[INFO] fetching crate magc 0.1.1...
[INFO] testing magc-0.1.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate magc 0.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate magc 0.1.1
[INFO] finished tweaking crates.io crate magc 0.1.1
[INFO] tweaked toml for crates.io crate magc 0.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate magc 0.1.1 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 118 packages to latest compatible versions
[INFO] [stderr]       Adding clap v3.2.25 (available: v4.5.48)
[INFO] [stderr]       Adding env_logger v0.10.2 (available: v0.11.8)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded terminfo v0.8.0
[INFO] [stderr]   Downloaded smallstr v0.2.0
[INFO] [stderr]   Downloaded hex v0.3.2
[INFO] [stderr]   Downloaded strontium v0.6.0
[INFO] [stderr]   Downloaded mortal v0.2.4
[INFO] [stderr]   Downloaded linefeed v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 69751563a785962657c23f74920fcb0b0fa0101d4e3fc863bab633a045d06162
[INFO] running `Command { std: "docker" "start" "-a" "69751563a785962657c23f74920fcb0b0fa0101d4e3fc863bab633a045d06162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69751563a785962657c23f74920fcb0b0fa0101d4e3fc863bab633a045d06162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69751563a785962657c23f74920fcb0b0fa0101d4e3fc863bab633a045d06162", kill_on_drop: false }`
[INFO] [stdout] 69751563a785962657c23f74920fcb0b0fa0101d4e3fc863bab633a045d06162
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 982d38ccc922751dd4398d8b1e4d3bb2e2ed5c452f2103b48d4a4513b75301a6
[INFO] running `Command { std: "docker" "start" "-a" "982d38ccc922751dd4398d8b1e4d3bb2e2ed5c452f2103b48d4a4513b75301a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling dirs-sys v0.3.7
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling smallstr v0.2.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling nix v0.26.4
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling is-terminal v0.4.16
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling dirs v4.0.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling textwrap v0.16.2
[INFO] [stderr]    Compiling phf v0.11.3
[INFO] [stderr]    Compiling humantime v2.3.0
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling clap_derive v3.2.25
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling phf_codegen v0.11.3
[INFO] [stderr]    Compiling terminfo v0.8.0
[INFO] [stderr]    Compiling pest v2.8.2
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling clap v3.2.25
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling pest_meta v2.8.2
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling env_logger v0.10.2
[INFO] [stderr]    Compiling pest_generator v2.8.2
[INFO] [stderr]    Compiling pest_derive v2.8.2
[INFO] [stderr]    Compiling mortal v0.2.4
[INFO] [stderr]    Compiling linefeed v0.6.0
[INFO] [stderr]    Compiling strontium v0.6.0
[INFO] [stderr]    Compiling magc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:76:1
[INFO] [stdout]    |
[INFO] [stdout] 76 | #![feature(type_ascription)]
[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 `magc` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "982d38ccc922751dd4398d8b1e4d3bb2e2ed5c452f2103b48d4a4513b75301a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "982d38ccc922751dd4398d8b1e4d3bb2e2ed5c452f2103b48d4a4513b75301a6", kill_on_drop: false }`
[INFO] [stdout] 982d38ccc922751dd4398d8b1e4d3bb2e2ed5c452f2103b48d4a4513b75301a6