[INFO] cloning repository https://github.com/wwestlake/hacker-os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wwestlake/hacker-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwwestlake%2Fhacker-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwwestlake%2Fhacker-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 688363919b3897b01f0e1ee8e030d77f1e8cbf79
[INFO] checking wwestlake/hacker-os against master#c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2 for pr-142712
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwwestlake%2Fhacker-os" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/wwestlake/hacker-os
[INFO] finished tweaking git repo https://github.com/wwestlake/hacker-os
[INFO] tweaked toml for git repo https://github.com/wwestlake/hacker-os written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wwestlake/hacker-os on toolchain c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wwestlake/hacker-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" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cpuio v0.2.0
[INFO] [stderr]   Downloaded ux v0.1.3
[INFO] [stderr]   Downloaded x86_64 v0.3.5
[INFO] [stderr]   Downloaded pic8259_simple v0.1.1
[INFO] [stderr]   Downloaded array-init v0.0.4
[INFO] [stderr]   Downloaded spin v0.4.10
[INFO] [stderr]   Downloaded skeptic v0.5.0
[INFO] [stderr]   Downloaded x86_64 v0.2.14
[INFO] [stderr]   Downloaded array-init v0.0.3
[INFO] [stderr]   Downloaded rand_core v0.3.0
[INFO] [stderr]   Downloaded getopts v0.2.18
[INFO] [stderr]   Downloaded font8x8 v0.2.4
[INFO] [stderr]   Downloaded xmas-elf v0.6.2
[INFO] [stderr]   Downloaded bootloader v0.3.12
[INFO] [stderr] error: failed to parse manifest at `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/bootloader-0.3.12/Cargo.toml`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   the cargo feature `publish-lockfile` has been removed in the 1.37 release
[INFO] [stderr] 
[INFO] [stderr]   This package cannot be used with this version of Cargo, as the unstable feature `publish-lockfile` is no longer supported.
[INFO] [stderr]   See https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#publish-lockfile for more information about using this feature.


command failed: exit status: 101

    Blocking waiting for file lock on package cache
    Updating crates.io index
    Blocking waiting for file lock on package cache
 Downloading crates ...
  Downloaded cpuio v0.2.0
  Downloaded ux v0.1.3
  Downloaded x86_64 v0.3.5
  Downloaded pic8259_simple v0.1.1
  Downloaded array-init v0.0.4
  Downloaded spin v0.4.10
  Downloaded skeptic v0.5.0
  Downloaded x86_64 v0.2.14
  Downloaded array-init v0.0.3
  Downloaded rand_core v0.3.0
  Downloaded getopts v0.2.18
  Downloaded font8x8 v0.2.4
  Downloaded xmas-elf v0.6.2
  Downloaded bootloader v0.3.12
error: failed to parse manifest at `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/bootloader-0.3.12/Cargo.toml`

Caused by:
  the cargo feature `publish-lockfile` has been removed in the 1.37 release

  This package cannot be used with this version of Cargo, as the unstable feature `publish-lockfile` is no longer supported.
  See https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#publish-lockfile for more information about using this feature.