[INFO] fetching crate psp-logger 0.1.1...
[INFO] testing psp-logger-0.1.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate psp-logger 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate psp-logger 0.1.1
[INFO] finished tweaking crates.io crate psp-logger 0.1.1
[INFO] tweaked toml for crates.io crate psp-logger 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate psp-logger 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 17 packages to latest compatible versions
[INFO] [stderr]       Adding spin v0.9.8 (available: v0.10.0)
[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 unstringify v0.1.4
[INFO] [stderr]   Downloaded psp v0.3.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bcc063c5fd35c3838fd16bcf795c75ec60da0cb0c7edf2ff0973e6fab1052b42
[INFO] running `Command { std: "docker" "start" "-a" "bcc063c5fd35c3838fd16bcf795c75ec60da0cb0c7edf2ff0973e6fab1052b42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcc063c5fd35c3838fd16bcf795c75ec60da0cb0c7edf2ff0973e6fab1052b42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcc063c5fd35c3838fd16bcf795c75ec60da0cb0c7edf2ff0973e6fab1052b42", kill_on_drop: false }`
[INFO] [stdout] bcc063c5fd35c3838fd16bcf795c75ec60da0cb0c7edf2ff0973e6fab1052b42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 400262a60a71bd1a19df2eab1e001e07bfdde18a552ee5f4d8f498695ba7437e
[INFO] running `Command { std: "docker" "start" "-a" "400262a60a71bd1a19df2eab1e001e07bfdde18a552ee5f4d8f498695ba7437e", kill_on_drop: false }`
[INFO] [stderr]    Compiling psp v0.3.12
[INFO] [stderr]    Compiling unstringify v0.1.4
[INFO] [stderr]    Compiling num_enum_derive v0.7.4
[INFO] [stderr]    Compiling num_enum v0.7.4
[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/psp-0.3.12/src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | / #![feature(
[INFO] [stdout]  8 | |     asm_experimental_arch,
[INFO] [stdout]  9 | |     alloc_error_handler,
[INFO] [stdout] 10 | |     global_asm,
[INFO] [stdout] ...  |
[INFO] [stdout] 16 | |     rustc_attrs
[INFO] [stdout] 17 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `const_if_match` has been stable since `1.46.0` and no longer requires an attribute to enable
[INFO] [stdout]    = help: the feature `const_if_match` has been stable since `1.46.0` and no longer requires an attribute to enable
[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/psp-0.3.12/src/lib.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![feature(std_internals, panic_info_message, panic_internals, c_unwind)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `c_unwind` has been stable since `1.81.0` and no longer requires an attribute to enable
[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/psp-0.3.12/src/lib.rs:20:41
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![cfg_attr(not(feature = "stub-only"), feature(panic_unwind))]
[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 `psp` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "400262a60a71bd1a19df2eab1e001e07bfdde18a552ee5f4d8f498695ba7437e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "400262a60a71bd1a19df2eab1e001e07bfdde18a552ee5f4d8f498695ba7437e", kill_on_drop: false }`
[INFO] [stdout] 400262a60a71bd1a19df2eab1e001e07bfdde18a552ee5f4d8f498695ba7437e
