[INFO] fetching crate ripline 0.1.0...
[INFO] checking ripline-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate ripline 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate ripline 0.1.0 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 ripline 0.1.0
[INFO] finished tweaking crates.io crate ripline 0.1.0
[INFO] tweaked toml for crates.io crate ripline 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate ripline 0.1.0 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 grep-cli v0.1.6
[INFO] [stderr]   Downloaded linereader v0.4.0
[INFO] [stderr]   Downloaded memmap2 v0.3.0
[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] 4491ab955d2f3a3b935cb6348f739245679a56fc3afbc452ed714c073f745038
[INFO] running `Command { std: "docker" "start" "-a" "4491ab955d2f3a3b935cb6348f739245679a56fc3afbc452ed714c073f745038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4491ab955d2f3a3b935cb6348f739245679a56fc3afbc452ed714c073f745038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4491ab955d2f3a3b935cb6348f739245679a56fc3afbc452ed714c073f745038", kill_on_drop: false }`
[INFO] [stdout] 4491ab955d2f3a3b935cb6348f739245679a56fc3afbc452ed714c073f745038
[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] 69def8225da8e310b874742041f4ebdc372025c4ca5a27fc164ee7ddcf077258
[INFO] running `Command { std: "docker" "start" "-a" "69def8225da8e310b874742041f4ebdc372025c4ca5a27fc164ee7ddcf077258", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking bytecount v0.6.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking linereader v0.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking memmap2 v0.3.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking ripline v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `bytecount` is imported redundantly
[INFO] [stdout]  --> src/lines.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use bytecount;
[INFO] [stdout]   |     ^^^^^^^^^ the item `bytecount` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking grep-cli v0.1.6
[INFO] [stdout] warning: the item `ByteSlice` is imported redundantly
[INFO] [stdout]    --> src/line_buffer.rs:410:16
[INFO] [stdout]     |
[INFO] [stdout] 409 |     use super::*;
[INFO] [stdout]     |         -------- the item `ByteSlice` is already imported here
[INFO] [stdout] 410 |     use bstr::{ByteSlice, ByteVec};
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `bytecount` is imported redundantly
[INFO] [stdout]  --> src/lines.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use bytecount;
[INFO] [stdout]   |     ^^^^^^^^^ the item `bytecount` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `Command { std: "docker" "inspect" "69def8225da8e310b874742041f4ebdc372025c4ca5a27fc164ee7ddcf077258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69def8225da8e310b874742041f4ebdc372025c4ca5a27fc164ee7ddcf077258", kill_on_drop: false }`
[INFO] [stdout] 69def8225da8e310b874742041f4ebdc372025c4ca5a27fc164ee7ddcf077258
[INFO] checking ripline-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate ripline 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate ripline 0.1.0 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 ripline 0.1.0
[INFO] finished tweaking crates.io crate ripline 0.1.0
[INFO] tweaked toml for crates.io crate ripline 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate ripline 0.1.0 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-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] ec3ad7e5d2ff07adcff88666cf4013acc1bad87576773ab8b8c2833356b35c16
[INFO] running `Command { std: "docker" "start" "-a" "ec3ad7e5d2ff07adcff88666cf4013acc1bad87576773ab8b8c2833356b35c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec3ad7e5d2ff07adcff88666cf4013acc1bad87576773ab8b8c2833356b35c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec3ad7e5d2ff07adcff88666cf4013acc1bad87576773ab8b8c2833356b35c16", kill_on_drop: false }`
[INFO] [stdout] ec3ad7e5d2ff07adcff88666cf4013acc1bad87576773ab8b8c2833356b35c16
[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] cdeed351e430560aa385520443da8d4156c935b892b775291f2f553dee388884
[INFO] running `Command { std: "docker" "start" "-a" "cdeed351e430560aa385520443da8d4156c935b892b775291f2f553dee388884", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking bytecount v0.6.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking linereader v0.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking memmap2 v0.3.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking ripline v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `bytecount` is imported redundantly
[INFO] [stdout]  --> src/lines.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use bytecount;
[INFO] [stdout]   |     ^^^^^^^^^ the item `bytecount` is already defined by prelude
[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] [stderr]     Checking regex v1.5.4
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.5.4/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] [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" "cdeed351e430560aa385520443da8d4156c935b892b775291f2f553dee388884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdeed351e430560aa385520443da8d4156c935b892b775291f2f553dee388884", kill_on_drop: false }`
[INFO] [stdout] cdeed351e430560aa385520443da8d4156c935b892b775291f2f553dee388884