[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] 4389a4ce49e737915af1f1b27b96b05598a4e388
[INFO] testing rust-lang-nursery/rustfmt against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2Frustfmt" "/workspace/builds/worker-93/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-93/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-lang-nursery/rustfmt on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-93/source/rust-toolchain
[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-93/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" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cargo_metadata v0.14.0
[INFO] [stderr]   Downloaded structopt v0.3.11
[INFO] [stderr]   Downloaded yansi-term v0.1.2
[INFO] [stderr]   Downloaded anyhow v1.0.25
[INFO] [stderr]   Downloaded toml v0.5.3
[INFO] [stderr]   Downloaded rustc-workspace-hack v1.0.0
[INFO] [stderr]   Downloaded proc-macro-error-attr v0.4.11
[INFO] [stderr]   Downloaded proc-macro-error v0.4.11
[INFO] [stderr]   Downloaded env_logger v0.8.1
[INFO] [stderr]   Downloaded thiserror-impl v1.0.6
[INFO] [stderr]   Downloaded thiserror v1.0.6
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[INFO] [stderr]   Downloaded structopt-derive v0.4.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 45365d6cb546d28ec90550a2bf4bbf840ecdcd4f9dea8f9ef129d948bc60e4a4
[INFO] running `Command { std: "docker" "start" "-a" "45365d6cb546d28ec90550a2bf4bbf840ecdcd4f9dea8f9ef129d948bc60e4a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45365d6cb546d28ec90550a2bf4bbf840ecdcd4f9dea8f9ef129d948bc60e4a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45365d6cb546d28ec90550a2bf4bbf840ecdcd4f9dea8f9ef129d948bc60e4a4", kill_on_drop: false }`
[INFO] [stdout] 45365d6cb546d28ec90550a2bf4bbf840ecdcd4f9dea8f9ef129d948bc60e4a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 485f467953f9d5e2e772741ae3d1c69dc4d2d3e094a642ed53d417e1d2f50c84
[INFO] running `Command { std: "docker" "start" "-a" "485f467953f9d5e2e772741ae3d1c69dc4d2d3e094a642ed53d417e1d2f50c84", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling serde v1.0.126
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[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling anyhow v1.0.25
[INFO] [stderr]    Compiling fnv v1.0.6
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[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling yansi-term v0.1.2
[INFO] [stderr]    Compiling rustfmt-nightly v1.4.38 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]    Compiling rustc-workspace-hack v1.0.0
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[INFO] [stderr]    Compiling bytecount v0.6.2
[INFO] [stderr]    Compiling unicode_categories v0.1.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling annotate-snippets v0.8.0
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling walkdir v2.2.9
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.11
[INFO] [stderr]    Compiling proc-macro-error v0.4.11
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling bstr v0.2.8
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling term v0.6.1
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling globset v0.4.6
[INFO] [stderr]    Compiling env_logger v0.8.1
[INFO] [stderr]    Compiling ignore v0.4.17
[INFO] [stderr]    Compiling thiserror-impl v1.0.6
[INFO] [stderr]    Compiling rustfmt-config_proc_macro v0.2.0 (/opt/rustwide/workdir/config_proc_macro)
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling thiserror v1.0.6
[INFO] [stderr]    Compiling structopt-derive v0.4.4
[INFO] [stderr]    Compiling structopt v0.3.11
[INFO] [stderr]    Compiling cargo-platform v0.1.1
[INFO] [stderr]    Compiling toml v0.5.3
[INFO] [stderr]    Compiling cargo_metadata v0.14.0
[INFO] [stdout] error[E0463]: can't find crate for `rustc_ast`
[INFO] [stdout]   --> src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | extern crate rustc_ast;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustfmt-nightly` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "485f467953f9d5e2e772741ae3d1c69dc4d2d3e094a642ed53d417e1d2f50c84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "485f467953f9d5e2e772741ae3d1c69dc4d2d3e094a642ed53d417e1d2f50c84", kill_on_drop: false }`
[INFO] [stdout] 485f467953f9d5e2e772741ae3d1c69dc4d2d3e094a642ed53d417e1d2f50c84