[INFO] cloning repository https://github.com/bugabinga/buga_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bugabinga/buga_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbugabinga%2Fbuga_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbugabinga%2Fbuga_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d9e8077a9e8b10b0990482d6ac8174a609d4234
[INFO] checking bugabinga/buga_os/6d9e8077a9e8b10b0990482d6ac8174a609d4234 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbugabinga%2Fbuga_os" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bugabinga/buga_os on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bugabinga/buga_os
[INFO] finished tweaking git repo https://github.com/bugabinga/buga_os
[INFO] tweaked toml for git repo https://github.com/bugabinga/buga_os written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bugabinga/buga_os 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded spin v0.4.8
[INFO] [stderr]   Downloaded matches v0.1.6
[INFO] [stderr]   Downloaded volatile v0.2.4
[INFO] [stderr]   Downloaded if_chain v0.1.2
[INFO] [stderr]   Downloaded cargo_metadata v0.5.4
[INFO] [stderr]   Downloaded quine-mc_cluskey v0.2.4
[INFO] [stderr]   Downloaded getopts v0.2.17
[INFO] [stderr]   Downloaded toml v0.4.6
[INFO] [stderr]   Downloaded serde_derive v1.0.52
[INFO] [stderr]   Downloaded url v1.7.0
[INFO] [stderr]   Downloaded serde v1.0.52
[INFO] [stderr]   Downloaded clippy_lints v0.0.197
[INFO] [stderr]   Downloaded clippy v0.0.197
[INFO] [stderr]   Downloaded idna v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3c8c47a871d248f756cb728c5c88fead28ebe8f53e0b33b15f1a8d1d9cd6fb0
[INFO] running `Command { std: "docker" "start" "-a" "c3c8c47a871d248f756cb728c5c88fead28ebe8f53e0b33b15f1a8d1d9cd6fb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3c8c47a871d248f756cb728c5c88fead28ebe8f53e0b33b15f1a8d1d9cd6fb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3c8c47a871d248f756cb728c5c88fead28ebe8f53e0b33b15f1a8d1d9cd6fb0", kill_on_drop: false }`
[INFO] [stdout] c3c8c47a871d248f756cb728c5c88fead28ebe8f53e0b33b15f1a8d1d9cd6fb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4eb970d8912da605799cd602b7dd11c3d9a7a38af9dc54fe2ca2d035e82d3de2
[INFO] running `Command { std: "docker" "start" "-a" "4eb970d8912da605799cd602b7dd11c3d9a7a38af9dc54fe2ca2d035e82d3de2", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]    Compiling cc v1.0.15
[INFO] [stderr]     Checking serde v1.0.52
[INFO] [stderr]     Checking spin v0.4.8
[INFO] [stderr]     Checking rustc-demangle v0.1.8
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]     Checking matches v0.1.6
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking getopts v0.2.17
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/spin-0.4.8/src/lib.rs:8:43
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
[INFO] [stdout]   |                                           ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stdout] error: cannot find macro `asm` in this scope
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/spin-0.4.8/src/util.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     unsafe { asm!("pause" :::: "volatile"); }
[INFO] [stdout]   |              ^^^
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]   |
[INFO] [stdout] 1 + use core::arch::asm;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `const_atomic_usize_new`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/spin-0.4.8/src/lib.rs:8:76
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
[INFO] [stdout]   |                                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0557, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spin` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4eb970d8912da605799cd602b7dd11c3d9a7a38af9dc54fe2ca2d035e82d3de2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4eb970d8912da605799cd602b7dd11c3d9a7a38af9dc54fe2ca2d035e82d3de2", kill_on_drop: false }`
[INFO] [stdout] 4eb970d8912da605799cd602b7dd11c3d9a7a38af9dc54fe2ca2d035e82d3de2