[INFO] fetching crate rand_chacha 0.9.0...
[INFO] testing rand_chacha-0.9.0 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate rand_chacha 0.9.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate rand_chacha 0.9.0
[INFO] finished tweaking crates.io crate rand_chacha 0.9.0
[INFO] tweaked toml for crates.io crate rand_chacha 0.9.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rand_chacha 0.9.0 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 rand_chacha 0.9.0 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 = "^2.0.46"` (locked to 2.0.53)
[INFO] [stderr] candidate versions found which didn't match: 1.0.12, 1.0.11, 1.0.10, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `serde_derive v1.0.197`
[INFO] [stderr]     ... which satisfies dependency `serde_derive = "=1.0.197"` (locked to 1.0.197) of package `serde v1.0.197`
[INFO] [stderr]     ... which satisfies dependency `serde = "^1.0"` (locked to 1.0.197) of package `rand_chacha v0.9.0 (/workspace/builds/worker-7-tc2/source)`
[INFO] testing rand_chacha-0.9.0 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate rand_chacha 0.9.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate rand_chacha 0.9.0
[INFO] finished tweaking crates.io crate rand_chacha 0.9.0
[INFO] tweaked toml for crates.io crate rand_chacha 0.9.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rand_chacha 0.9.0 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 rand_chacha 0.9.0 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 = "^2.0.46"` (locked to 2.0.53)
[INFO] [stderr] candidate versions found which didn't match: 1.0.12, 1.0.11, 1.0.10, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `serde_derive v1.0.197`
[INFO] [stderr]     ... which satisfies dependency `serde_derive = "=1.0.197"` (locked to 1.0.197) of package `serde v1.0.197`
[INFO] [stderr]     ... which satisfies dependency `serde = "^1.0"` (locked to 1.0.197) of package `rand_chacha v0.9.0 (/workspace/builds/worker-7-tc2/source)`
[INFO] testing rand_chacha-0.9.0 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate rand_chacha 0.9.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate rand_chacha 0.9.0
[INFO] finished tweaking crates.io crate rand_chacha 0.9.0
[INFO] tweaked toml for crates.io crate rand_chacha 0.9.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rand_chacha 0.9.0 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 rand_chacha 0.9.0 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 = "^2.0.46"` (locked to 2.0.53)
[INFO] [stderr] candidate versions found which didn't match: 1.0.12, 1.0.11, 1.0.10, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `serde_derive v1.0.197`
[INFO] [stderr]     ... which satisfies dependency `serde_derive = "=1.0.197"` (locked to 1.0.197) of package `serde v1.0.197`
[INFO] [stderr]     ... which satisfies dependency `serde = "^1.0"` (locked to 1.0.197) of package `rand_chacha v0.9.0 (/workspace/builds/worker-7-tc2/source)`
[INFO] testing rand_chacha-0.9.0 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate rand_chacha 0.9.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate rand_chacha 0.9.0
[INFO] finished tweaking crates.io crate rand_chacha 0.9.0
[INFO] tweaked toml for crates.io crate rand_chacha 0.9.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rand_chacha 0.9.0 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 rand_chacha 0.9.0 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 = "^2.0.46"` (locked to 2.0.53)
[INFO] [stderr] candidate versions found which didn't match: 1.0.12, 1.0.11, 1.0.10, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `serde_derive v1.0.197`
[INFO] [stderr]     ... which satisfies dependency `serde_derive = "=1.0.197"` (locked to 1.0.197) of package `serde v1.0.197`
[INFO] [stderr]     ... which satisfies dependency `serde = "^1.0"` (locked to 1.0.197) of package `rand_chacha v0.9.0 (/workspace/builds/worker-7-tc2/source)`
[INFO] testing rand_chacha-0.9.0 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate rand_chacha 0.9.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate rand_chacha 0.9.0
[INFO] finished tweaking crates.io crate rand_chacha 0.9.0
[INFO] tweaked toml for crates.io crate rand_chacha 0.9.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rand_chacha 0.9.0 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 rand_chacha 0.9.0 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 = "^2.0.46"` (locked to 2.0.53)
[INFO] [stderr] candidate versions found which didn't match: 1.0.12, 1.0.11, 1.0.10, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `serde_derive v1.0.197`
[INFO] [stderr]     ... which satisfies dependency `serde_derive = "=1.0.197"` (locked to 1.0.197) of package `serde v1.0.197`
[INFO] [stderr]     ... which satisfies dependency `serde = "^1.0"` (locked to 1.0.197) of package `rand_chacha v0.9.0 (/workspace/builds/worker-7-tc2/source)`


command failed: exit status: 101

    Updating crates.io index
error: failed to select a version for the requirement `syn = "^2.0.46"` (locked to 2.0.53)
candidate versions found which didn't match: 1.0.12, 1.0.11, 1.0.10, ...
location searched: crates.io index
required by package `serde_derive v1.0.197`
    ... which satisfies dependency `serde_derive = "=1.0.197"` (locked to 1.0.197) of package `serde v1.0.197`
    ... which satisfies dependency `serde = "^1.0"` (locked to 1.0.197) of package `rand_chacha v0.9.0 (/workspace/builds/worker-7-tc2/source)`