[INFO] fetching crate bottleos 0.2.0...
[INFO] checking bottleos-0.2.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate bottleos 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate bottleos 0.2.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate bottleos 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate bottleos 0.2.0
[INFO] tweaked toml for crates.io crate bottleos 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate bottleos 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pic8259_simple v0.2.0
[INFO] [stderr]   Downloaded cpuio v0.3.0
[INFO] [stderr]   Downloaded x86_64 v0.13.2
[INFO] [stderr]   Downloaded bootloader v0.9.12
[INFO] [stderr]   Downloaded linked_list_allocator v0.8.11
[INFO] [stderr]   Downloaded uart_16550 v0.2.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 322e3e952293c977af85b3e677b27b8288e06151afa0a4bee082e1a1c5cb50d1
[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" "322e3e952293c977af85b3e677b27b8288e06151afa0a4bee082e1a1c5cb50d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "322e3e952293c977af85b3e677b27b8288e06151afa0a4bee082e1a1c5cb50d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "322e3e952293c977af85b3e677b27b8288e06151afa0a4bee082e1a1c5cb50d1", kill_on_drop: false }`
[INFO] [stdout] 322e3e952293c977af85b3e677b27b8288e06151afa0a4bee082e1a1c5cb50d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 942421b2da154ba273c35e773883843b9c9bd6742ab4c3691ddf34584ecb5f05
[INFO] running `Command { std: "docker" "start" "-a" "942421b2da154ba273c35e773883843b9c9bd6742ab4c3691ddf34584ecb5f05", kill_on_drop: false }`
[INFO] [stderr]    Compiling x86_64 v0.13.2
[INFO] [stderr]    Compiling bootloader v0.9.12
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking cpuio v0.3.0
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking pc-keyboard v0.5.1
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.3.4/src/lib.rs:91:42
[INFO] [stdout]    |
[INFO] [stdout] 91 | #![cfg_attr(feature = "nightly", 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[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cpuio-0.3.0/src/lib.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(llvm_asm, 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 `cpuio` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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" "942421b2da154ba273c35e773883843b9c9bd6742ab4c3691ddf34584ecb5f05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "942421b2da154ba273c35e773883843b9c9bd6742ab4c3691ddf34584ecb5f05", kill_on_drop: false }`
[INFO] [stdout] 942421b2da154ba273c35e773883843b9c9bd6742ab4c3691ddf34584ecb5f05