[INFO] fetching crate commander-rust 1.2.1...
[INFO] checking commander-rust-1.2.1 against beta for pr-78714
[INFO] extracting crate commander-rust 1.2.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate commander-rust 1.2.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate commander-rust 1.2.1
[INFO] finished tweaking crates.io crate commander-rust 1.2.1
[INFO] tweaked toml for crates.io crate commander-rust 1.2.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91fc078b5a9232cdc74ef962f74025b0cb086e998e64dee9a84bb028092a9ede
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "91fc078b5a9232cdc74ef962f74025b0cb086e998e64dee9a84bb028092a9ede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91fc078b5a9232cdc74ef962f74025b0cb086e998e64dee9a84bb028092a9ede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91fc078b5a9232cdc74ef962f74025b0cb086e998e64dee9a84bb028092a9ede", kill_on_drop: false }`
[INFO] [stdout] 91fc078b5a9232cdc74ef962f74025b0cb086e998e64dee9a84bb028092a9ede
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=forbid" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6fe744b311b6bb3c17582bfe75344f0b4c9e6f82786c3f6e59cf545089b3f97
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f6fe744b311b6bb3c17582bfe75344f0b4c9e6f82786c3f6e59cf545089b3f97", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking commander-core v1.2.0
[INFO] [stderr]    Compiling commander-macros v1.2.0
[INFO] [stderr]     Checking commander-rust v1.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Instance`, `normalize`
[INFO] [stdout]  --> tests/commander-core.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use commander_core::{ Instance, normalize, Raw };
[INFO] [stdout]   |                       ^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/cli.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `borrow_mut` found for mutable reference `&mut Option<for<'r> fn(&'r Vec<commander_rust::Raw>, Cli)>` in the current scope
[INFO] [stdout]   --> examples/cli.rs:41:1
[INFO] [stdout]    |
[INFO] [stdout] 41 | #[direct(<a> <b> [c] [d])]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^ method not found in `&mut Option<for<'r> fn(&'r Vec<commander_rust::Raw>, Cli)>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 3  | use std::borrow::BorrowMut;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `commander-rust`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f6fe744b311b6bb3c17582bfe75344f0b4c9e6f82786c3f6e59cf545089b3f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6fe744b311b6bb3c17582bfe75344f0b4c9e6f82786c3f6e59cf545089b3f97", kill_on_drop: false }`
[INFO] [stdout] f6fe744b311b6bb3c17582bfe75344f0b4c9e6f82786c3f6e59cf545089b3f97