[INFO] fetching crate ruspiro-gpio 0.4.2...
[INFO] testing ruspiro-gpio-0.4.2 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] extracting crate ruspiro-gpio 0.4.2 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate ruspiro-gpio 0.4.2 on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-15/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate ruspiro-gpio 0.4.2
[INFO] finished tweaking crates.io crate ruspiro-gpio 0.4.2
[INFO] tweaked toml for crates.io crate ruspiro-gpio 0.4.2 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e6ec42ff391affabab9773145cba5d08ef84691c4bdc774e8a7c720d8731d3d
[INFO] running `Command { std: "docker" "start" "-a" "4e6ec42ff391affabab9773145cba5d08ef84691c4bdc774e8a7c720d8731d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e6ec42ff391affabab9773145cba5d08ef84691c4bdc774e8a7c720d8731d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e6ec42ff391affabab9773145cba5d08ef84691c4bdc774e8a7c720d8731d3d", kill_on_drop: false }`
[INFO] [stdout] 4e6ec42ff391affabab9773145cba5d08ef84691c4bdc774e8a7c720d8731d3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f56993652a4e8e0192c7602f530bd27e0eddad3a155eced5538dfbaa9a9d448a
[INFO] running `Command { std: "docker" "start" "-a" "f56993652a4e8e0192c7602f530bd27e0eddad3a155eced5538dfbaa9a9d448a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling ruspiro-register v0.5.4
[INFO] [stderr]    Compiling ruspiro-interrupt v0.4.3
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling ruspiro-singleton v0.4.2
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ruspiro-singleton-0.4.2/src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruspiro-singleton`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f56993652a4e8e0192c7602f530bd27e0eddad3a155eced5538dfbaa9a9d448a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f56993652a4e8e0192c7602f530bd27e0eddad3a155eced5538dfbaa9a9d448a", kill_on_drop: false }`
[INFO] [stdout] f56993652a4e8e0192c7602f530bd27e0eddad3a155eced5538dfbaa9a9d448a