[INFO] fetching crate test-log-macros 0.2.18...
[INFO] testing test-log-macros-0.2.18 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate test-log-macros 0.2.18 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate test-log-macros 0.2.18
[INFO] finished tweaking crates.io crate test-log-macros 0.2.18
[INFO] tweaked toml for crates.io crate test-log-macros 0.2.18 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate test-log-macros 0.2.18 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate test-log-macros 0.2.18 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" "+beta-2025-09-21" "fetch" "--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 the requirement `syn = "^2.0"` (locked to 2.0.104)
[INFO] [stderr] candidate versions found which didn't match: 2.0.6, 2.0.5, 2.0.4, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `test-log-macros v0.2.18 (/workspace/builds/worker-7-tc2/source)`
[INFO] testing test-log-macros-0.2.18 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate test-log-macros 0.2.18 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate test-log-macros 0.2.18
[INFO] finished tweaking crates.io crate test-log-macros 0.2.18
[INFO] tweaked toml for crates.io crate test-log-macros 0.2.18 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate test-log-macros 0.2.18 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate test-log-macros 0.2.18 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `syn = "^2.0"` (locked to 2.0.104)
[INFO] [stderr] candidate versions found which didn't match: 2.0.6, 2.0.5, 2.0.4, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `test-log-macros v0.2.18 (/workspace/builds/worker-7-tc2/source)`
[INFO] testing test-log-macros-0.2.18 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate test-log-macros 0.2.18 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate test-log-macros 0.2.18
[INFO] finished tweaking crates.io crate test-log-macros 0.2.18
[INFO] tweaked toml for crates.io crate test-log-macros 0.2.18 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate test-log-macros 0.2.18 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate test-log-macros 0.2.18 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `syn = "^2.0"` (locked to 2.0.104)
[INFO] [stderr] candidate versions found which didn't match: 2.0.6, 2.0.5, 2.0.4, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `test-log-macros v0.2.18 (/workspace/builds/worker-7-tc2/source)`
[INFO] testing test-log-macros-0.2.18 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate test-log-macros 0.2.18 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate test-log-macros 0.2.18
[INFO] finished tweaking crates.io crate test-log-macros 0.2.18
[INFO] tweaked toml for crates.io crate test-log-macros 0.2.18 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate test-log-macros 0.2.18 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate test-log-macros 0.2.18 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" "+beta-2025-09-21" "fetch" "--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 the requirement `syn = "^2.0"` (locked to 2.0.104)
[INFO] [stderr] candidate versions found which didn't match: 2.0.6, 2.0.5, 2.0.4, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `test-log-macros v0.2.18 (/workspace/builds/worker-7-tc2/source)`
[INFO] testing test-log-macros-0.2.18 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate test-log-macros 0.2.18 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate test-log-macros 0.2.18
[INFO] finished tweaking crates.io crate test-log-macros 0.2.18
[INFO] tweaked toml for crates.io crate test-log-macros 0.2.18 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate test-log-macros 0.2.18 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate test-log-macros 0.2.18 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" "+beta-2025-09-21" "fetch" "--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 the requirement `syn = "^2.0"` (locked to 2.0.104)
[INFO] [stderr] candidate versions found which didn't match: 2.0.6, 2.0.5, 2.0.4, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `test-log-macros v0.2.18 (/workspace/builds/worker-7-tc2/source)`


command failed: exit status: 101

    Blocking waiting for file lock on package cache
    Updating crates.io index
error: failed to select a version for the requirement `syn = "^2.0"` (locked to 2.0.104)
candidate versions found which didn't match: 2.0.6, 2.0.5, 2.0.4, ...
location searched: crates.io index
required by package `test-log-macros v0.2.18 (/workspace/builds/worker-7-tc2/source)`