[INFO] cloning repository https://github.com/shideneyu/mrml-ruby
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shideneyu/mrml-ruby" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshideneyu%2Fmrml-ruby", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshideneyu%2Fmrml-ruby'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d74fc397aa8d5fbb209235ba3ac1fcffb997ce6
[INFO] checking shideneyu/mrml-ruby against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshideneyu%2Fmrml-ruby" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shideneyu/mrml-ruby 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/shideneyu/mrml-ruby
[INFO] finished tweaking git repo https://github.com/shideneyu/mrml-ruby
[INFO] tweaked toml for git repo https://github.com/shideneyu/mrml-ruby written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/shideneyu/mrml-ruby 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 crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mrml v1.2.11
[INFO] [stderr]   Downloaded magnus-macros v0.4.1
[INFO] [stderr]   Downloaded rb-sys-build v0.9.86
[INFO] [stderr]   Downloaded rb-sys v0.9.86
[INFO] [stderr]   Downloaded rb-sys-env v0.1.2
[INFO] [stderr]   Downloaded magnus v0.5.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 257592505a27bec337cbb8ef62a876ff062d9327cbfc47ebcd4c03ece8f6ad01
[INFO] running `Command { std: "docker" "start" "-a" "257592505a27bec337cbb8ef62a876ff062d9327cbfc47ebcd4c03ece8f6ad01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "257592505a27bec337cbb8ef62a876ff062d9327cbfc47ebcd4c03ece8f6ad01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "257592505a27bec337cbb8ef62a876ff062d9327cbfc47ebcd4c03ece8f6ad01", kill_on_drop: false }`
[INFO] [stdout] 257592505a27bec337cbb8ef62a876ff062d9327cbfc47ebcd4c03ece8f6ad01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] d81a4d12baa4afbad015ebf7752b7cf9ef80005c17d3459b09ac347dd031b931
[INFO] running `Command { std: "docker" "start" "-a" "d81a4d12baa4afbad015ebf7752b7cf9ef80005c17d3459b09ac347dd031b931", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling bindgen v0.69.1
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling shlex v1.2.0
[INFO] [stderr]    Compiling shell-words v1.1.0
[INFO] [stderr]    Compiling libloading v0.8.1
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rb-sys-env v0.1.2
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking xmlparser v0.13.6
[INFO] [stderr]    Compiling magnus v0.5.5
[INFO] [stderr]    Compiling clang-sys v1.7.0
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking getrandom v0.2.12
[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]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling magnus-macros v0.4.1
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]    Compiling rb-sys-build v0.9.86
[INFO] [stderr]    Compiling rb-sys v0.9.86
[INFO] [stderr]     Checking mrml v1.2.11
[INFO] [stderr]     Checking mrml v0.1.0 (/opt/rustwide/workdir/ext/mrml)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.25s
[INFO] running `Command { std: "docker" "inspect" "d81a4d12baa4afbad015ebf7752b7cf9ef80005c17d3459b09ac347dd031b931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d81a4d12baa4afbad015ebf7752b7cf9ef80005c17d3459b09ac347dd031b931", kill_on_drop: false }`
[INFO] [stdout] d81a4d12baa4afbad015ebf7752b7cf9ef80005c17d3459b09ac347dd031b931
[INFO] checking shideneyu/mrml-ruby against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshideneyu%2Fmrml-ruby" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shideneyu/mrml-ruby 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/shideneyu/mrml-ruby
[INFO] finished tweaking git repo https://github.com/shideneyu/mrml-ruby
[INFO] tweaked toml for git repo https://github.com/shideneyu/mrml-ruby written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/shideneyu/mrml-ruby 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] cd388f445603c2dfcd642cec5fb958b02a4428661b6be3532d02e2e11d73f479
[INFO] running `Command { std: "docker" "start" "-a" "cd388f445603c2dfcd642cec5fb958b02a4428661b6be3532d02e2e11d73f479", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd388f445603c2dfcd642cec5fb958b02a4428661b6be3532d02e2e11d73f479", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd388f445603c2dfcd642cec5fb958b02a4428661b6be3532d02e2e11d73f479", kill_on_drop: false }`
[INFO] [stdout] cd388f445603c2dfcd642cec5fb958b02a4428661b6be3532d02e2e11d73f479
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c4b41280da95f44f1f96056ce2f8113b973e925e080b0b7c17ba9246cab4593f
[INFO] running `Command { std: "docker" "start" "-a" "c4b41280da95f44f1f96056ce2f8113b973e925e080b0b7c17ba9246cab4593f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling bindgen v0.69.1
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling shlex v1.2.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling shell-words v1.1.0
[INFO] [stderr]    Compiling libloading v0.8.1
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rb-sys-env v0.1.2
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking xmlparser v0.13.6
[INFO] [stderr]    Compiling magnus v0.5.5
[INFO] [stderr]    Compiling clang-sys v1.7.0
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking getrandom v0.2.12
[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]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling magnus-macros v0.4.1
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]    Compiling rb-sys-build v0.9.86
[INFO] [stderr]    Compiling rb-sys v0.9.86
[INFO] [stderr]     Checking mrml v1.2.11
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/magnus-0.5.5/src/error.rs:29:21
[INFO] [stdout]    |
[INFO] [stdout] 29 |                     unsafe { rb_iter_break_value(val.as_rb_value()) };
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/magnus-0.5.5/src/error.rs:314:13
[INFO] [stdout]     |
[INFO] [stdout] 314 |             unsafe { rb_exc_raise(err.exception().as_rb_value()) }
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot satisfy `_ -> _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0284.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `magnus` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "c4b41280da95f44f1f96056ce2f8113b973e925e080b0b7c17ba9246cab4593f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4b41280da95f44f1f96056ce2f8113b973e925e080b0b7c17ba9246cab4593f", kill_on_drop: false }`
[INFO] [stdout] c4b41280da95f44f1f96056ce2f8113b973e925e080b0b7c17ba9246cab4593f