[INFO] fetching crate wasm-reader-traits 0.1.1...
[INFO] testing wasm-reader-traits-0.1.1 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate wasm-reader-traits 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate wasm-reader-traits 0.1.1
[INFO] finished tweaking crates.io crate wasm-reader-traits 0.1.1
[INFO] tweaked toml for crates.io crate wasm-reader-traits 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wasm-reader-traits 0.1.1 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] [stderr]       Adding frunk_core v0.3.2 (available: v0.4.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded frunk_core v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9cebdc848ed0d9ba595276f28865a707ac09be9ef1d30f3da6ec1f5dc01e733
[INFO] running `Command { std: "docker" "start" "-a" "d9cebdc848ed0d9ba595276f28865a707ac09be9ef1d30f3da6ec1f5dc01e733", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9cebdc848ed0d9ba595276f28865a707ac09be9ef1d30f3da6ec1f5dc01e733", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9cebdc848ed0d9ba595276f28865a707ac09be9ef1d30f3da6ec1f5dc01e733", kill_on_drop: false }`
[INFO] [stdout] d9cebdc848ed0d9ba595276f28865a707ac09be9ef1d30f3da6ec1f5dc01e733
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2dfd9ed7803c447660ea4bb9cd81a91d0e4ee0c24c0e4088668b2e4c9cbb56b
[INFO] running `Command { std: "docker" "start" "-a" "c2dfd9ed7803c447660ea4bb9cd81a91d0e4ee0c24c0e4088668b2e4c9cbb56b", kill_on_drop: false }`
[INFO] [stderr]    Compiling frunk_core v0.3.2
[INFO] [stderr]    Compiling wasm-reader-traits v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     default fn position(&mut self) -> Option<u64> {
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]    = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout]    = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]    = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.37s
[INFO] running `Command { std: "docker" "inspect" "c2dfd9ed7803c447660ea4bb9cd81a91d0e4ee0c24c0e4088668b2e4c9cbb56b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2dfd9ed7803c447660ea4bb9cd81a91d0e4ee0c24c0e4088668b2e4c9cbb56b", kill_on_drop: false }`
[INFO] [stdout] c2dfd9ed7803c447660ea4bb9cd81a91d0e4ee0c24c0e4088668b2e4c9cbb56b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c72a55de6a27b07a6f86e935ac5349f0bd4c3a80ab55142241a19982c090d8a
[INFO] running `Command { std: "docker" "start" "-a" "4c72a55de6a27b07a6f86e935ac5349f0bd4c3a80ab55142241a19982c090d8a", kill_on_drop: false }`
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     default fn position(&mut self) -> Option<u64> {
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]    = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout]    = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]    = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling wasm-reader-traits v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     default fn position(&mut self) -> Option<u64> {
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]    = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stdout]    = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]    = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "4c72a55de6a27b07a6f86e935ac5349f0bd4c3a80ab55142241a19982c090d8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c72a55de6a27b07a6f86e935ac5349f0bd4c3a80ab55142241a19982c090d8a", kill_on_drop: false }`
[INFO] [stdout] 4c72a55de6a27b07a6f86e935ac5349f0bd4c3a80ab55142241a19982c090d8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c119db0fb4252a8c18fd6a985a24a823ff2cc6571a481ef224869493d176122e
[INFO] running `Command { std: "docker" "start" "-a" "c119db0fb4252a8c18fd6a985a24a823ff2cc6571a481ef224869493d176122e", kill_on_drop: false }`
[INFO] [stderr] warning: specialization is experimental
[INFO] [stderr]   --> src/lib.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     default fn position(&mut self) -> Option<u64> {
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stderr]    = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stderr]    = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stderr]    = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stderr]    = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stderr] 
[INFO] [stderr] warning: `wasm-reader-traits` (lib) generated 1 warning
[INFO] [stderr] warning: `wasm-reader-traits` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wasm_reader_traits-5788b67e9427785d)
[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 wasm_reader_traits
[INFO] [stderr] warning: specialization is experimental
[INFO] [stderr]   --> src/lib.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     default fn position(&mut self) -> Option<u64> {
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stderr]    = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stderr]    = note: this compiler was built on 2026-04-24; consider upgrading it if it is out of date
[INFO] [stderr]    = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stderr]    = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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" "c119db0fb4252a8c18fd6a985a24a823ff2cc6571a481ef224869493d176122e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c119db0fb4252a8c18fd6a985a24a823ff2cc6571a481ef224869493d176122e", kill_on_drop: false }`
[INFO] [stdout] c119db0fb4252a8c18fd6a985a24a823ff2cc6571a481ef224869493d176122e
