[INFO] fetching crate fcp 0.2.1...
[INFO] testing fcp-0.2.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate fcp 0.2.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate fcp 0.2.1
[INFO] finished tweaking crates.io crate fcp 0.2.1
[INFO] tweaked toml for crates.io crate fcp 0.2.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fcp 0.2.1 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fcp 0.2.1 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4bfa6693680f19b910cb26c636569ce19b5836057223e3d53be6506d20fda86
[INFO] running `Command { std: "docker" "start" "-a" "d4bfa6693680f19b910cb26c636569ce19b5836057223e3d53be6506d20fda86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4bfa6693680f19b910cb26c636569ce19b5836057223e3d53be6506d20fda86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4bfa6693680f19b910cb26c636569ce19b5836057223e3d53be6506d20fda86", kill_on_drop: false }`
[INFO] [stdout] d4bfa6693680f19b910cb26c636569ce19b5836057223e3d53be6506d20fda86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 319de8a5ccf7bbf6256e341b121f1746ca4c9de674544d354e1fa9c932c9b1fd
[INFO] running `Command { std: "docker" "start" "-a" "319de8a5ccf7bbf6256e341b121f1746ca4c9de674544d354e1fa9c932c9b1fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling nix v0.22.0
[INFO] [stderr]    Compiling fcp v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]   --> src/filesystem.rs:47:66
[INFO] [stdout]    |
[INFO] [stdout] 47 |         |err| Error::new(format!("{}: {}", $path.display(), err));
[INFO] [stdout]    |                                                                  ^
[INFO] [stdout] ...
[INFO] [stdout] 63 |         .map_err(make_error_message!(path))
[INFO] [stdout]    |                  ------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]    = note: `#[warn(semicolon_in_expressions_from_macros)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `make_error_message` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]   --> src/filesystem.rs:47:66
[INFO] [stdout]    |
[INFO] [stdout] 47 |         |err| Error::new(format!("{}: {}", $path.display(), err));
[INFO] [stdout]    |                                                                  ^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         .map_err(make_error_message!(path))
[INFO] [stdout]    |                  ------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]    = note: this warning originates in the macro `make_error_message` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]   --> src/filesystem.rs:47:66
[INFO] [stdout]    |
[INFO] [stdout] 47 |         |err| Error::new(format!("{}: {}", $path.display(), err));
[INFO] [stdout]    |                                                                  ^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     unistd::mkfifo(path, mode).map_err(make_error_message!(path))
[INFO] [stdout]    |                                        ------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]    = note: this warning originates in the macro `make_error_message` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/main.rs:27:44
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let args: Box<_> = env::args().skip(1).collect();
[INFO] [stdout]    |                                            ^^^^^^^ cannot infer type of the type parameter `B` declared on the method `collect`
[INFO] [stdout] 28 |     for arg in args.iter() {
[INFO] [stdout]    |                     ---- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider specifying the generic argument
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let args: Box<_> = env::args().skip(1).collect::<Vec<_>>();
[INFO] [stdout]    |                                                   ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fcp` (bin "fcp") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "319de8a5ccf7bbf6256e341b121f1746ca4c9de674544d354e1fa9c932c9b1fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "319de8a5ccf7bbf6256e341b121f1746ca4c9de674544d354e1fa9c932c9b1fd", kill_on_drop: false }`
[INFO] [stdout] 319de8a5ccf7bbf6256e341b121f1746ca4c9de674544d354e1fa9c932c9b1fd
