[INFO] fetching crate fimg 0.4.48...
[INFO] testing fimg-0.4.48 against 1.90.0 for beta-1.91-3
[INFO] extracting crate fimg 0.4.48 into /workspace/builds/worker-6-tc1/source
[INFO] removed /workspace/builds/worker-6-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate fimg 0.4.48
[INFO] finished tweaking crates.io crate fimg 0.4.48
[INFO] tweaked toml for crates.io crate fimg 0.4.48 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fimg 0.4.48 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 fimg 0.4.48 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 qwant v1.0.1
[INFO] [stderr]   Downloaded imgref-iter v0.4.0
[INFO] [stderr]   Downloaded vecto v0.1.1
[INFO] [stderr]   Downloaded umath v0.0.7
[INFO] [stderr]   Downloaded array_chunks v1.0.0
[INFO] [stderr]   Downloaded lower-macros v0.2.8
[INFO] [stderr]   Downloaded lower v0.2.0
[INFO] [stderr]   Downloaded slur v0.1.0
[INFO] [stderr]   Downloaded hinted v0.0.2
[INFO] [stderr]   Downloaded atools v0.1.6
[INFO] [stderr]   Downloaded clipline v0.1.2
[INFO] [stderr]   Downloaded windows-core v0.53.0
[INFO] [stderr]   Downloaded mattr v0.0.2
[INFO] [stderr]   Downloaded fer v0.1.1
[INFO] [stderr]   Downloaded fontdue v0.7.3
[INFO] [stderr]   Downloaded wgpu-hal v0.19.5
[INFO] [stderr]   Downloaded windows v0.53.0
[INFO] [stderr]   Downloaded minifb v0.25.0
[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] 0a5d0e3ec0fc6c4b7a01b810d4ec663a25ddf9b4c7054ff31964ec2b2c65338e
[INFO] running `Command { std: "docker" "start" "-a" "0a5d0e3ec0fc6c4b7a01b810d4ec663a25ddf9b4c7054ff31964ec2b2c65338e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a5d0e3ec0fc6c4b7a01b810d4ec663a25ddf9b4c7054ff31964ec2b2c65338e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a5d0e3ec0fc6c4b7a01b810d4ec663a25ddf9b4c7054ff31964ec2b2c65338e", kill_on_drop: false }`
[INFO] [stdout] 0a5d0e3ec0fc6c4b7a01b810d4ec663a25ddf9b4c7054ff31964ec2b2c65338e
[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] d0b4a430f8a6a9043ed67a80df52492dd9aae412b2048351068b3b94bde83235
[INFO] running `Command { std: "docker" "start" "-a" "d0b4a430f8a6a9043ed67a80df52492dd9aae412b2048351068b3b94bde83235", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling adler2 v2.0.0
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling atools v0.1.6
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]    Compiling umath v0.0.7
[INFO] [stderr]    Compiling clipline v0.1.2
[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/umath-0.0.7/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(core_intrinsics)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/atools-0.1.6/src/lib.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout]  4 | / #![feature(
[INFO] [stdout]  5 | |     adt_const_params,
[INFO] [stdout]  6 | |     generic_const_exprs,
[INFO] [stdout]  7 | |     core_intrinsics,
[INFO] [stdout] ...  |
[INFO] [stdout] 12 | |     iter_map_windows
[INFO] [stdout] 13 | | )]
[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 `umath` (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 `atools` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d0b4a430f8a6a9043ed67a80df52492dd9aae412b2048351068b3b94bde83235", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0b4a430f8a6a9043ed67a80df52492dd9aae412b2048351068b3b94bde83235", kill_on_drop: false }`
[INFO] [stdout] d0b4a430f8a6a9043ed67a80df52492dd9aae412b2048351068b3b94bde83235