[INFO] cloning repository https://github.com/lktrace/lktrace-backend
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lktrace/lktrace-backend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flktrace%2Flktrace-backend", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flktrace%2Flktrace-backend'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4970feae012ff449283d66aaaa39ab227b26453d
[INFO] testing lktrace/lktrace-backend against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flktrace%2Flktrace-backend" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lktrace/lktrace-backend
[INFO] finished tweaking git repo https://github.com/lktrace/lktrace-backend
[INFO] tweaked toml for git repo https://github.com/lktrace/lktrace-backend written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lktrace/lktrace-backend 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 git repo https://github.com/lktrace/lktrace-backend 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4eb70fb675ce9234ae74e297e519c0ee42b7ee91b3d5dd38e3252b9d3723eefa
[INFO] running `Command { std: "docker" "start" "-a" "4eb70fb675ce9234ae74e297e519c0ee42b7ee91b3d5dd38e3252b9d3723eefa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4eb70fb675ce9234ae74e297e519c0ee42b7ee91b3d5dd38e3252b9d3723eefa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4eb70fb675ce9234ae74e297e519c0ee42b7ee91b3d5dd38e3252b9d3723eefa", kill_on_drop: false }`
[INFO] [stdout] 4eb70fb675ce9234ae74e297e519c0ee42b7ee91b3d5dd38e3252b9d3723eefa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f0f390790c793d54109f797d9aa73c0541021817393c66031dc033e3f69ffaa6
[INFO] running `Command { std: "docker" "start" "-a" "f0f390790c793d54109f797d9aa73c0541021817393c66031dc033e3f69ffaa6", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling time-macros v0.2.18
[INFO] [stderr]    Compiling clap_builder v4.5.18
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling time v0.3.36
[INFO] [stderr]    Compiling simplelog v0.12.2
[INFO] [stderr]    Compiling clap_derive v4.5.18
[INFO] [stderr]    Compiling clap v4.5.18
[INFO] [stderr]    Compiling lktrace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/event.rs:452:33
[INFO] [stdout]     |
[INFO] [stdout] 452 |             let nset = unsafe { mem::transmute::<[u8; 8], u64>(buf) };
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 452 -             let nset = unsafe { mem::transmute::<[u8; 8], u64>(buf) };
[INFO] [stdout] 452 +             let nset = unsafe { u64::from_ne_bytes(buf) };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/event.rs:462:33
[INFO] [stdout]     |
[INFO] [stdout] 462 |             let oset = unsafe { mem::transmute::<[u8; 8], u64>(buf) };
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 462 -             let oset = unsafe { mem::transmute::<[u8; 8], u64>(buf) };
[INFO] [stdout] 462 +             let oset = unsafe { u64::from_ne_bytes(buf) };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.96s
[INFO] running `Command { std: "docker" "inspect" "f0f390790c793d54109f797d9aa73c0541021817393c66031dc033e3f69ffaa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0f390790c793d54109f797d9aa73c0541021817393c66031dc033e3f69ffaa6", kill_on_drop: false }`
[INFO] [stdout] f0f390790c793d54109f797d9aa73c0541021817393c66031dc033e3f69ffaa6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7b3fb5ea8cd92ef3d115959ca9e9b1835c24331b9611860f633cd9f63ec5e287
[INFO] running `Command { std: "docker" "start" "-a" "7b3fb5ea8cd92ef3d115959ca9e9b1835c24331b9611860f633cd9f63ec5e287", kill_on_drop: false }`
[INFO] [stderr]    Compiling lktrace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/event.rs:452:33
[INFO] [stdout]     |
[INFO] [stdout] 452 |             let nset = unsafe { mem::transmute::<[u8; 8], u64>(buf) };
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 452 -             let nset = unsafe { mem::transmute::<[u8; 8], u64>(buf) };
[INFO] [stdout] 452 +             let nset = unsafe { u64::from_ne_bytes(buf) };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/event.rs:462:33
[INFO] [stdout]     |
[INFO] [stdout] 462 |             let oset = unsafe { mem::transmute::<[u8; 8], u64>(buf) };
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 462 -             let oset = unsafe { mem::transmute::<[u8; 8], u64>(buf) };
[INFO] [stdout] 462 +             let oset = unsafe { u64::from_ne_bytes(buf) };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "7b3fb5ea8cd92ef3d115959ca9e9b1835c24331b9611860f633cd9f63ec5e287", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b3fb5ea8cd92ef3d115959ca9e9b1835c24331b9611860f633cd9f63ec5e287", kill_on_drop: false }`
[INFO] [stdout] 7b3fb5ea8cd92ef3d115959ca9e9b1835c24331b9611860f633cd9f63ec5e287
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f76047237e3fbcac78eedde298e65142399704ee595ecd57f0d6f8b259fbf27e
[INFO] running `Command { std: "docker" "start" "-a" "f76047237e3fbcac78eedde298e65142399704ee595ecd57f0d6f8b259fbf27e", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary transmute
[INFO] [stderr]    --> src/event.rs:452:33
[INFO] [stderr]     |
[INFO] [stderr] 452 |             let nset = unsafe { mem::transmute::<[u8; 8], u64>(buf) };
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stderr]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stderr] help: replace this with
[INFO] [stderr]     |
[INFO] [stderr] 452 -             let nset = unsafe { mem::transmute::<[u8; 8], u64>(buf) };
[INFO] [stderr] 452 +             let nset = unsafe { u64::from_ne_bytes(buf) };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary transmute
[INFO] [stderr]    --> src/event.rs:462:33
[INFO] [stderr]     |
[INFO] [stderr] 462 |             let oset = unsafe { mem::transmute::<[u8; 8], u64>(buf) };
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stderr] help: replace this with
[INFO] [stderr]     |
[INFO] [stderr] 462 -             let oset = unsafe { mem::transmute::<[u8; 8], u64>(buf) };
[INFO] [stderr] 462 +             let oset = unsafe { u64::from_ne_bytes(buf) };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `lktrace` (bin "lktrace" test) generated 2 warnings (run `cargo fix --bin "lktrace" -p lktrace --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/lktrace-aef4a0c339624c23)
[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" "f76047237e3fbcac78eedde298e65142399704ee595ecd57f0d6f8b259fbf27e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f76047237e3fbcac78eedde298e65142399704ee595ecd57f0d6f8b259fbf27e", kill_on_drop: false }`
[INFO] [stdout] f76047237e3fbcac78eedde298e65142399704ee595ecd57f0d6f8b259fbf27e
