[INFO] cloning repository https://github.com/npetrangelo/lumos_lib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/npetrangelo/lumos_lib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnpetrangelo%2Flumos_lib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnpetrangelo%2Flumos_lib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d9c170fdc6892b8106020c047a2286dbe5d7bac
[INFO] checking npetrangelo/lumos_lib against master#2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnpetrangelo%2Flumos_lib" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/npetrangelo/lumos_lib on toolchain 2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/npetrangelo/lumos_lib
[INFO] finished tweaking git repo https://github.com/npetrangelo/lumos_lib
[INFO] tweaked toml for git repo https://github.com/npetrangelo/lumos_lib written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/npetrangelo/lumos_lib 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" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.187
[INFO] [stderr] error: failed to unpack package `serde_derive v1.0.187`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack entry at `serde_derive-1.0.187/src/de.rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_derive-1.0.187/src/de.rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack `serde_derive-1.0.187/src/de.rs` into `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_derive-1.0.187/src/de.rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)


command failed: exit status: 101

 Downloading crates ...
  Downloaded serde_derive v1.0.187
error: failed to unpack package `serde_derive v1.0.187`

Caused by:
  failed to unpack entry at `serde_derive-1.0.187/src/de.rs`

Caused by:
  failed to unpack `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_derive-1.0.187/src/de.rs`

Caused by:
  failed to unpack `serde_derive-1.0.187/src/de.rs` into `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_derive-1.0.187/src/de.rs`

Caused by:
  No space left on device (os error 28)