[INFO] fetching crate expr-parent 0.1.0...
[INFO] checking expr-parent-0.1.0 against master#8f359beca4e58bc3ae795a666301a8f47023044c for pr-121557
[INFO] extracting crate expr-parent 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate expr-parent 0.1.0 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 expr-parent 0.1.0
[INFO] finished tweaking crates.io crate expr-parent 0.1.0
[INFO] tweaked toml for crates.io crate expr-parent 0.1.0 written to /workspace/builds/worker-2-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] [stderr] error: cyclic package dependency: package `expr-child v0.1.1` depends on itself. Cycle:
[INFO] [stderr] package `expr-child v0.1.1`
[INFO] [stderr]     ... which satisfies dependency `expr-child = "^0.1.0"` of package `expr-parent v0.1.0`
[INFO] [stderr]     ... which satisfies dependency `expr-parent = "0.1.*"` of package `expr-child v0.1.1`
[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.
[INFO] checking expr-parent-0.1.0 against try#80d5fe37e16a0befb4128414cb6a11d544788c0a for pr-121557
[INFO] extracting crate expr-parent 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate expr-parent 0.1.0 on toolchain 80d5fe37e16a0befb4128414cb6a11d544788c0a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate expr-parent 0.1.0
[INFO] finished tweaking crates.io crate expr-parent 0.1.0
[INFO] tweaked toml for crates.io crate expr-parent 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: cyclic package dependency: package `expr-child v0.1.1` depends on itself. Cycle:
[INFO] [stderr] package `expr-child v0.1.1`
[INFO] [stderr]     ... which satisfies dependency `expr-child = "^0.1.0"` of package `expr-parent v0.1.0`
[INFO] [stderr]     ... which satisfies dependency `expr-parent = "0.1.*"` of package `expr-child v0.1.1`
[INFO] checking expr-parent-0.1.0 against try#80d5fe37e16a0befb4128414cb6a11d544788c0a for pr-121557
[INFO] extracting crate expr-parent 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate expr-parent 0.1.0 on toolchain 80d5fe37e16a0befb4128414cb6a11d544788c0a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate expr-parent 0.1.0
[INFO] finished tweaking crates.io crate expr-parent 0.1.0
[INFO] tweaked toml for crates.io crate expr-parent 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: cyclic package dependency: package `expr-child v0.1.1` depends on itself. Cycle:
[INFO] [stderr] package `expr-child v0.1.1`
[INFO] [stderr]     ... which satisfies dependency `expr-child = "^0.1.0"` of package `expr-parent v0.1.0`
[INFO] [stderr]     ... which satisfies dependency `expr-parent = "0.1.*"` of package `expr-child v0.1.1`
[INFO] checking expr-parent-0.1.0 against try#80d5fe37e16a0befb4128414cb6a11d544788c0a for pr-121557
[INFO] extracting crate expr-parent 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate expr-parent 0.1.0 on toolchain 80d5fe37e16a0befb4128414cb6a11d544788c0a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate expr-parent 0.1.0
[INFO] finished tweaking crates.io crate expr-parent 0.1.0
[INFO] tweaked toml for crates.io crate expr-parent 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: cyclic package dependency: package `expr-child v0.1.1` depends on itself. Cycle:
[INFO] [stderr] package `expr-child v0.1.1`
[INFO] [stderr]     ... which satisfies dependency `expr-child = "^0.1.0"` of package `expr-parent v0.1.0`
[INFO] [stderr]     ... which satisfies dependency `expr-parent = "0.1.*"` of package `expr-child v0.1.1`
[INFO] checking expr-parent-0.1.0 against try#80d5fe37e16a0befb4128414cb6a11d544788c0a for pr-121557
[INFO] extracting crate expr-parent 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate expr-parent 0.1.0 on toolchain 80d5fe37e16a0befb4128414cb6a11d544788c0a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate expr-parent 0.1.0
[INFO] finished tweaking crates.io crate expr-parent 0.1.0
[INFO] tweaked toml for crates.io crate expr-parent 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: cyclic package dependency: package `expr-child v0.1.1` depends on itself. Cycle:
[INFO] [stderr] package `expr-child v0.1.1`
[INFO] [stderr]     ... which satisfies dependency `expr-child = "^0.1.0"` of package `expr-parent v0.1.0`
[INFO] [stderr]     ... which satisfies dependency `expr-parent = "0.1.*"` of package `expr-child v0.1.1`
[INFO] checking expr-parent-0.1.0 against try#80d5fe37e16a0befb4128414cb6a11d544788c0a for pr-121557
[INFO] extracting crate expr-parent 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate expr-parent 0.1.0 on toolchain 80d5fe37e16a0befb4128414cb6a11d544788c0a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate expr-parent 0.1.0
[INFO] finished tweaking crates.io crate expr-parent 0.1.0
[INFO] tweaked toml for crates.io crate expr-parent 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: cyclic package dependency: package `expr-child v0.1.1` depends on itself. Cycle:
[INFO] [stderr] package `expr-child v0.1.1`
[INFO] [stderr]     ... which satisfies dependency `expr-child = "^0.1.0"` of package `expr-parent v0.1.0`
[INFO] [stderr]     ... which satisfies dependency `expr-parent = "0.1.*"` of package `expr-child v0.1.1`
[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.