[INFO] fetching crate cbfmt 0.2.0...
[INFO] checking cbfmt-0.2.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate cbfmt 0.2.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate cbfmt 0.2.0 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 cbfmt 0.2.0
[INFO] finished tweaking crates.io crate cbfmt 0.2.0
[INFO] tweaked toml for crates.io crate cbfmt 0.2.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate cbfmt 0.2.0 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 tree-sitter v0.20.8
[INFO] [stderr]   Downloaded tree-sitter-org v1.3.0
[INFO] [stderr]   Downloaded futures-executor v0.3.23
[INFO] [stderr]   Downloaded futures-macro v0.3.23
[INFO] [stderr]   Downloaded globset v0.4.9
[INFO] [stderr]   Downloaded futures v0.3.23
[INFO] [stderr]   Downloaded unicode-linebreak v0.1.2
[INFO] [stderr]   Downloaded serde_derive v1.0.143
[INFO] [stderr]   Downloaded tree-sitter-md v0.1.1
[INFO] [stderr]   Downloaded serde v1.0.143
[INFO] [stderr]   Downloaded libc v0.2.131
[INFO] [stderr]   Downloaded tree-sitter-rst v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 0e48f4c4a6d1a80b9144ada229ad185d278a3a36406f1ab6045af7c91eae4805
[INFO] running `Command { std: "docker" "start" "-a" "0e48f4c4a6d1a80b9144ada229ad185d278a3a36406f1ab6045af7c91eae4805", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e48f4c4a6d1a80b9144ada229ad185d278a3a36406f1ab6045af7c91eae4805", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e48f4c4a6d1a80b9144ada229ad185d278a3a36406f1ab6045af7c91eae4805", kill_on_drop: false }`
[INFO] [stdout] 0e48f4c4a6d1a80b9144ada229ad185d278a3a36406f1ab6045af7c91eae4805
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c4893fe58e41733a9b4f9276dd5f02024ded716b29552de0c6c2c53d3aa676db
[INFO] running `Command { std: "docker" "start" "-a" "c4893fe58e41733a9b4f9276dd5f02024ded716b29552de0c6c2c53d3aa676db", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.131
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling futures-core v0.3.23
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling futures-task v0.3.23
[INFO] [stderr]    Compiling futures-channel v0.3.23
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking futures-sink v0.3.23
[INFO] [stderr]    Compiling futures-util v0.3.23
[INFO] [stderr]    Compiling serde_derive v1.0.143
[INFO] [stderr]    Compiling tree-sitter v0.20.8
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling serde v1.0.143
[INFO] [stderr]     Checking futures-io v0.3.23
[INFO] [stderr]    Compiling tree-sitter-md v0.1.1
[INFO] [stderr]    Compiling tree-sitter-rst v0.1.0
[INFO] [stderr]    Compiling tree-sitter-org v1.3.0
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]    Compiling tokio v1.20.1
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking globset v0.4.9
[INFO] [stderr]     Checking crossbeam-utils v0.8.11
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking ignore v0.4.18
[INFO] [stderr]    Compiling unicode-linebreak v0.1.2
[INFO] [stderr]    Compiling futures-macro v0.3.23
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.32
[INFO] [stderr]     Checking thiserror v1.0.32
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking clap v3.2.17
[INFO] [stderr]     Checking futures-executor v0.3.23
[INFO] [stderr]     Checking futures v0.3.23
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking cbfmt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]  --> src/format.rs:7:51
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{self, prelude::*, Error, ErrorKind, Write};
[INFO] [stdout]   |                     ----------                    ^^^^^
[INFO] [stdout]   |                     |
[INFO] [stdout]   |                     the item `Write` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]  --> src/format.rs:7:51
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{self, prelude::*, Error, ErrorKind, Write};
[INFO] [stdout]   |                     ----------                    ^^^^^
[INFO] [stdout]   |                     |
[INFO] [stdout]   |                     the item `Write` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.64s
[INFO] running `Command { std: "docker" "inspect" "c4893fe58e41733a9b4f9276dd5f02024ded716b29552de0c6c2c53d3aa676db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4893fe58e41733a9b4f9276dd5f02024ded716b29552de0c6c2c53d3aa676db", kill_on_drop: false }`
[INFO] [stdout] c4893fe58e41733a9b4f9276dd5f02024ded716b29552de0c6c2c53d3aa676db
[INFO] checking cbfmt-0.2.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate cbfmt 0.2.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate cbfmt 0.2.0 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 crates.io crate cbfmt 0.2.0
[INFO] finished tweaking crates.io crate cbfmt 0.2.0
[INFO] tweaked toml for crates.io crate cbfmt 0.2.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate cbfmt 0.2.0 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] bc39d9c34ed13d090c41feee696f30f271c792ec06aa3d08ef3f8e5e56a5f5a7
[INFO] running `Command { std: "docker" "start" "-a" "bc39d9c34ed13d090c41feee696f30f271c792ec06aa3d08ef3f8e5e56a5f5a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc39d9c34ed13d090c41feee696f30f271c792ec06aa3d08ef3f8e5e56a5f5a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc39d9c34ed13d090c41feee696f30f271c792ec06aa3d08ef3f8e5e56a5f5a7", kill_on_drop: false }`
[INFO] [stdout] bc39d9c34ed13d090c41feee696f30f271c792ec06aa3d08ef3f8e5e56a5f5a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 514eea0531052a49b0b432adaac9835f8e19e0ef000b517ba0c29fc73bbb68f5
[INFO] running `Command { std: "docker" "start" "-a" "514eea0531052a49b0b432adaac9835f8e19e0ef000b517ba0c29fc73bbb68f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling futures-core v0.3.23
[INFO] [stderr]    Compiling libc v0.2.131
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling futures-channel v0.3.23
[INFO] [stderr]    Compiling futures-task v0.3.23
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]     Checking futures-sink v0.3.23
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling futures-util v0.3.23
[INFO] [stderr]    Compiling tree-sitter v0.20.8
[INFO] [stderr]    Compiling serde_derive v1.0.143
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling serde v1.0.143
[INFO] [stderr]     Checking futures-io v0.3.23
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]    Compiling tree-sitter-rst v0.1.0
[INFO] [stderr]    Compiling tree-sitter-md v0.1.1
[INFO] [stderr]    Compiling tree-sitter-org v1.3.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]    Compiling tokio v1.20.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.6.0/src/exec.rs:848:13
[INFO] [stdout]     |
[INFO] [stdout] 848 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 849 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 850 | |                 self.cache.value(),
[INFO] [stdout] 851 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 862 | |                 Quit => return Some(Quit),
[INFO] [stdout] 863 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.6.0/src/exec.rs:848:13
[INFO] [stdout]     |
[INFO] [stdout] 848 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 849 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 850 | |                 self.cache.value(),
[INFO] [stdout] 851 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 862 | |                 Quit => return Some(Quit),
[INFO] [stdout] 863 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking walkdir v2.3.2
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[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" "514eea0531052a49b0b432adaac9835f8e19e0ef000b517ba0c29fc73bbb68f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "514eea0531052a49b0b432adaac9835f8e19e0ef000b517ba0c29fc73bbb68f5", kill_on_drop: false }`
[INFO] [stdout] 514eea0531052a49b0b432adaac9835f8e19e0ef000b517ba0c29fc73bbb68f5