[INFO] fetching crate argmin-observer-slog 0.1.0...
[INFO] checking argmin-observer-slog-0.1.0 against master#5a45ab9738330fb317d49e3594c2db5248b1e971 for pr-136303
[INFO] extracting crate argmin-observer-slog 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate argmin-observer-slog 0.1.0 on toolchain 5a45ab9738330fb317d49e3594c2db5248b1e971
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate argmin-observer-slog 0.1.0
[INFO] finished tweaking crates.io crate argmin-observer-slog 0.1.0
[INFO] tweaked toml for crates.io crate argmin-observer-slog 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "generate-lockfile" "--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/ar/gm/argmin, error: No space left on device (os error 28)
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 70 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `argmin = "^0.10.0"` (locked to 0.10.0)
[INFO] [stderr] candidate versions found which didn't match: 0.8.0, 0.7.0, 0.6.0, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `argmin-observer-slog v0.1.0 (/workspace/builds/worker-7-tc1/source)`
[INFO] [stderr] if you are looking for the prerelease package it needs to be specified explicitly
[INFO] [stderr]     argmin = { version = "0.6.0-rc.2" }


command failed: exit status: 101

    Updating crates.io index
error: failed to select a version for the requirement `argmin = "^0.10.0"` (locked to 0.10.0)
candidate versions found which didn't match: 0.8.0, 0.7.0, 0.6.0, ...
location searched: crates.io index
required by package `argmin-observer-slog v0.1.0 (/workspace/builds/worker-7-tc1/source)`
if you are looking for the prerelease package it needs to be specified explicitly
    argmin = { version = "0.6.0-rc.2" }