[INFO] cloning repository https://github.com/loiclec/fuzzcheck_proc_macro2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/loiclec/fuzzcheck_proc_macro2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck_proc_macro2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck_proc_macro2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff8a67e014df367bac56b941812ebde8622217fd
[INFO] checking loiclec/fuzzcheck_proc_macro2 against master#d3dd34a1d4a7e25a92a0d65994bb01a5d17c59ee for pr-127481-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck_proc_macro2" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loiclec/fuzzcheck_proc_macro2 on toolchain d3dd34a1d4a7e25a92a0d65994bb01a5d17c59ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d3dd34a1d4a7e25a92a0d65994bb01a5d17c59ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/loiclec/fuzzcheck_proc_macro2
[INFO] finished tweaking git repo https://github.com/loiclec/fuzzcheck_proc_macro2
[INFO] tweaked toml for git repo https://github.com/loiclec/fuzzcheck_proc_macro2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/loiclec/fuzzcheck_proc_macro2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d3dd34a1d4a7e25a92a0d65994bb01a5d17c59ee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition
[INFO] [stderr] (in the `fuzzcheck` dependency)
[INFO] [stderr]     Updating git repository `https://github.com/loiclec/fuzzcheck-rs`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `proc-macro2`.
[INFO] [stderr]     ... required by package `fuzzcheck_mutators_derive v0.12.0 (https://github.com/loiclec/fuzzcheck-rs#9077693a)`
[INFO] [stderr]     ... which satisfies git dependency `fuzzcheck_mutators_derive` of package `fuzzcheck v0.12.1 (https://github.com/loiclec/fuzzcheck-rs#9077693a)`
[INFO] [stderr]     ... which satisfies git dependency `fuzzcheck` of package `fuzzcheck_proc_macro2 v0.1.0 (/workspace/builds/worker-5-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.37` are: 1.0.86, 1.0.85, 1.0.84, 1.0.83, 1.0.82, 1.0.81, 1.0.80, 1.0.79, 1.0.78, 1.0.77, 1.0.76, 1.0.75, 1.0.74, 1.0.73, 1.0.72, 1.0.71, 1.0.70, 1.0.69, 1.0.68, 1.0.67, 1.0.66, 1.0.65, 1.0.64, 1.0.63, 1.0.61, 1.0.60, 1.0.59, 1.0.58, 1.0.57, 1.0.56, 1.0.55, 1.0.54, 1.0.53, 1.0.52, 1.0.51, 1.0.50, 1.0.49, 1.0.48, 1.0.47, 1.0.46, 1.0.45, 1.0.44, 1.0.43, 1.0.42, 1.0.41, 1.0.40, 1.0.39, 1.0.38, 1.0.37
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `proc-macro2 v1.0.36`
[INFO] [stderr]     ... which satisfies dependency `proc-macro2 = "^1.0.36"` (locked to 1.0.36) of package `fuzzcheck_proc_macro2 v0.1.0 (/workspace/builds/worker-5-tc1/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `proc-macro2` which could resolve this conflict
[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.