[INFO] fetching crate cp437-tools 0.9.0...
[INFO] testing cp437-tools-0.9.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate cp437-tools 0.9.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate cp437-tools 0.9.0
[INFO] finished tweaking crates.io crate cp437-tools 0.9.0
[INFO] tweaked toml for crates.io crate cp437-tools 0.9.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cp437-tools 0.9.0 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 cp437-tools 0.9.0 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 svg v0.18.0
[INFO] [stderr]   Downloaded file_diff v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 39aa93e79e6a3b386e2c85919ebeae48adb9ea1b3cbd52da7d7ea0156b72f291
[INFO] running `Command { std: "docker" "start" "-a" "39aa93e79e6a3b386e2c85919ebeae48adb9ea1b3cbd52da7d7ea0156b72f291", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39aa93e79e6a3b386e2c85919ebeae48adb9ea1b3cbd52da7d7ea0156b72f291", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39aa93e79e6a3b386e2c85919ebeae48adb9ea1b3cbd52da7d7ea0156b72f291", kill_on_drop: false }`
[INFO] [stdout] 39aa93e79e6a3b386e2c85919ebeae48adb9ea1b3cbd52da7d7ea0156b72f291
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] e4439cb16d1d2b7757f3c6e8be5bf35b4b190169d6725193ee431b6d3e11ea09
[INFO] running `Command { std: "docker" "start" "-a" "e4439cb16d1d2b7757f3c6e8be5bf35b4b190169d6725193ee431b6d3e11ea09", kill_on_drop: false }`
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling bstr v1.12.0
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling option-ext v0.2.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling dirs-sys v0.5.0
[INFO] [stderr]    Compiling dirs v6.0.0
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]    Compiling shellexpand v3.1.1
[INFO] [stderr]    Compiling indoc v2.0.6
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling cp437-tools v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling flate2 v1.1.2
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling fdeflate v0.3.7
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling png v0.17.16
[INFO] [stderr]    Compiling humansize v2.1.3
[INFO] [stderr]    Compiling chrono v0.4.41
[INFO] [stderr]    Compiling ttf-parser v0.25.1
[INFO] [stderr]    Compiling svg v0.18.0
[INFO] [stderr]    Compiling globset v0.4.16
[INFO] [stderr]    Compiling embed-doc-image v0.1.4
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling rust-embed-utils v8.7.2
[INFO] [stderr]    Compiling rust-embed-impl v8.7.2
[INFO] [stderr]    Compiling rust-embed v8.7.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:97:35
[INFO] [stdout]    |
[INFO] [stdout] 97 | #![cfg_attr(feature = "binaries", feature(try_trait_v2))] // TODO https://github.com/rust-lang/rust/issues/84277
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cp437-tools` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e4439cb16d1d2b7757f3c6e8be5bf35b4b190169d6725193ee431b6d3e11ea09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4439cb16d1d2b7757f3c6e8be5bf35b4b190169d6725193ee431b6d3e11ea09", kill_on_drop: false }`
[INFO] [stdout] e4439cb16d1d2b7757f3c6e8be5bf35b4b190169d6725193ee431b6d3e11ea09