[INFO] cloning repository https://github.com/mdgeorge4153/rusted-roots
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdgeorge4153/rusted-roots" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdgeorge4153%2Frusted-roots", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdgeorge4153%2Frusted-roots'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 119163224d4a370f5430f35c6e16fa9338699ef2
[INFO] checking mdgeorge4153/rusted-roots against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdgeorge4153%2Frusted-roots" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdgeorge4153/rusted-roots 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/mdgeorge4153/rusted-roots
[INFO] finished tweaking git repo https://github.com/mdgeorge4153/rusted-roots
[INFO] tweaked toml for git repo https://github.com/mdgeorge4153/rusted-roots written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mdgeorge4153/rusted-roots 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]      Locking 1 package
[INFO] [stderr]       Adding rusted-roots v0.1.0 (/workspace/builds/worker-3-tc1/source)
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] a1ec18f50d6fe419b8b98cc4de73d2fc330260e96e8a5e5115ae21b028f55f56
[INFO] running `Command { std: "docker" "start" "-a" "a1ec18f50d6fe419b8b98cc4de73d2fc330260e96e8a5e5115ae21b028f55f56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1ec18f50d6fe419b8b98cc4de73d2fc330260e96e8a5e5115ae21b028f55f56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1ec18f50d6fe419b8b98cc4de73d2fc330260e96e8a5e5115ae21b028f55f56", kill_on_drop: false }`
[INFO] [stdout] a1ec18f50d6fe419b8b98cc4de73d2fc330260e96e8a5e5115ae21b028f55f56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 37092f969b48c784cb33f948b30254027487cb7ccccbd8d15d3fce7e087f24b1
[INFO] running `Command { std: "docker" "start" "-a" "37092f969b48c784cb33f948b30254027487cb7ccccbd8d15d3fce7e087f24b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling edit-distance v2.1.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling quickcheck v0.9.2
[INFO] [stderr]    Compiling alga_derive v0.9.2
[INFO] [stderr]     Checking rusted-roots v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.25s
[INFO] running `Command { std: "docker" "inspect" "37092f969b48c784cb33f948b30254027487cb7ccccbd8d15d3fce7e087f24b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37092f969b48c784cb33f948b30254027487cb7ccccbd8d15d3fce7e087f24b1", kill_on_drop: false }`
[INFO] [stdout] 37092f969b48c784cb33f948b30254027487cb7ccccbd8d15d3fce7e087f24b1
[INFO] checking mdgeorge4153/rusted-roots against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdgeorge4153%2Frusted-roots" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdgeorge4153/rusted-roots 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/mdgeorge4153/rusted-roots
[INFO] finished tweaking git repo https://github.com/mdgeorge4153/rusted-roots
[INFO] tweaked toml for git repo https://github.com/mdgeorge4153/rusted-roots written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mdgeorge4153/rusted-roots 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 5e06958c366c7dc6fdb5acde292164562636a79e7931ec03f5fe771037be8230
[INFO] running `Command { std: "docker" "start" "-a" "5e06958c366c7dc6fdb5acde292164562636a79e7931ec03f5fe771037be8230", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e06958c366c7dc6fdb5acde292164562636a79e7931ec03f5fe771037be8230", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e06958c366c7dc6fdb5acde292164562636a79e7931ec03f5fe771037be8230", kill_on_drop: false }`
[INFO] [stdout] 5e06958c366c7dc6fdb5acde292164562636a79e7931ec03f5fe771037be8230
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 510d505f857e08b25f1f73988183ea050581f24f50dbb0e7b85423dcfb2198d2
[INFO] running `Command { std: "docker" "start" "-a" "510d505f857e08b25f1f73988183ea050581f24f50dbb0e7b85423dcfb2198d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling edit-distance v2.1.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.4.5/src/exec.rs:851:13
[INFO] [stdout]     |
[INFO] [stdout] 851 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 852 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 853 | |                 self.cache.value(),
[INFO] [stdout] 854 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 865 | |                 Quit => return Some(Quit),
[INFO] [stdout] 866 | |             };
[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" "510d505f857e08b25f1f73988183ea050581f24f50dbb0e7b85423dcfb2198d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "510d505f857e08b25f1f73988183ea050581f24f50dbb0e7b85423dcfb2198d2", kill_on_drop: false }`
[INFO] [stdout] 510d505f857e08b25f1f73988183ea050581f24f50dbb0e7b85423dcfb2198d2