[INFO] cloning repository https://github.com/coltonweaver/rust-os-tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/coltonweaver/rust-os-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoltonweaver%2Frust-os-tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoltonweaver%2Frust-os-tutorial'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d9745ed067f78188b976b9937dc4556877d80d6a [INFO] checking coltonweaver/rust-os-tutorial against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoltonweaver%2Frust-os-tutorial" "/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/coltonweaver/rust-os-tutorial 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-1/source/.cargo/config [INFO] removed /workspace/builds/worker-1/source/rust-toolchain [INFO] started tweaking git repo https://github.com/coltonweaver/rust-os-tutorial [INFO] removed 0 missing tests [INFO] finished tweaking git repo https://github.com/coltonweaver/rust-os-tutorial [INFO] tweaked toml for git repo https://github.com/coltonweaver/rust-os-tutorial written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/coltonweaver/rust-os-tutorial 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] Downloading crates ... [INFO] [stderr] Downloaded uart_16550 v0.2.7 [INFO] [stderr] Downloaded x86_64 v0.11.0 [INFO] [stderr] Downloaded spinning_top v0.1.0 [INFO] [stderr] Downloaded pc-keyboard v0.5.0 [INFO] [stderr] Downloaded bootloader v0.9.4 [INFO] [stderr] Downloaded linked_list_allocator v0.8.4 [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" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 04c4ee24087d3f9e9c6f93ef16df0eab94ccec647a1bdef6ef49fb8a170f350e [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" "04c4ee24087d3f9e9c6f93ef16df0eab94ccec647a1bdef6ef49fb8a170f350e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "04c4ee24087d3f9e9c6f93ef16df0eab94ccec647a1bdef6ef49fb8a170f350e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "04c4ee24087d3f9e9c6f93ef16df0eab94ccec647a1bdef6ef49fb8a170f350e", kill_on_drop: false }` [INFO] [stdout] 04c4ee24087d3f9e9c6f93ef16df0eab94ccec647a1bdef6ef49fb8a170f350e [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" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e04fafaa3453fedbc0acc3ef2fef76d6639b6032b35cbd3e3cf24ee22e80c5b9 [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" "e04fafaa3453fedbc0acc3ef2fef76d6639b6032b35cbd3e3cf24ee22e80c5b9", kill_on_drop: false }` [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.36 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling x86_64 v0.11.0 [INFO] [stderr] Compiling bootloader v0.9.4 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Checking bit_field v0.9.0 [INFO] [stderr] Checking futures-task v0.3.5 [INFO] [stderr] Checking futures-core v0.3.5 [INFO] [stderr] Checking cpuio v0.3.0 [INFO] [stderr] Checking conquer-util v0.2.0 [INFO] [stderr] Checking volatile v0.2.6 [INFO] [stderr] Checking pc-keyboard v0.5.0 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Checking spin v0.5.2 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Checking pic8259_simple v0.2.0 [INFO] [stderr] Checking conquer-once v0.2.1 [INFO] [stderr] Compiling proc-macro2 v1.0.19 [INFO] [stderr] Checking bitflags v1.2.1 [INFO] [stderr] Checking spinning_top v0.1.0 [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/x86_64-0.11.0/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[E0557]: feature has been removed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/x86_64-0.11.0/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] [stderr] Checking linked_list_allocator v0.8.4 [INFO] [stdout] error[E0658]: mutable references are not allowed in constant functions [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.8.4/src/hole.rs:18:23 [INFO] [stdout] | [INFO] [stdout] 18 | next: None, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #57349 for more information [INFO] [stdout] = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable [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 E0658`. [INFO] [stdout] [INFO] [stderr] error: could not compile `linked_list_allocator` [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] [stdout] error[E0658]: mutable references are not allowed in constant functions [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.8.4/src/hole.rs:18:23 [INFO] [stdout] | [INFO] [stdout] 18 | next: None, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #57349 for more information [INFO] [stdout] = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable [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 E0658`. [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] [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: build failed [INFO] running `Command { std: "docker" "inspect" "e04fafaa3453fedbc0acc3ef2fef76d6639b6032b35cbd3e3cf24ee22e80c5b9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e04fafaa3453fedbc0acc3ef2fef76d6639b6032b35cbd3e3cf24ee22e80c5b9", kill_on_drop: false }` [INFO] [stdout] e04fafaa3453fedbc0acc3ef2fef76d6639b6032b35cbd3e3cf24ee22e80c5b9