[INFO] fetching crate servant-log 0.1.0...
[INFO] testing servant-log-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate servant-log 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate servant-log 0.1.0
[INFO] finished tweaking crates.io crate servant-log 0.1.0
[INFO] tweaked toml for crates.io crate servant-log 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate servant-log 0.1.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate servant-log 0.1.0 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-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f6e948c20bbd0ca6d7a1ac6ef0e76c08d6621d33d0ba876086203905f3ff2cf
[INFO] running `Command { std: "docker" "start" "-a" "0f6e948c20bbd0ca6d7a1ac6ef0e76c08d6621d33d0ba876086203905f3ff2cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f6e948c20bbd0ca6d7a1ac6ef0e76c08d6621d33d0ba876086203905f3ff2cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f6e948c20bbd0ca6d7a1ac6ef0e76c08d6621d33d0ba876086203905f3ff2cf", kill_on_drop: false }`
[INFO] [stdout] 0f6e948c20bbd0ca6d7a1ac6ef0e76c08d6621d33d0ba876086203905f3ff2cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 693bd113feebacc5ec6a0e7024165d35d66b2241ac1370d939ba6e63b56d08f2
[INFO] running `Command { std: "docker" "start" "-a" "693bd113feebacc5ec6a0e7024165d35d66b2241ac1370d939ba6e63b56d08f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling smallvec v0.6.10
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling chrono v0.4.9
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling ring-channel v0.7.0
[INFO] [stderr]    Compiling servant-log v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> src/ring_logger/logger.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |         assert!(SENDER.is_none());
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static
[INFO] [stdout]   --> src/ring_logger/logger.rs:94:40
[INFO] [stdout]    |
[INFO] [stdout] 94 |             if let Some(tx) = unsafe { SENDER.as_mut() } {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.30s
[INFO] running `Command { std: "docker" "inspect" "693bd113feebacc5ec6a0e7024165d35d66b2241ac1370d939ba6e63b56d08f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "693bd113feebacc5ec6a0e7024165d35d66b2241ac1370d939ba6e63b56d08f2", kill_on_drop: false }`
[INFO] [stdout] 693bd113feebacc5ec6a0e7024165d35d66b2241ac1370d939ba6e63b56d08f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9fcdfe51bac7975cb107b1a1d135045e241df72b6c1b153ff9578feca3b10c1f
[INFO] running `Command { std: "docker" "start" "-a" "9fcdfe51bac7975cb107b1a1d135045e241df72b6c1b153ff9578feca3b10c1f", kill_on_drop: false }`
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> src/ring_logger/logger.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |         assert!(SENDER.is_none());
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static
[INFO] [stdout]   --> src/ring_logger/logger.rs:94:40
[INFO] [stdout]    |
[INFO] [stdout] 94 |             if let Some(tx) = unsafe { SENDER.as_mut() } {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling servant-log v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> src/ring_logger/logger.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |         assert!(SENDER.is_none());
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static
[INFO] [stdout]   --> src/ring_logger/logger.rs:94:40
[INFO] [stdout]    |
[INFO] [stdout] 94 |             if let Some(tx) = unsafe { SENDER.as_mut() } {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "9fcdfe51bac7975cb107b1a1d135045e241df72b6c1b153ff9578feca3b10c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fcdfe51bac7975cb107b1a1d135045e241df72b6c1b153ff9578feca3b10c1f", kill_on_drop: false }`
[INFO] [stdout] 9fcdfe51bac7975cb107b1a1d135045e241df72b6c1b153ff9578feca3b10c1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6b696b23475ff9da3dc42ccad0bd5874ec3e23ad00137f6bef5698285ae66d19
[INFO] running `Command { std: "docker" "start" "-a" "6b696b23475ff9da3dc42ccad0bd5874ec3e23ad00137f6bef5698285ae66d19", kill_on_drop: false }`
[INFO] [stderr] warning: creating a shared reference to mutable static
[INFO] [stderr]   --> src/ring_logger/logger.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |         assert!(SENDER.is_none());
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stderr]    |
[INFO] [stderr]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stderr]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: creating a mutable reference to mutable static
[INFO] [stderr]   --> src/ring_logger/logger.rs:94:40
[INFO] [stderr]    |
[INFO] [stderr] 94 |             if let Some(tx) = unsafe { SENDER.as_mut() } {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stderr]    |
[INFO] [stderr]    = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `servant-log` (lib) generated 2 warnings
[INFO] [stderr] warning: `servant-log` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/servant_log-d3d589ff1a31c887)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests servant_log
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6b696b23475ff9da3dc42ccad0bd5874ec3e23ad00137f6bef5698285ae66d19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b696b23475ff9da3dc42ccad0bd5874ec3e23ad00137f6bef5698285ae66d19", kill_on_drop: false }`
[INFO] [stdout] 6b696b23475ff9da3dc42ccad0bd5874ec3e23ad00137f6bef5698285ae66d19
