[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#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck_proc_macro2" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loiclec/fuzzcheck_proc_macro2 on toolchain 8424f8e8cdf07010967a57584fd647b30e930d4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "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-2-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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 `libc`.
[INFO] [stderr]     ... required by 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-2-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^0.2.126` are: 0.2.152, 0.2.151, 0.2.150, 0.2.149, 0.2.148, 0.2.147, 0.2.146, 0.2.144, 0.2.143, 0.2.142, 0.2.141, 0.2.140, 0.2.139, 0.2.138, 0.2.137, 0.2.136, 0.2.135, 0.2.134, 0.2.133, 0.2.132, 0.2.131, 0.2.129, 0.2.127, 0.2.126
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `libc v0.2.119`
[INFO] [stderr]     ... which satisfies dependency `libc = "^0.2.64"` (locked to 0.2.119) of package `getrandom v0.2.5`
[INFO] [stderr]     ... which satisfies dependency `getrandom = "^0.2.3"` (locked to 0.2.5) of package `ahash v0.7.6`
[INFO] [stderr]     ... which satisfies dependency `ahash = "^0.7.6"` (locked to 0.7.6) 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-2-tc1/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `libc` 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.
[INFO] checking loiclec/fuzzcheck_proc_macro2 against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck_proc_macro2" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loiclec/fuzzcheck_proc_macro2 on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "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-2-tc2/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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 `libc`.
[INFO] [stderr]     ... required by 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-2-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.2.126` are: 0.2.152, 0.2.151, 0.2.150, 0.2.149, 0.2.148, 0.2.147, 0.2.146, 0.2.144, 0.2.143, 0.2.142, 0.2.141, 0.2.140, 0.2.139, 0.2.138, 0.2.137, 0.2.136, 0.2.135, 0.2.134, 0.2.133, 0.2.132, 0.2.131, 0.2.129, 0.2.127, 0.2.126
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `libc v0.2.119`
[INFO] [stderr]     ... which satisfies dependency `libc = "^0.2.64"` (locked to 0.2.119) of package `getrandom v0.2.5`
[INFO] [stderr]     ... which satisfies dependency `getrandom = "^0.2.3"` (locked to 0.2.5) of package `ahash v0.7.6`
[INFO] [stderr]     ... which satisfies dependency `ahash = "^0.7.6"` (locked to 0.7.6) 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-2-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `libc` which could resolve this conflict
[INFO] checking loiclec/fuzzcheck_proc_macro2 against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck_proc_macro2" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loiclec/fuzzcheck_proc_macro2 on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "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-2-tc2/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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 `libc`.
[INFO] [stderr]     ... required by 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-2-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.2.126` are: 0.2.152, 0.2.151, 0.2.150, 0.2.149, 0.2.148, 0.2.147, 0.2.146, 0.2.144, 0.2.143, 0.2.142, 0.2.141, 0.2.140, 0.2.139, 0.2.138, 0.2.137, 0.2.136, 0.2.135, 0.2.134, 0.2.133, 0.2.132, 0.2.131, 0.2.129, 0.2.127, 0.2.126
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `libc v0.2.119`
[INFO] [stderr]     ... which satisfies dependency `libc = "^0.2.64"` (locked to 0.2.119) of package `getrandom v0.2.5`
[INFO] [stderr]     ... which satisfies dependency `getrandom = "^0.2.3"` (locked to 0.2.5) of package `ahash v0.7.6`
[INFO] [stderr]     ... which satisfies dependency `ahash = "^0.7.6"` (locked to 0.7.6) 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-2-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `libc` which could resolve this conflict
[INFO] checking loiclec/fuzzcheck_proc_macro2 against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck_proc_macro2" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loiclec/fuzzcheck_proc_macro2 on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "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-2-tc2/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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-2-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.37` are: 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-2-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `proc-macro2` which could resolve this conflict
[INFO] checking loiclec/fuzzcheck_proc_macro2 against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck_proc_macro2" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loiclec/fuzzcheck_proc_macro2 on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "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-2-tc2/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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 `libc`.
[INFO] [stderr]     ... required by 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-2-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.2.126` are: 0.2.152, 0.2.151, 0.2.150, 0.2.149, 0.2.148, 0.2.147, 0.2.146, 0.2.144, 0.2.143, 0.2.142, 0.2.141, 0.2.140, 0.2.139, 0.2.138, 0.2.137, 0.2.136, 0.2.135, 0.2.134, 0.2.133, 0.2.132, 0.2.131, 0.2.129, 0.2.127, 0.2.126
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `libc v0.2.119`
[INFO] [stderr]     ... which satisfies dependency `libc = "^0.2.64"` (locked to 0.2.119) of package `getrandom v0.2.5`
[INFO] [stderr]     ... which satisfies dependency `getrandom = "^0.2.3"` (locked to 0.2.5) of package `ahash v0.7.6`
[INFO] [stderr]     ... which satisfies dependency `ahash = "^0.7.6"` (locked to 0.7.6) 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-2-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `libc` which could resolve this conflict
[INFO] checking loiclec/fuzzcheck_proc_macro2 against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck_proc_macro2" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loiclec/fuzzcheck_proc_macro2 on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "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-2-tc2/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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 `libc`.
[INFO] [stderr]     ... required by 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-2-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^0.2.126` are: 0.2.152, 0.2.151, 0.2.150, 0.2.149, 0.2.148, 0.2.147, 0.2.146, 0.2.144, 0.2.143, 0.2.142, 0.2.141, 0.2.140, 0.2.139, 0.2.138, 0.2.137, 0.2.136, 0.2.135, 0.2.134, 0.2.133, 0.2.132, 0.2.131, 0.2.129, 0.2.127, 0.2.126
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `libc v0.2.119`
[INFO] [stderr]     ... which satisfies dependency `libc = "^0.2.64"` (locked to 0.2.119) of package `getrandom v0.2.5`
[INFO] [stderr]     ... which satisfies dependency `getrandom = "^0.2.3"` (locked to 0.2.5) of package `ahash v0.7.6`
[INFO] [stderr]     ... which satisfies dependency `ahash = "^0.7.6"` (locked to 0.7.6) 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-2-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `libc` 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.