[INFO] cloning repository https://github.com/mtesseract/rtahin
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mtesseract/rtahin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtesseract%2Frtahin", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtesseract%2Frtahin'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6909a9602f8ec97867cd0fd67b641e2fd0308f43
[INFO] testing mtesseract/rtahin against master#e9385f9eea0221ef295a188d49d16f8f5189abf1 for pr-146098
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtesseract%2Frtahin" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mtesseract/rtahin
[INFO] finished tweaking git repo https://github.com/mtesseract/rtahin
[INFO] tweaked toml for git repo https://github.com/mtesseract/rtahin written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mtesseract/rtahin on toolchain e9385f9eea0221ef295a188d49d16f8f5189abf1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mtesseract/rtahin 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" "+e9385f9eea0221ef295a188d49d16f8f5189abf1" "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] warning: failed to write cache, path: /workspace/cargo-home/registry/index/index.crates.io-1949cf8c6b5b557f/.cache/ba/se/base64, error: No space left on device (os error 28)
[INFO] [stderr] error: failed to select a version for the requirement `serde_json = "^1.0"` (locked to 1.0.40)
[INFO] [stderr] candidate versions found which didn't match: 0.8.1, 0.8.0, 0.8.0-rc1, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `rtahin v0.1.0 (/workspace/builds/worker-0-tc1/source)`
[INFO] [stderr] if you are looking for the prerelease package it needs to be specified explicitly
[INFO] [stderr]     serde_json = { version = "0.8.0-rc1" }


command failed: exit status: 101

    Blocking waiting for file lock on package cache
    Updating crates.io index
warning: failed to write cache, path: /workspace/cargo-home/registry/index/index.crates.io-1949cf8c6b5b557f/.cache/ba/se/base64, error: No space left on device (os error 28)
error: failed to select a version for the requirement `serde_json = "^1.0"` (locked to 1.0.40)
candidate versions found which didn't match: 0.8.1, 0.8.0, 0.8.0-rc1, ...
location searched: crates.io index
required by package `rtahin v0.1.0 (/workspace/builds/worker-0-tc1/source)`
if you are looking for the prerelease package it needs to be specified explicitly
    serde_json = { version = "0.8.0-rc1" }