[INFO] cloning repository https://github.com/tomoyat1/an-os-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomoyat1/an-os-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomoyat1%2Fan-os-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomoyat1%2Fan-os-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 601e1b66bd0e93f9e0f614b182b18c7582fb7751
[INFO] checking tomoyat1/an-os-in-rust against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomoyat1%2Fan-os-in-rust" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomoyat1/an-os-in-rust on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/tomoyat1/an-os-in-rust
[INFO] finished tweaking git repo https://github.com/tomoyat1/an-os-in-rust
[INFO] tweaked toml for git repo https://github.com/tomoyat1/an-os-in-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/tomoyat1/an-os-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded x86_64 v0.11.2
[INFO] [stderr]   Downloaded uefi-services v0.2.5
[INFO] [stderr]   Downloaded uefi-macros v0.3.3
[INFO] [stderr]   Downloaded uefi v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 533fe15a25c6f95d0c803a4054370d35508ce30d83eb12f8e5ad37ab8d19e5ab
[INFO] running `Command { std: "docker" "start" "-a" "533fe15a25c6f95d0c803a4054370d35508ce30d83eb12f8e5ad37ab8d19e5ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "533fe15a25c6f95d0c803a4054370d35508ce30d83eb12f8e5ad37ab8d19e5ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "533fe15a25c6f95d0c803a4054370d35508ce30d83eb12f8e5ad37ab8d19e5ab", kill_on_drop: false }`
[INFO] [stdout] 533fe15a25c6f95d0c803a4054370d35508ce30d83eb12f8e5ad37ab8d19e5ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7edbe84e4921dc1b90fbe178865f9d873160c31fc792c987b88b36a729054c64
[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" "7edbe84e4921dc1b90fbe178865f9d873160c31fc792c987b88b36a729054c64", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking bit_field v0.10.0
[INFO] [stderr]    Compiling x86_64 v0.11.2
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stderr]    Compiling an-operating-system-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking array-macro v1.0.5
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking ucs2 v0.3.1
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/x86_64-0.11.2/src/lib.rs:6:43
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "const_fn", feature(const_in_array_repeat_expressions))]
[INFO] [stdout]   |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed due to causing promotable bugs
[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 `x86_64`
[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" "7edbe84e4921dc1b90fbe178865f9d873160c31fc792c987b88b36a729054c64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7edbe84e4921dc1b90fbe178865f9d873160c31fc792c987b88b36a729054c64", kill_on_drop: false }`
[INFO] [stdout] 7edbe84e4921dc1b90fbe178865f9d873160c31fc792c987b88b36a729054c64