[INFO] fetching crate rsfmt 1.60.0...
[INFO] testing rsfmt-1.60.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate rsfmt 1.60.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate rsfmt 1.60.0
[INFO] finished tweaking crates.io crate rsfmt 1.60.0
[INFO] tweaked toml for crates.io crate rsfmt 1.60.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rsfmt 1.60.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rsfmt 1.60.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v727.0.0
[INFO] [stderr]   Downloaded memmap2 v0.2.3
[INFO] [stderr]   Downloaded rustc-ap-rustc_fs_util v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v727.0.0
[INFO] [stderr]   Downloaded unicode-segmentation v1.8.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_feature v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_session v727.0.0
[INFO] [stderr]   Downloaded rustc-rayon-core v0.3.2
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lint_defs v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_parse v727.0.0
[INFO] [stderr]   Downloaded rustc-rayon v0.3.2
[INFO] [stderr]   Downloaded libc v0.2.116
[INFO] [stderr]   Downloaded measureme v9.1.2
[INFO] [stderr]   Downloaded lock_api v0.4.6
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v727.0.0
[INFO] [stderr]   Downloaded jobserver v0.1.24
[INFO] [stderr]   Downloaded perf-event-open-sys v1.0.1
[INFO] [stderr]   Downloaded psm v0.1.16
[INFO] [stderr]   Downloaded stacker v0.1.14
[INFO] [stderr]   Downloaded fastrand v1.7.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v727.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dcf8001e6eac7313d7ed6cd7f154a33f6c4daf930fe8afb987007bf395ac2004
[INFO] running `Command { std: "docker" "start" "-a" "dcf8001e6eac7313d7ed6cd7f154a33f6c4daf930fe8afb987007bf395ac2004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcf8001e6eac7313d7ed6cd7f154a33f6c4daf930fe8afb987007bf395ac2004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcf8001e6eac7313d7ed6cd7f154a33f6c4daf930fe8afb987007bf395ac2004", kill_on_drop: false }`
[INFO] [stdout] dcf8001e6eac7313d7ed6cd7f154a33f6c4daf930fe8afb987007bf395ac2004
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0381f6788af0b769f1cc49a3069ad381b8f85b9f4dd99116be4de02847482d3
[INFO] running `Command { std: "docker" "start" "-a" "d0381f6788af0b769f1cc49a3069ad381b8f85b9f4dd99116be4de02847482d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.116
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling crossbeam-utils v0.8.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.6
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.2
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling tracing-core v0.1.21
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/smallvec-1.8.0/src/lib.rs:83:37
[INFO] [stdout]    |
[INFO] [stdout] 83 | #![cfg_attr(feature = "may_dangle", feature(dropck_eyepatch))]
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling rustc-ap-rustc_graphviz v727.0.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rustc-ap-rustc_graphviz-727.0.0/src/lib.rs:278:1
[INFO] [stdout]     |
[INFO] [stdout] 278 | #![feature(nll)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]     |
[INFO] [stdout]     = help: the feature `nll` has been stable since `1.63.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_lexer v727.0.0
[INFO] [stderr]    Compiling annotate-snippets v0.8.0
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling tinyvec v1.5.1
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smallvec` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-ap-rustc_graphviz` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d0381f6788af0b769f1cc49a3069ad381b8f85b9f4dd99116be4de02847482d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0381f6788af0b769f1cc49a3069ad381b8f85b9f4dd99116be4de02847482d3", kill_on_drop: false }`
[INFO] [stdout] d0381f6788af0b769f1cc49a3069ad381b8f85b9f4dd99116be4de02847482d3