[INFO] fetching crate alternate-future 0.1.4...
[INFO] testing alternate-future-0.1.4 against 1.59.0 for beta-1.60-1
[INFO] extracting crate alternate-future 0.1.4 into /workspace/builds/worker-22/source
[INFO] validating manifest of crates.io crate alternate-future 0.1.4 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alternate-future 0.1.4
[INFO] finished tweaking crates.io crate alternate-future 0.1.4
[INFO] tweaked toml for crates.io crate alternate-future 0.1.4 written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30c7f0ed7733fc81542c2a8707889d44f4fd7064718d612a2f262f9dfcd0a801
[INFO] running `Command { std: "docker" "start" "-a" "30c7f0ed7733fc81542c2a8707889d44f4fd7064718d612a2f262f9dfcd0a801", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30c7f0ed7733fc81542c2a8707889d44f4fd7064718d612a2f262f9dfcd0a801", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30c7f0ed7733fc81542c2a8707889d44f4fd7064718d612a2f262f9dfcd0a801", kill_on_drop: false }`
[INFO] [stdout] 30c7f0ed7733fc81542c2a8707889d44f4fd7064718d612a2f262f9dfcd0a801
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7d2bf17a96ff41585c1bb95d063eeabbf5d32b7d45d9e36e06c5273d079d23b
[INFO] running `Command { std: "docker" "start" "-a" "f7d2bf17a96ff41585c1bb95d063eeabbf5d32b7d45d9e36e06c5273d079d23b", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v0.1.16
[INFO] [stderr]    Compiling spin v0.3.5
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.3.5/src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(const_fn, asm)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `asm` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.3.5/src/mutex.rs:102:14
[INFO] [stdout]     |
[INFO] [stdout] 102 |     unsafe { asm!("pause" :::: "volatile"); }
[INFO] [stdout]     |              ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider importing this macro:
[INFO] [stdout]             core::arch::asm
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spin` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "f7d2bf17a96ff41585c1bb95d063eeabbf5d32b7d45d9e36e06c5273d079d23b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7d2bf17a96ff41585c1bb95d063eeabbf5d32b7d45d9e36e06c5273d079d23b", kill_on_drop: false }`
[INFO] [stdout] f7d2bf17a96ff41585c1bb95d063eeabbf5d32b7d45d9e36e06c5273d079d23b