[INFO] cloning repository https://github.com/FenderLang/fender_example_plugin
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FenderLang/fender_example_plugin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFenderLang%2Ffender_example_plugin", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFenderLang%2Ffender_example_plugin'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6c7279cfd941f43914ab44b022d3da2c55ae6b20
[INFO] checking FenderLang/fender_example_plugin against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFenderLang%2Ffender_example_plugin" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FenderLang/fender_example_plugin 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/FenderLang/fender_example_plugin
[INFO] finished tweaking git repo https://github.com/FenderLang/fender_example_plugin
[INFO] tweaked toml for git repo https://github.com/FenderLang/fender_example_plugin written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/FenderLang/fender_example_plugin 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]     Updating git repository `https://github.com/FenderLang/Fender`
[INFO] [stderr]     Updating git repository `https://github.com/FenderLang/Flux`
[INFO] [stderr]     Updating git repository `https://github.com/FenderLang/Freight`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ea008bd3f526672725dadf0ac54a5031368c90a8c82dc5c36486a4790dde9ea
[INFO] running `Command { std: "docker" "start" "-a" "0ea008bd3f526672725dadf0ac54a5031368c90a8c82dc5c36486a4790dde9ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ea008bd3f526672725dadf0ac54a5031368c90a8c82dc5c36486a4790dde9ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ea008bd3f526672725dadf0ac54a5031368c90a8c82dc5c36486a4790dde9ea", kill_on_drop: false }`
[INFO] [stdout] 0ea008bd3f526672725dadf0ac54a5031368c90a8c82dc5c36486a4790dde9ea
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9e933e14ee09dd6d0a0487c29fb45ebfc41b0daf7bfb9903f8a6e4186f7e1b9
[INFO] running `Command { std: "docker" "start" "-a" "d9e933e14ee09dd6d0a0487c29fb45ebfc41b0daf7bfb9903f8a6e4186f7e1b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]     Checking bumpalo v3.12.1
[INFO] [stderr]     Checking freight_vm v0.1.0 (https://github.com/FenderLang/Freight?rev=a06053e83b736f08621a7eb66840577edaefc021#a06053e8)
[INFO] [stderr]     Checking libloading v0.8.0
[INFO] [stderr]     Checking flux_bnf v0.1.0 (https://github.com/FenderLang/Flux?rev=0b7b25e36313e76f0aa43d5f61b2f07a99322a72#0b7b25e3)
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking fender v0.1.0 (https://github.com/FenderLang/Fender?rev=c268abae87f48c229de23b991d594e33e6d98b85#c268abae)
[INFO] [stderr]     Checking example_plugin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "d9e933e14ee09dd6d0a0487c29fb45ebfc41b0daf7bfb9903f8a6e4186f7e1b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9e933e14ee09dd6d0a0487c29fb45ebfc41b0daf7bfb9903f8a6e4186f7e1b9", kill_on_drop: false }`
[INFO] [stdout] d9e933e14ee09dd6d0a0487c29fb45ebfc41b0daf7bfb9903f8a6e4186f7e1b9
[INFO] checking FenderLang/fender_example_plugin against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFenderLang%2Ffender_example_plugin" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FenderLang/fender_example_plugin 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/FenderLang/fender_example_plugin
[INFO] finished tweaking git repo https://github.com/FenderLang/fender_example_plugin
[INFO] tweaked toml for git repo https://github.com/FenderLang/fender_example_plugin written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/FenderLang/fender_example_plugin 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2c71e6d679eec16f3a08b6ea9b9d9c72d5e31e8c8ed431d221769c08a2ef8bef
[INFO] running `Command { std: "docker" "start" "-a" "2c71e6d679eec16f3a08b6ea9b9d9c72d5e31e8c8ed431d221769c08a2ef8bef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c71e6d679eec16f3a08b6ea9b9d9c72d5e31e8c8ed431d221769c08a2ef8bef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c71e6d679eec16f3a08b6ea9b9d9c72d5e31e8c8ed431d221769c08a2ef8bef", kill_on_drop: false }`
[INFO] [stdout] 2c71e6d679eec16f3a08b6ea9b9d9c72d5e31e8c8ed431d221769c08a2ef8bef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] cc609808f26c13f656e9f6b6887f7f72e1af8b6461bd56a4cc40a8a2a7775282
[INFO] running `Command { std: "docker" "start" "-a" "cc609808f26c13f656e9f6b6887f7f72e1af8b6461bd56a4cc40a8a2a7775282", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]     Checking bumpalo v3.12.1
[INFO] [stderr]     Checking freight_vm v0.1.0 (https://github.com/FenderLang/Freight?rev=a06053e83b736f08621a7eb66840577edaefc021#a06053e8)
[INFO] [stderr]     Checking libloading v0.8.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bumpalo-3.12.1/src/collections/str/lossy.rs:82:28
[INFO] [stdout]    |
[INFO] [stdout] 82 |                       () => {{
[INFO] [stdout]    |  ____________________________^
[INFO] [stdout] 83 | |                         unsafe {
[INFO] [stdout] 84 | |                             let r = Utf8LossyChunk {
[INFO] [stdout] 85 | |                                 valid: str::from_utf8_unchecked(&self.source[0..i_]),
[INFO] [stdout] ...  |
[INFO] [stdout] 90 | |                         }
[INFO] [stdout] 91 | |                     }};
[INFO] [stdout]    | |_____________________^ cannot infer type
[INFO] [stdout] ...
[INFO] [stdout] 97 |                               error!();
[INFO] [stdout]    |                               -------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `error` (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 E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bumpalo` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "cc609808f26c13f656e9f6b6887f7f72e1af8b6461bd56a4cc40a8a2a7775282", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc609808f26c13f656e9f6b6887f7f72e1af8b6461bd56a4cc40a8a2a7775282", kill_on_drop: false }`
[INFO] [stdout] cc609808f26c13f656e9f6b6887f7f72e1af8b6461bd56a4cc40a8a2a7775282