[INFO] fetching crate errstack 0.0.1...
[INFO] testing errstack-0.0.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate errstack 0.0.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate errstack 0.0.1
[INFO] finished tweaking crates.io crate errstack 0.0.1
[INFO] tweaked toml for crates.io crate errstack 0.0.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate errstack 0.0.1 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6558c2a393f01d16cbcd94e71e064f76cc03f927633c1c1a4f5b7144c9e53f1
[INFO] running `Command { std: "docker" "start" "-a" "b6558c2a393f01d16cbcd94e71e064f76cc03f927633c1c1a4f5b7144c9e53f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6558c2a393f01d16cbcd94e71e064f76cc03f927633c1c1a4f5b7144c9e53f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6558c2a393f01d16cbcd94e71e064f76cc03f927633c1c1a4f5b7144c9e53f1", kill_on_drop: false }`
[INFO] [stdout] b6558c2a393f01d16cbcd94e71e064f76cc03f927633c1c1a4f5b7144c9e53f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c66bfa8f12811d846a88ee3552f2d939498c6e6dbc7ae7f1cc69563861a564f
[INFO] running `Command { std: "docker" "start" "-a" "9c66bfa8f12811d846a88ee3552f2d939498c6e6dbc7ae7f1cc69563861a564f", kill_on_drop: false }`
[INFO] [stderr]    Compiling errstack v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "9c66bfa8f12811d846a88ee3552f2d939498c6e6dbc7ae7f1cc69563861a564f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c66bfa8f12811d846a88ee3552f2d939498c6e6dbc7ae7f1cc69563861a564f", kill_on_drop: false }`
[INFO] [stdout] 9c66bfa8f12811d846a88ee3552f2d939498c6e6dbc7ae7f1cc69563861a564f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07dcfb052973419a97c23e41b79578d30e7d9f7c78306f95d9a6e1335369793c
[INFO] running `Command { std: "docker" "start" "-a" "07dcfb052973419a97c23e41b79578d30e7d9f7c78306f95d9a6e1335369793c", kill_on_drop: false }`
[INFO] [stderr]    Compiling errstack v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "07dcfb052973419a97c23e41b79578d30e7d9f7c78306f95d9a6e1335369793c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07dcfb052973419a97c23e41b79578d30e7d9f7c78306f95d9a6e1335369793c", kill_on_drop: false }`
[INFO] [stdout] 07dcfb052973419a97c23e41b79578d30e7d9f7c78306f95d9a6e1335369793c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] db3e77996f597209f18476d6762e180ff2383350da5bb19d6951b81330b4ffd8
[INFO] running `Command { std: "docker" "start" "-a" "db3e77996f597209f18476d6762e180ff2383350da5bb19d6951b81330b4ffd8", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/errstack-136a5f9f691e62f4)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests errstack
[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] [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" "db3e77996f597209f18476d6762e180ff2383350da5bb19d6951b81330b4ffd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db3e77996f597209f18476d6762e180ff2383350da5bb19d6951b81330b4ffd8", kill_on_drop: false }`
[INFO] [stdout] db3e77996f597209f18476d6762e180ff2383350da5bb19d6951b81330b4ffd8