[INFO] fetching crate expr-child 0.1.1...
[INFO] testing expr-child-0.1.1 against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] extracting crate expr-child 0.1.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate expr-child 0.1.1
[INFO] finished tweaking crates.io crate expr-child 0.1.1
[INFO] tweaked toml for crates.io crate expr-child 0.1.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate expr-child 0.1.1 on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "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] error: cyclic package dependency: package `expr-parent v0.1.0` depends on itself. Cycle:
[INFO] [stderr] package `expr-parent v0.1.0`
[INFO] [stderr]     ... which satisfies dependency `expr-parent = "0.1.*"` of 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 (/workspace/builds/worker-3-tc1/source)`


command failed: exit status: 101

    Blocking waiting for file lock on package cache
    Updating crates.io index
error: cyclic package dependency: package `expr-parent v0.1.0` depends on itself. Cycle:
package `expr-parent v0.1.0`
    ... which satisfies dependency `expr-parent = "0.1.*"` of package `expr-child v0.1.1`
    ... which satisfies dependency `expr-child = "^0.1.0"` of package `expr-parent v0.1.0`
    ... which satisfies dependency `expr-parent = "0.1.*"` of package `expr-child v0.1.1 (/workspace/builds/worker-3-tc1/source)`