[INFO] fetching crate xp-channel 0.3.7...
[INFO] checking xp-channel-0.3.7 against master#1fe72d35998dea48aeecaf7fc07783b0b553f24f for pr-154992-2
[INFO] extracting crate xp-channel 0.3.7 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate xp-channel 0.3.7
[INFO] finished tweaking crates.io crate xp-channel 0.3.7
[INFO] tweaked toml for crates.io crate xp-channel 0.3.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xp-channel 0.3.7 on toolchain 1fe72d35998dea48aeecaf7fc07783b0b553f24f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "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" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "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: failed to select a version for `xcm`.
[INFO] [stderr]     ... required by package `xp-channel v0.3.7 (/workspace/builds/worker-4-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^0` are: 0.0.1
[INFO] [stderr] 
[INFO] [stderr] package `xp-channel` depends on `xcm` with feature `std` but `xcm` does not have that feature.
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `xcm` which could resolve this conflict


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: command failed: exit status: 101
       
           Blocking waiting for file lock on package cache
           Updating crates.io index
       error: failed to select a version for `xcm`.
           ... required by package `xp-channel v0.3.7 (/workspace/builds/worker-4-tc1/source)`
       versions that meet the requirements `^0` are: 0.0.1
       
       package `xp-channel` depends on `xcm` with feature `std` but `xcm` does not have that feature.
       
       
       failed to select a version for `xcm` which could resolve this conflict