[INFO] fetching crate psp 0.1.3...
[INFO] testing psp-0.1.3 against 1.54.0 for beta-1.55-1
[INFO] extracting crate psp 0.1.3 into /workspace/builds/worker-46/source
[INFO] validating manifest of crates.io crate psp 0.1.3 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate psp 0.1.3
[INFO] finished tweaking crates.io crate psp 0.1.3
[INFO] tweaked toml for crates.io crate psp 0.1.3 written to /workspace/builds/worker-46/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 655ecc8991bef449b1d1d9fbb9be93df7cd5eca08139ccc0b957907fe1551e71
[INFO] running `Command { std: "docker" "start" "-a" "655ecc8991bef449b1d1d9fbb9be93df7cd5eca08139ccc0b957907fe1551e71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "655ecc8991bef449b1d1d9fbb9be93df7cd5eca08139ccc0b957907fe1551e71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "655ecc8991bef449b1d1d9fbb9be93df7cd5eca08139ccc0b957907fe1551e71", kill_on_drop: false }`
[INFO] [stdout] 655ecc8991bef449b1d1d9fbb9be93df7cd5eca08139ccc0b957907fe1551e71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d914daac40dd5bb2fa2b4e56882d8c7bf3f4f3a2f238d1136d8e50d7093711ed
[INFO] running `Command { std: "docker" "start" "-a" "d914daac40dd5bb2fa2b4e56882d8c7bf3f4f3a2f238d1136d8e50d7093711ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling psp v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling num_enum_derive v0.5.3
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling paste v0.1.18
[INFO] [stderr]    Compiling num_enum v0.5.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / #![feature(
[INFO] [stdout] 3  | |     alloc_error_handler,
[INFO] [stdout] 4  | |     llvm_asm,
[INFO] [stdout] 5  | |     global_asm,
[INFO] [stdout] ...  |
[INFO] [stdout] 12 | |     lang_items,
[INFO] [stdout] 13 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `const_loop` 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]   --> src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(std_internals, panic_info_message, panic_internals, unwind_attributes)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:17:41
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![cfg_attr(not(feature = "stub-only"), feature(panic_unwind))]
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "d914daac40dd5bb2fa2b4e56882d8c7bf3f4f3a2f238d1136d8e50d7093711ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d914daac40dd5bb2fa2b4e56882d8c7bf3f4f3a2f238d1136d8e50d7093711ed", kill_on_drop: false }`
[INFO] [stdout] d914daac40dd5bb2fa2b4e56882d8c7bf3f4f3a2f238d1136d8e50d7093711ed
