[INFO] fetching crate iron_session 0.0.4...
[INFO] checking iron_session-0.0.4 against master#8f359beca4e58bc3ae795a666301a8f47023044c for pr-121557
[INFO] extracting crate iron_session 0.0.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate iron_session 0.0.4 on toolchain 8f359beca4e58bc3ae795a666301a8f47023044c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iron_session 0.0.4
[INFO] finished tweaking crates.io crate iron_session 0.0.4
[INFO] tweaked toml for crates.io crate iron_session 0.0.4 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" "+8f359beca4e58bc3ae795a666301a8f47023044c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded iron v0.3.1
[INFO] [stderr]   Downloaded error v0.1.9
[INFO] [stderr]   Downloaded openssl-sys-extras v0.7.14
[INFO] [stderr]   Downloaded cookie v0.2.5
[INFO] [stderr]   Downloaded conduit-mime-types v0.7.3
[INFO] [stderr]   Downloaded openssl v0.7.14
[INFO] [stderr]   Downloaded num_cpus v0.2.13
[INFO] [stderr]   Downloaded traitobject v0.0.1
[INFO] [stderr]   Downloaded mime v0.1.3
[INFO] [stderr]   Downloaded uuid v0.1.18
[INFO] [stderr]   Downloaded serde v0.6.15
[INFO] [stderr]   Downloaded hpack v0.2.0
[INFO] [stderr]   Downloaded hyper v0.7.2
[INFO] [stderr]   Downloaded iron v0.2.6
[INFO] [stderr] error: failed to parse manifest at `/workspace/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/iron-0.2.6/Cargo.toml`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse the version requirement `0.2*` for dependency `plugin`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   expected comma after minor version number, found '*'
[ERROR] this task or one of its parent failed!
[ERROR] command failed: exit status: 101
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.