[INFO] fetching crate mindus 5.0.37...
[INFO] testing mindus-5.0.37 against 1.90.0 for beta-1.91-3
[INFO] extracting crate mindus 5.0.37 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate mindus 5.0.37
[INFO] finished tweaking crates.io crate mindus 5.0.37
[INFO] tweaked toml for crates.io crate mindus 5.0.37 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mindus 5.0.37 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 mindus 5.0.37 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 amap v0.1.2
[INFO] [stderr]   Downloaded winapi-util v0.1.10
[INFO] [stderr]   Downloaded car v0.1.3
[INFO] [stderr]   Downloaded color-hex v0.2.0
[INFO] [stderr]   Downloaded array_chunks v1.0.0
[INFO] [stderr]   Downloaded atools v0.1.7
[INFO] [stderr]   Downloaded hinted v0.0.2
[INFO] [stderr]   Downloaded imgref-iter v0.4.0
[INFO] [stderr]   Downloaded slur v0.1.0
[INFO] [stderr]   Downloaded lower v0.2.0
[INFO] [stderr]   Downloaded strconv v0.1.0
[INFO] [stderr]   Downloaded bobbin-bits v0.1.1
[INFO] [stderr]   Downloaded clipline v0.1.2
[INFO] [stderr]   Downloaded lower-macros v0.2.8
[INFO] [stderr]   Downloaded umath v0.0.7
[INFO] [stderr]   Downloaded implicit-fn v0.1.0
[INFO] [stderr]   Downloaded vecto v0.1.1
[INFO] [stderr]   Downloaded mattr v0.0.2
[INFO] [stderr]   Downloaded fimg v0.4.47
[INFO] [stderr]   Downloaded fer v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f2912e2edbf7a78eac39e860334e16f2f9ac3e4af255355a674ac2249080c2b7
[INFO] running `Command { std: "docker" "start" "-a" "f2912e2edbf7a78eac39e860334e16f2f9ac3e4af255355a674ac2249080c2b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2912e2edbf7a78eac39e860334e16f2f9ac3e4af255355a674ac2249080c2b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2912e2edbf7a78eac39e860334e16f2f9ac3e4af255355a674ac2249080c2b7", kill_on_drop: false }`
[INFO] [stdout] f2912e2edbf7a78eac39e860334e16f2f9ac3e4af255355a674ac2249080c2b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] df5ef79b317d7f273fbe4fbb736c1703bd0adf7c0e06809e96ef4a85633b6984
[INFO] running `Command { std: "docker" "start" "-a" "df5ef79b317d7f273fbe4fbb736c1703bd0adf7c0e06809e96ef4a85633b6984", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling imgref v1.11.0
[INFO] [stderr]    Compiling umath v0.0.7
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling hinted v0.0.2
[INFO] [stderr]    Compiling array_chunks v1.0.0
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling fdeflate v0.3.7
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling mattr v0.0.2
[INFO] [stderr]    Compiling atools v0.1.7
[INFO] [stderr]    Compiling fer v0.1.1
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling clipline v0.1.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling walkdir v2.5.0
[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/hinted-0.0.2/src/lib.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout]  3 | /     feature(
[INFO] [stdout]  4 | |         trusted_len,
[INFO] [stdout]  5 | |         trusted_fused,
[INFO] [stdout]  6 | |         min_specialization,
[INFO] [stdout] ...  |
[INFO] [stdout]  9 | |         doc_auto_cfg
[INFO] [stdout] 10 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[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/umath-0.0.7/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(core_intrinsics)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling imgref-iter v0.4.0
[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/atools-0.1.7/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] [stderr] error: could not compile `hinted` (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] [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] error: could not compile `atools` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "df5ef79b317d7f273fbe4fbb736c1703bd0adf7c0e06809e96ef4a85633b6984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df5ef79b317d7f273fbe4fbb736c1703bd0adf7c0e06809e96ef4a85633b6984", kill_on_drop: false }`
[INFO] [stdout] df5ef79b317d7f273fbe4fbb736c1703bd0adf7c0e06809e96ef4a85633b6984