[INFO] fetching crate mm1-test-rt 0.7.21...
[INFO] testing mm1-test-rt-0.7.21 against 1.94.0 for beta-1.95-1
[INFO] extracting crate mm1-test-rt 0.7.21 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate mm1-test-rt 0.7.21
[INFO] finished tweaking crates.io crate mm1-test-rt 0.7.21
[INFO] tweaked toml for crates.io crate mm1-test-rt 0.7.21 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mm1-test-rt 0.7.21 on toolchain 1.94.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mm1-test-rt 0.7.21 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" "+1.94.0" "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/mm/1-/mm1-proto-system, error: No space left on device (os error 28)
[INFO] [stderr] error: failed to select a version for the requirement `tracing = "^0.1"` (locked to 0.1.43)
[INFO] [stderr] candidate versions found which didn't match: 0.1.15, 0.1.14, 0.1.13, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `mm1-core v0.7.21`
[INFO] [stderr]     ... which satisfies dependency `mm1-core = "=0.7.21"` (locked to 0.7.21) of package `mm1-test-rt v0.7.21 (/workspace/builds/worker-4-tc1/source)`


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/mm/1-/mm1-proto-system, error: No space left on device (os error 28)
error: failed to select a version for the requirement `tracing = "^0.1"` (locked to 0.1.43)
candidate versions found which didn't match: 0.1.15, 0.1.14, 0.1.13, ...
location searched: crates.io index
required by package `mm1-core v0.7.21`
    ... which satisfies dependency `mm1-core = "=0.7.21"` (locked to 0.7.21) of package `mm1-test-rt v0.7.21 (/workspace/builds/worker-4-tc1/source)`