[INFO] fetching crate dum 0.1.19...
[INFO] checking dum-0.1.19 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate dum 0.1.19 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate dum 0.1.19 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 dum 0.1.19
[INFO] finished tweaking crates.io crate dum 0.1.19
[INFO] tweaked toml for crates.io crate dum 0.1.19 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate dum 0.1.19 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 path-dedot v3.0.14
[INFO] [stderr]   Downloaded zeroize v1.4.3
[INFO] [stderr]   Downloaded env_logger v0.9.0
[INFO] [stderr]   Downloaded path-absolutize v3.0.11
[INFO] [stderr]   Downloaded ctrlc v3.2.1
[INFO] [stderr]   Downloaded dialoguer v0.9.0
[INFO] [stderr]   Downloaded cc v1.0.72
[INFO] [stderr]   Downloaded serde_json v1.0.71
[INFO] [stderr]   Downloaded nix v0.23.0
[INFO] [stderr]   Downloaded libc v0.2.107
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ed6e14bafb1fd104c50ab7863f4da1f9e26753e0656e7bb1650821c0d8ae7eec
[INFO] running `Command { std: "docker" "start" "-a" "ed6e14bafb1fd104c50ab7863f4da1f9e26753e0656e7bb1650821c0d8ae7eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed6e14bafb1fd104c50ab7863f4da1f9e26753e0656e7bb1650821c0d8ae7eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed6e14bafb1fd104c50ab7863f4da1f9e26753e0656e7bb1650821c0d8ae7eec", kill_on_drop: false }`
[INFO] [stdout] ed6e14bafb1fd104c50ab7863f4da1f9e26753e0656e7bb1650821c0d8ae7eec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ccbebca57de862580d96880936742f65cb8d9f3f75660cc80d40b4afb0ffc7e1
[INFO] running `Command { std: "docker" "start" "-a" "ccbebca57de862580d96880936742f65cb8d9f3f75660cc80d40b4afb0ffc7e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde_json v1.0.71
[INFO] [stderr]     Checking zeroize v1.4.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking path-dedot v3.0.14
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking path-absolutize v3.0.11
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.23.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking dialoguer v0.9.0
[INFO] [stderr]     Checking ctrlc v3.2.1
[INFO] [stderr]     Checking dum v0.1.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Absolutize` is imported redundantly
[INFO] [stdout]    --> src/args.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     use super::*;
[INFO] [stdout]     |         -------- the item `Absolutize` is already imported here
[INFO] [stdout] 147 |     use path_absolutize::Absolutize;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.80s
[INFO] running `Command { std: "docker" "inspect" "ccbebca57de862580d96880936742f65cb8d9f3f75660cc80d40b4afb0ffc7e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccbebca57de862580d96880936742f65cb8d9f3f75660cc80d40b4afb0ffc7e1", kill_on_drop: false }`
[INFO] [stdout] ccbebca57de862580d96880936742f65cb8d9f3f75660cc80d40b4afb0ffc7e1
[INFO] checking dum-0.1.19 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate dum 0.1.19 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate dum 0.1.19 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 dum 0.1.19
[INFO] finished tweaking crates.io crate dum 0.1.19
[INFO] tweaked toml for crates.io crate dum 0.1.19 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate dum 0.1.19 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3ee61eb06be52271952768b3bd8071a886613c475e5002f7aa08b6cfdcc55b23
[INFO] running `Command { std: "docker" "start" "-a" "3ee61eb06be52271952768b3bd8071a886613c475e5002f7aa08b6cfdcc55b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ee61eb06be52271952768b3bd8071a886613c475e5002f7aa08b6cfdcc55b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ee61eb06be52271952768b3bd8071a886613c475e5002f7aa08b6cfdcc55b23", kill_on_drop: false }`
[INFO] [stdout] 3ee61eb06be52271952768b3bd8071a886613c475e5002f7aa08b6cfdcc55b23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f86f849efeb171c200a66bc51d1c6bd9230466f711ed103454e701e03b2ca494
[INFO] running `Command { std: "docker" "start" "-a" "f86f849efeb171c200a66bc51d1c6bd9230466f711ed103454e701e03b2ca494", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.71
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking zeroize v1.4.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking path-dedot v3.0.14
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking path-absolutize v3.0.11
[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] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.23.0
[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" "f86f849efeb171c200a66bc51d1c6bd9230466f711ed103454e701e03b2ca494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f86f849efeb171c200a66bc51d1c6bd9230466f711ed103454e701e03b2ca494", kill_on_drop: false }`
[INFO] [stdout] f86f849efeb171c200a66bc51d1c6bd9230466f711ed103454e701e03b2ca494