[INFO] crate rustfmt-nightly 1.0.0 is already in cache
[INFO] extracting crate rustfmt-nightly 1.0.0 into work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/reg/rustfmt-nightly/1.0.0
[INFO] extracting crate rustfmt-nightly 1.0.0 into work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/rustfmt-nightly/1.0.0
[INFO] validating manifest of rustfmt-nightly-1.0.0 on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rustfmt-nightly-1.0.0 on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rustfmt-nightly-1.0.0
[INFO] finished frobbing rustfmt-nightly-1.0.0
[INFO] frobbed toml for rustfmt-nightly-1.0.0 written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/reg/rustfmt-nightly/1.0.0/Cargo.toml
[INFO] started frobbing rustfmt-nightly-1.0.0
[INFO] finished frobbing rustfmt-nightly-1.0.0
[INFO] frobbed toml for rustfmt-nightly-1.0.0 written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/rustfmt-nightly/1.0.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rustfmt-nightly-1.0.0 against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-4/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/rustfmt-nightly/1.0.0:/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2036e538f4691f7d4f723e5c87a73ca20813929f231e5c245b7555a6be4c9e34
[INFO] running `"docker" "start" "-a" "2036e538f4691f7d4f723e5c87a73ca20813929f231e5c245b7555a6be4c9e34"`
[INFO] [stderr]    Compiling rustc-rayon-core v0.1.2
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]    Compiling rustc-rayon v0.1.2
[INFO] [stderr]     Checking rustc-ap-graphviz v297.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_target v297.0.0
[INFO] [stderr]    Compiling simd v0.2.4
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]    Compiling rustc-ap-syntax v297.0.0
[INFO] [stderr]    Compiling rustfmt-nightly v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0277]: the trait bound `std::borrow::Cow<'_, str>: std::convert::From<core::str::EscapeDefault<'_>>` is not satisfied
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-graphviz-297.0.0/lib.rs:551:44
[INFO] [stderr]     |
[INFO] [stderr] 551 |                     (&*s).escape_default().into()
[INFO] [stderr]     |                                            ^^^^ the trait `std::convert::From<core::str::EscapeDefault<'_>>` is not implemented for `std::borrow::Cow<'_, str>`
[INFO] [stderr]     |
[INFO] [stderr]     = help: the following implementations were found:
[INFO] [stderr]               <std::borrow::Cow<'a, [T]> as std::convert::From<&'a [T]>>
[INFO] [stderr]               <std::borrow::Cow<'a, [T]> as std::convert::From<&'a std::vec::Vec<T>>>
[INFO] [stderr]               <std::borrow::Cow<'a, [T]> as std::convert::From<std::vec::Vec<T>>>
[INFO] [stderr]               <std::borrow::Cow<'a, std::ffi::CStr> as std::convert::From<&'a std::ffi::CStr>>
[INFO] [stderr]             and 11 others
[INFO] [stderr]     = note: required because of the requirements on the impl of `std::convert::Into<std::borrow::Cow<'_, str>>` for `core::str::EscapeDefault<'_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `rustc-ap-graphviz`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]   --> build.rs:39:49
[INFO] [stderr]    |
[INFO] [stderr] 39 |             format!("{} ({} {})", channel, hash.trim_right(), date)
[INFO] [stderr]    |                                                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2036e538f4691f7d4f723e5c87a73ca20813929f231e5c245b7555a6be4c9e34"`
[INFO] running `"docker" "rm" "-f" "2036e538f4691f7d4f723e5c87a73ca20813929f231e5c245b7555a6be4c9e34"`
[INFO] [stdout] 2036e538f4691f7d4f723e5c87a73ca20813929f231e5c245b7555a6be4c9e34