[INFO] fetching crate guid-macro-impl 0.1.0...
[INFO] checking guid-macro-impl-0.1.0 against master#fd0c901b00ee1e08a250039cdb90258603497e20 for pr-153692
[INFO] extracting crate guid-macro-impl 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate guid-macro-impl 0.1.0
[INFO] finished tweaking crates.io crate guid-macro-impl 0.1.0
[INFO] tweaked toml for crates.io crate guid-macro-impl 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate guid-macro-impl 0.1.0 on toolchain fd0c901b00ee1e08a250039cdb90258603497e20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fd0c901b00ee1e08a250039cdb90258603497e20" "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" "+fd0c901b00ee1e08a250039cdb90258603497e20" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `conv`.
[INFO] [stderr]     ... required by package `chomp v0.3.1`
[INFO] [stderr]     ... which satisfies dependency `chomp = "^0.3.1"` of package `guid-macro-impl v0.1.0 (/workspace/builds/worker-5-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^0.3.3` are: 0.3.3
[INFO] [stderr] 
[INFO] [stderr] package `chomp` depends on `conv` with feature `std` but `conv` does not have that feature.
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `conv` which could resolve this conflict


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: command failed: exit status: 101
       
           Updating crates.io index
       error: failed to select a version for `conv`.
           ... required by package `chomp v0.3.1`
           ... which satisfies dependency `chomp = "^0.3.1"` of package `guid-macro-impl v0.1.0 (/workspace/builds/worker-5-tc1/source)`
       versions that meet the requirements `^0.3.3` are: 0.3.3
       
       package `chomp` depends on `conv` with feature `std` but `conv` does not have that feature.
       
       
       failed to select a version for `conv` which could resolve this conflict