[INFO] fetching crate kv-log-macro 1.0.7...
[INFO] checking kv-log-macro-1.0.7 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate kv-log-macro 1.0.7 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate kv-log-macro 1.0.7 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 kv-log-macro 1.0.7
[INFO] finished tweaking crates.io crate kv-log-macro 1.0.7
[INFO] tweaked toml for crates.io crate kv-log-macro 1.0.7 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate kv-log-macro 1.0.7 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 wasm-bindgen-shared v0.2.62
[INFO] [stderr]   Downloaded async-log v1.1.0
[INFO] [stderr]   Downloaded quote v1.0.4
[INFO] [stderr]   Downloaded async-log-attributes v1.0.1
[INFO] [stderr]   Downloaded ryu v1.0.4
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.62
[INFO] [stderr]   Downloaded js-sys v0.3.39
[INFO] [stderr]   Downloaded syn v1.0.19
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.62
[INFO] [stderr]   Downloaded web-sys v0.3.39
[INFO] [stderr]   Downloaded backtrace-sys v0.1.37
[INFO] [stderr]   Downloaded femme v1.3.0
[INFO] [stderr]   Downloaded serde_json v1.0.52
[INFO] [stderr]   Downloaded proc-macro2 v1.0.12
[INFO] [stderr]   Downloaded smallvec v1.4.0
[INFO] [stderr]   Downloaded parking_lot_core v0.7.2
[INFO] [stderr]   Downloaded termios v0.3.2
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.62
[INFO] [stderr]   Downloaded console v0.7.7
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.62
[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] e8500fd42041d67fcdeac7e983f30dce15adfd54cad1f4ff7895fe3b30365010
[INFO] running `Command { std: "docker" "start" "-a" "e8500fd42041d67fcdeac7e983f30dce15adfd54cad1f4ff7895fe3b30365010", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8500fd42041d67fcdeac7e983f30dce15adfd54cad1f4ff7895fe3b30365010", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8500fd42041d67fcdeac7e983f30dce15adfd54cad1f4ff7895fe3b30365010", kill_on_drop: false }`
[INFO] [stdout] e8500fd42041d67fcdeac7e983f30dce15adfd54cad1f4ff7895fe3b30365010
[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] 28eb2cacfb39371c74e4d2d453751065c8fd54de3610d4f0221cf0b2e4932e30
[INFO] running `Command { std: "docker" "start" "-a" "28eb2cacfb39371c74e4d2d453751065c8fd54de3610d4f0221cf0b2e4932e30", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking kv-log-macro v1.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking console v0.7.7
[INFO] [stderr]     Checking serde_json v1.0.52
[INFO] [stderr]    Compiling async-log-attributes v1.0.1
[INFO] [stderr]     Checking async-log v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking femme v1.3.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.81s
[INFO] running `Command { std: "docker" "inspect" "28eb2cacfb39371c74e4d2d453751065c8fd54de3610d4f0221cf0b2e4932e30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28eb2cacfb39371c74e4d2d453751065c8fd54de3610d4f0221cf0b2e4932e30", kill_on_drop: false }`
[INFO] [stdout] 28eb2cacfb39371c74e4d2d453751065c8fd54de3610d4f0221cf0b2e4932e30
[INFO] checking kv-log-macro-1.0.7 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate kv-log-macro 1.0.7 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate kv-log-macro 1.0.7 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 kv-log-macro 1.0.7
[INFO] finished tweaking crates.io crate kv-log-macro 1.0.7
[INFO] tweaked toml for crates.io crate kv-log-macro 1.0.7 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate kv-log-macro 1.0.7 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] [stderr]     Blocking waiting for file lock on package cache
[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] 4b9f206919298d7c949e86c86b3db41278a3fe0e560f55caca003b0d7c3790a7
[INFO] running `Command { std: "docker" "start" "-a" "4b9f206919298d7c949e86c86b3db41278a3fe0e560f55caca003b0d7c3790a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b9f206919298d7c949e86c86b3db41278a3fe0e560f55caca003b0d7c3790a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b9f206919298d7c949e86c86b3db41278a3fe0e560f55caca003b0d7c3790a7", kill_on_drop: false }`
[INFO] [stdout] 4b9f206919298d7c949e86c86b3db41278a3fe0e560f55caca003b0d7c3790a7
[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] 837a1b053f9b195f93c5d2fbce495f714e3a6871c92fa4ed44bbb26ab21cc659
[INFO] running `Command { std: "docker" "start" "-a" "837a1b053f9b195f93c5d2fbce495f714e3a6871c92fa4ed44bbb26ab21cc659", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking kv-log-macro v1.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.3.7/src/exec.rs:836:13
[INFO] [stdout]     |
[INFO] [stdout] 836 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 837 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 838 | |                 self.cache.value(),
[INFO] [stdout] 839 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 850 | |                 Quit => return Some(Quit),
[INFO] [stdout] 851 | |             };
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "837a1b053f9b195f93c5d2fbce495f714e3a6871c92fa4ed44bbb26ab21cc659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "837a1b053f9b195f93c5d2fbce495f714e3a6871c92fa4ed44bbb26ab21cc659", kill_on_drop: false }`
[INFO] [stdout] 837a1b053f9b195f93c5d2fbce495f714e3a6871c92fa4ed44bbb26ab21cc659