[INFO] fetching crate rv64emu 0.1.1...
[INFO] testing rv64emu-0.1.1 against master#1ef7943ee607160a564655b6596f83670ef95df5 for pr-146098-6
[INFO] extracting crate rv64emu 0.1.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate rv64emu 0.1.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rv64emu 0.1.1
[INFO] tweaked toml for crates.io crate rv64emu 0.1.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rv64emu 0.1.1 on toolchain 1ef7943ee607160a564655b6596f83670ef95df5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rv64emu 0.1.1 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" "+1ef7943ee607160a564655b6596f83670ef95df5" "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/bi/tf/bitfield-struct, error: No space left on device (os error 28)
[INFO] [stderr] error: failed to select a version for the requirement `syn = "^2.0"` (locked to 2.0.29)
[INFO] [stderr] candidate versions found which didn't match: 1.0.34, 1.0.33, 1.0.32, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `bitfield-struct v0.5.3`
[INFO] [stderr]     ... which satisfies dependency `bitfield-struct = "^0.5.3"` (locked to 0.5.3) of package `rv64emu v0.1.1 (/workspace/builds/worker-3-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/bi/tf/bitfield-struct, error: No space left on device (os error 28)
error: failed to select a version for the requirement `syn = "^2.0"` (locked to 2.0.29)
candidate versions found which didn't match: 1.0.34, 1.0.33, 1.0.32, ...
location searched: crates.io index
required by package `bitfield-struct v0.5.3`
    ... which satisfies dependency `bitfield-struct = "^0.5.3"` (locked to 0.5.3) of package `rv64emu v0.1.1 (/workspace/builds/worker-3-tc1/source)`