[INFO] fetching crate fkl-wasm 0.4.0...
[INFO] checking fkl-wasm-0.4.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate fkl-wasm 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate fkl-wasm 0.4.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fkl-wasm 0.4.0
[INFO] finished tweaking crates.io crate fkl-wasm 0.4.0
[INFO] tweaked toml for crates.io crate fkl-wasm 0.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 63 packages
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding serde-wasm-bindgen v0.4.5 (latest: v0.6.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde-wasm-bindgen v0.4.5
[INFO] [stderr]   Downloaded fkl-parser v0.4.0
[INFO] [stderr]   Downloaded fkl-dot v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d91c8cc377c07fd279cbb25e8ccf869e838714f9025f38f4272816628e5211d
[INFO] running `Command { std: "docker" "start" "-a" "0d91c8cc377c07fd279cbb25e8ccf869e838714f9025f38f4272816628e5211d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d91c8cc377c07fd279cbb25e8ccf869e838714f9025f38f4272816628e5211d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d91c8cc377c07fd279cbb25e8ccf869e838714f9025f38f4272816628e5211d", kill_on_drop: false }`
[INFO] [stdout] 0d91c8cc377c07fd279cbb25e8ccf869e838714f9025f38f4272816628e5211d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3decb7768f6592b751a84c942183d5d38c977332f2351e55f285fa4c0a079278
[INFO] running `Command { std: "docker" "start" "-a" "3decb7768f6592b751a84c942183d5d38c977332f2351e55f285fa4c0a079278", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen v0.2.92
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking fkl-dot v0.1.0
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.42
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]     Checking js-sys v0.3.69
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]    Compiling pest v2.7.9
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]    Compiling pest_meta v2.7.9
[INFO] [stderr]    Compiling pest_generator v2.7.9
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.42
[INFO] [stderr]     Checking serde-wasm-bindgen v0.4.5
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.42
[INFO] [stderr]    Compiling pest_derive v2.7.9
[INFO] [stderr]     Checking fkl-parser v0.4.0
[INFO] [stderr]     Checking fkl-wasm v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.86s
[INFO] running `Command { std: "docker" "inspect" "3decb7768f6592b751a84c942183d5d38c977332f2351e55f285fa4c0a079278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3decb7768f6592b751a84c942183d5d38c977332f2351e55f285fa4c0a079278", kill_on_drop: false }`
[INFO] [stdout] 3decb7768f6592b751a84c942183d5d38c977332f2351e55f285fa4c0a079278