[INFO] cloning repository https://github.com/aadit0402/self-learning-os-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aadit0402/self-learning-os-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faadit0402%2Fself-learning-os-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faadit0402%2Fself-learning-os-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ad9dffa97da4f6c6307cf89c25497ceb0e724fba
[INFO] checking aadit0402/self-learning-os-rust against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faadit0402%2Fself-learning-os-rust" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aadit0402/self-learning-os-rust on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aadit0402/self-learning-os-rust
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/aadit0402/self-learning-os-rust
[INFO] tweaked toml for git repo https://github.com/aadit0402/self-learning-os-rust written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/aadit0402/self-learning-os-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uart_16550 v0.2.14
[INFO] [stderr]   Downloaded zero v0.1.2
[INFO] [stderr]   Downloaded xmas-elf v0.6.2
[INFO] [stderr]   Downloaded fixedvec v0.2.4
[INFO] [stderr]   Downloaded llvm-tools v0.1.1
[INFO] [stderr]   Downloaded usize_conversions v0.2.0
[INFO] [stderr]   Downloaded array-init v0.0.4
[INFO] [stderr]   Downloaded ux v0.1.3
[INFO] [stderr]   Downloaded x86_64 v0.7.7
[INFO] [stderr]   Downloaded volatile v0.4.4
[INFO] [stderr]   Downloaded x86_64 v0.14.3
[INFO] [stderr]   Downloaded bit_field v0.9.0
[INFO] [stderr]   Downloaded bootloader v0.6.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5807f43e8643c059b175ba18622fea29f715758bbdfca597bf21ab98a5a33b9b
[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" "5807f43e8643c059b175ba18622fea29f715758bbdfca597bf21ab98a5a33b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5807f43e8643c059b175ba18622fea29f715758bbdfca597bf21ab98a5a33b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5807f43e8643c059b175ba18622fea29f715758bbdfca597bf21ab98a5a33b9b", kill_on_drop: false }`
[INFO] [stdout] 5807f43e8643c059b175ba18622fea29f715758bbdfca597bf21ab98a5a33b9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78edc7781e3a8dcc4caa800a76768dd6851607e9c019b1a56538a7f317e7c85b
[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" "78edc7781e3a8dcc4caa800a76768dd6851607e9c019b1a56538a7f317e7c85b", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling x86_64 v0.14.3
[INFO] [stderr]    Compiling llvm-tools v0.1.1
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking ux v0.1.3
[INFO] [stderr]     Checking volatile v0.4.4
[INFO] [stderr]     Checking zero v0.1.2
[INFO] [stderr]     Checking usize_conversions v0.2.0
[INFO] [stderr]     Checking fixedvec v0.2.4
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stderr]     Checking volatile v0.2.6
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.10/src/lib.rs:6:43
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "const_fn", 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 `spin`
[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" "78edc7781e3a8dcc4caa800a76768dd6851607e9c019b1a56538a7f317e7c85b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78edc7781e3a8dcc4caa800a76768dd6851607e9c019b1a56538a7f317e7c85b", kill_on_drop: false }`
[INFO] [stdout] 78edc7781e3a8dcc4caa800a76768dd6851607e9c019b1a56538a7f317e7c85b