[INFO] cloning repository https://github.com/heyimalex/leven_wasm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/heyimalex/leven_wasm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fheyimalex%2Fleven_wasm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fheyimalex%2Fleven_wasm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 961585c1313ddc556f3398e2db9ca2052814f477
[INFO] checking heyimalex/leven_wasm against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fheyimalex%2Fleven_wasm" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/heyimalex/leven_wasm 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 git repo https://github.com/heyimalex/leven_wasm
[INFO] finished tweaking git repo https://github.com/heyimalex/leven_wasm
[INFO] tweaked toml for git repo https://github.com/heyimalex/leven_wasm written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/heyimalex/leven_wasm 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.37
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.37
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.37
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.37
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 0cf7790958a112b32d90f73966d5438603411093ec8efa3a9247dd1136540899
[INFO] running `Command { std: "docker" "start" "-a" "0cf7790958a112b32d90f73966d5438603411093ec8efa3a9247dd1136540899", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cf7790958a112b32d90f73966d5438603411093ec8efa3a9247dd1136540899", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cf7790958a112b32d90f73966d5438603411093ec8efa3a9247dd1136540899", kill_on_drop: false }`
[INFO] [stdout] 0cf7790958a112b32d90f73966d5438603411093ec8efa3a9247dd1136540899
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b69d779950cc4f3d6a336cc64e45fdb2a66c85945d424bd8c41ee8f4fd49ec77
[INFO] running `Command { std: "docker" "start" "-a" "b69d779950cc4f3d6a336cc64e45fdb2a66c85945d424bd8c41ee8f4fd49ec77", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.37
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.37
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.37
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.37
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.37
[INFO] [stderr]     Checking leven_wasm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.26s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.37
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "b69d779950cc4f3d6a336cc64e45fdb2a66c85945d424bd8c41ee8f4fd49ec77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b69d779950cc4f3d6a336cc64e45fdb2a66c85945d424bd8c41ee8f4fd49ec77", kill_on_drop: false }`
[INFO] [stdout] b69d779950cc4f3d6a336cc64e45fdb2a66c85945d424bd8c41ee8f4fd49ec77
[INFO] checking heyimalex/leven_wasm against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fheyimalex%2Fleven_wasm" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/heyimalex/leven_wasm on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/heyimalex/leven_wasm
[INFO] finished tweaking git repo https://github.com/heyimalex/leven_wasm
[INFO] tweaked toml for git repo https://github.com/heyimalex/leven_wasm written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/heyimalex/leven_wasm 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b941b33af67b3979fea5abae4b93170fc3bf9c7bd21645488a22ff01c781ee5
[INFO] running `Command { std: "docker" "start" "-a" "9b941b33af67b3979fea5abae4b93170fc3bf9c7bd21645488a22ff01c781ee5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b941b33af67b3979fea5abae4b93170fc3bf9c7bd21645488a22ff01c781ee5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b941b33af67b3979fea5abae4b93170fc3bf9c7bd21645488a22ff01c781ee5", kill_on_drop: false }`
[INFO] [stdout] 9b941b33af67b3979fea5abae4b93170fc3bf9c7bd21645488a22ff01c781ee5
[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=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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 161246449b02d70ac2dad6ec49417c3d6050b41e2c2c9d7e3d18b6bed225e378
[INFO] running `Command { std: "docker" "start" "-a" "161246449b02d70ac2dad6ec49417c3d6050b41e2c2c9d7e3d18b6bed225e378", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.37
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.37
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.37
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.37
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/wasm-bindgen-macro-support-0.2.37/src/parser.rs:228:17
[INFO] [stdout]     |
[INFO] [stdout] 228 | /                 if input.parse::<Token![=]>().is_ok() {
[INFO] [stdout] 229 | |                     let ident = input.parse::<AnyIdent>()?.0;
[INFO] [stdout] 230 | |                     return Ok(BindgenAttr::$variant(attr_span, Some(ident)))
[INFO] [stdout] 231 | |                 } else {
[INFO] [stdout] 232 | |                     return Ok(BindgenAttr::$variant(attr_span, None));
[INFO] [stdout] 233 | |                 }
[INFO] [stdout]     | |_________________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 257 |           attrgen!(parsers);
[INFO] [stdout]     |           ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `parsers` which comes from the expansion of the macro `attrgen` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wasm-bindgen-macro-support` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "161246449b02d70ac2dad6ec49417c3d6050b41e2c2c9d7e3d18b6bed225e378", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "161246449b02d70ac2dad6ec49417c3d6050b41e2c2c9d7e3d18b6bed225e378", kill_on_drop: false }`
[INFO] [stdout] 161246449b02d70ac2dad6ec49417c3d6050b41e2c2c9d7e3d18b6bed225e378