_on_drop: false }`
[INFO] [stdout] 702a142c8332a32c72b4374774e026707ec6ca5de9a0e91908d195f528039f89