[INFO] cloning repository https://github.com/funemy/rust-os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/funemy/rust-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffunemy%2Frust-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffunemy%2Frust-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0fdcd30f9bef0f934824778d5ecc41ebf697a7af
[INFO] checking funemy/rust-os against master#b3f8586fb1e4859678d6b231e780ff81801d2282 for pr-147589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffunemy%2Frust-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] started tweaking git repo https://github.com/funemy/rust-os
[INFO] finished tweaking git repo https://github.com/funemy/rust-os
[INFO] tweaked toml for git repo https://github.com/funemy/rust-os written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/funemy/rust-os on toolchain b3f8586fb1e4859678d6b231e780ff81801d2282
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3f8586fb1e4859678d6b231e780ff81801d2282" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/funemy/rust-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" "+b3f8586fb1e4859678d6b231e780ff81801d2282" "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 bitflags v1.0.4
[INFO] [stderr]   Downloaded cc v1.0.35
[INFO] [stderr]   Downloaded usize_conversions v0.2.0
[INFO] [stderr]   Downloaded raw-cpuid v6.1.0
[INFO] [stderr]   Downloaded x86_64 v0.6.0
[INFO] [stderr]   Downloaded array-init v0.0.4
[INFO] [stderr]   Downloaded pulldown-cmark v0.0.3
[INFO] [stderr]   Downloaded array-init v0.0.3
[INFO] [stderr]   Downloaded bit_field v0.9.0
[INFO] [stderr]   Downloaded skeptic v0.5.0
[INFO] [stderr]   Downloaded semver-parser v0.7.0
[INFO] [stderr]   Downloaded rustc_version v0.2.3
[INFO] [stderr]   Downloaded ux v0.1.3
[INFO] [stderr]   Downloaded fixedvec v0.2.3
[INFO] [stderr]   Downloaded rand_core v0.4.0
[INFO] [stderr]   Downloaded remove_dir_all v0.5.1
[INFO] [stderr]   Downloaded font8x8 v0.2.4
[INFO] [stderr]   Downloaded unicode-width v0.1.5
[INFO] [stderr]   Downloaded x86_64 v0.3.6
[INFO] [stderr]   Downloaded spin v0.4.10
[INFO] [stderr]   Downloaded pc-keyboard v0.3.1
[INFO] [stderr]   Downloaded getopts v0.2.18
[INFO] [stderr]   Downloaded spin v0.5.0
[INFO] [stderr]   Downloaded volatile v0.2.6
[INFO] [stderr]   Downloaded nodrop v0.1.13
[INFO] [stderr]   Downloaded llvm-tools v0.1.1
[INFO] [stderr]   Downloaded zero v0.1.2
[INFO] [stderr]   Downloaded pic8259_simple v0.1.1
[INFO] [stderr]   Downloaded rdrand v0.4.0
[INFO] [stderr]   Downloaded rand v0.4.6
[INFO] [stderr]   Downloaded os_bootinfo v0.2.1
[INFO] [stderr]   Downloaded libm v0.1.2
[INFO] [stderr]   Downloaded cpuio v0.2.0
[INFO] [stderr]   Downloaded xmas-elf v0.6.2
[INFO] [stderr]   Downloaded bootloader v0.6.0
[INFO] [stderr] error: failed to parse manifest at `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/bootloader-0.6.0/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 bitflags v1.0.4
  Downloaded cc v1.0.35
  Downloaded usize_conversions v0.2.0
  Downloaded raw-cpuid v6.1.0
  Downloaded x86_64 v0.6.0
  Downloaded array-init v0.0.4
  Downloaded pulldown-cmark v0.0.3
  Downloaded array-init v0.0.3
  Downloaded bit_field v0.9.0
  Downloaded skeptic v0.5.0
  Downloaded semver-parser v0.7.0
  Downloaded rustc_version v0.2.3
  Downloaded ux v0.1.3
  Downloaded fixedvec v0.2.3
  Downloaded rand_core v0.4.0
  Downloaded remove_dir_all v0.5.1
  Downloaded font8x8 v0.2.4
  Downloaded unicode-width v0.1.5
  Downloaded x86_64 v0.3.6
  Downloaded spin v0.4.10
  Downloaded pc-keyboard v0.3.1
  Downloaded getopts v0.2.18
  Downloaded spin v0.5.0
  Downloaded volatile v0.2.6
  Downloaded nodrop v0.1.13
  Downloaded llvm-tools v0.1.1
  Downloaded zero v0.1.2
  Downloaded pic8259_simple v0.1.1
  Downloaded rdrand v0.4.0
  Downloaded rand v0.4.6
  Downloaded os_bootinfo v0.2.1
  Downloaded libm v0.1.2
  Downloaded cpuio v0.2.0
  Downloaded xmas-elf v0.6.2
  Downloaded bootloader v0.6.0
error: failed to parse manifest at `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/bootloader-0.6.0/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.