[INFO] cloning repository https://github.com/teddywing/mutt-ottolangy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/teddywing/mutt-ottolangy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteddywing%2Fmutt-ottolangy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteddywing%2Fmutt-ottolangy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fec693e7395b4cb733f8aa3f84df264eeddf5ad2
[INFO] checking teddywing/mutt-ottolangy against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteddywing%2Fmutt-ottolangy" "/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/teddywing/mutt-ottolangy 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/teddywing/mutt-ottolangy
[INFO] finished tweaking git repo https://github.com/teddywing/mutt-ottolangy
[INFO] tweaked toml for git repo https://github.com/teddywing/mutt-ottolangy written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/teddywing/mutt-ottolangy 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 quoted_printable v0.4.2
[INFO] [stderr]   Downloaded ahash v0.3.8
[INFO] [stderr]   Downloaded byteorder v1.4.2
[INFO] [stderr]   Downloaded mailparse v0.13.2
[INFO] [stderr]   Downloaded thiserror-impl v1.0.24
[INFO] [stderr]   Downloaded thiserror v1.0.24
[INFO] [stderr]   Downloaded aho-corasick v0.7.15
[INFO] [stderr]   Downloaded regex v1.4.4
[INFO] [stderr]   Downloaded syn v1.0.63
[INFO] [stderr]   Downloaded whatlang v0.11.1
[INFO] [stderr]   Downloaded hashbrown v0.7.2
[INFO] [stderr]   Downloaded regex-syntax v0.6.23
[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] 5f0e3f7cc499694a43623ba13543bfb65c1fe0aa5ec16e526ef272fdab7ac17c
[INFO] running `Command { std: "docker" "start" "-a" "5f0e3f7cc499694a43623ba13543bfb65c1fe0aa5ec16e526ef272fdab7ac17c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f0e3f7cc499694a43623ba13543bfb65c1fe0aa5ec16e526ef272fdab7ac17c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f0e3f7cc499694a43623ba13543bfb65c1fe0aa5ec16e526ef272fdab7ac17c", kill_on_drop: false }`
[INFO] [stdout] 5f0e3f7cc499694a43623ba13543bfb65c1fe0aa5ec16e526ef272fdab7ac17c
[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] 2099f632c7818c5e3572c8cedc446c82f3e414586ee6c17f5e68bc6536c004c2
[INFO] running `Command { std: "docker" "start" "-a" "2099f632c7818c5e3572c8cedc446c82f3e414586ee6c17f5e68bc6536c004c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking quoted_printable v0.4.2
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking exitcode v1.1.2
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking whatlang v0.11.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking charset v0.1.2
[INFO] [stderr]     Checking mailparse v0.13.2
[INFO] [stderr]     Checking regex v1.4.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking ottolangy v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `exitcode` is imported redundantly
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use exitcode;
[INFO] [stdout]    |     ^^^^^^^^ the item `exitcode` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mailparse` is imported redundantly
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use mailparse;
[INFO] [stdout]    |     ^^^^^^^^^ the item `mailparse` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `whatlang` is imported redundantly
[INFO] [stdout]   --> src/main.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 | use whatlang::{self, Lang};
[INFO] [stdout]    |                ^^^^ the item `whatlang` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `xdg` is imported redundantly
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use xdg;
[INFO] [stdout]    |     ^^^ the item `xdg` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `exitcode` is imported redundantly
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use exitcode;
[INFO] [stdout]    |     ^^^^^^^^ the item `exitcode` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mailparse` is imported redundantly
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use mailparse;
[INFO] [stdout]    |     ^^^^^^^^^ the item `mailparse` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `whatlang` is imported redundantly
[INFO] [stdout]   --> src/main.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 | use whatlang::{self, Lang};
[INFO] [stdout]    |                ^^^^ the item `whatlang` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `xdg` is imported redundantly
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use xdg;
[INFO] [stdout]    |     ^^^ the item `xdg` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.14s
[INFO] running `Command { std: "docker" "inspect" "2099f632c7818c5e3572c8cedc446c82f3e414586ee6c17f5e68bc6536c004c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2099f632c7818c5e3572c8cedc446c82f3e414586ee6c17f5e68bc6536c004c2", kill_on_drop: false }`
[INFO] [stdout] 2099f632c7818c5e3572c8cedc446c82f3e414586ee6c17f5e68bc6536c004c2
[INFO] checking teddywing/mutt-ottolangy against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteddywing%2Fmutt-ottolangy" "/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/teddywing/mutt-ottolangy 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/teddywing/mutt-ottolangy
[INFO] finished tweaking git repo https://github.com/teddywing/mutt-ottolangy
[INFO] tweaked toml for git repo https://github.com/teddywing/mutt-ottolangy written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/teddywing/mutt-ottolangy 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] 8586be8ffee6db3d33b51e97933cba24f86e722cd484755bd4d9b8139707fa16
[INFO] running `Command { std: "docker" "start" "-a" "8586be8ffee6db3d33b51e97933cba24f86e722cd484755bd4d9b8139707fa16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8586be8ffee6db3d33b51e97933cba24f86e722cd484755bd4d9b8139707fa16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8586be8ffee6db3d33b51e97933cba24f86e722cd484755bd4d9b8139707fa16", kill_on_drop: false }`
[INFO] [stdout] 8586be8ffee6db3d33b51e97933cba24f86e722cd484755bd4d9b8139707fa16
[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] 1ac48f6b140dd851d1f7f4640103b35b421782a6db282e378efb2d585c7c9482
[INFO] running `Command { std: "docker" "start" "-a" "1ac48f6b140dd851d1f7f4640103b35b421782a6db282e378efb2d585c7c9482", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking quoted_printable v0.4.2
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking exitcode v1.1.2
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking whatlang v0.11.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking charset v0.1.2
[INFO] [stderr]     Checking mailparse v0.13.2
[INFO] [stderr]     Checking regex v1.4.4
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mailparse-0.13.2/src/header.rs:85:9
[INFO] [stdout]     |
[INFO] [stdout] 85  | /         match find_from(line, ix_search, "=?") {
[INFO] [stdout] 86  | |             Some(v) => {
[INFO] [stdout] 87  | |                 let ix_begin = v + 2;
[INFO] [stdout] 88  | |                 if !is_boundary(line, ix_begin.checked_sub(3)) {
[INFO] [stdout] ...   |
[INFO] [stdout] 123 | |             }
[INFO] [stdout] 124 | |         };
[INFO] [stdout]     | |_________^ cannot infer type
[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 `mailparse` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.4.4/src/exec.rs:844:13
[INFO] [stdout]     |
[INFO] [stdout] 844 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 845 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 846 | |                 self.cache.value(),
[INFO] [stdout] 847 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 858 | |                 Quit => return Some(Quit),
[INFO] [stdout] 859 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[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 `regex` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1ac48f6b140dd851d1f7f4640103b35b421782a6db282e378efb2d585c7c9482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ac48f6b140dd851d1f7f4640103b35b421782a6db282e378efb2d585c7c9482", kill_on_drop: false }`
[INFO] [stdout] 1ac48f6b140dd851d1f7f4640103b35b421782a6db282e378efb2d585c7c9482