[INFO] cloning repository https://github.com/Alonso-JAMM/NozzleFlow
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Alonso-JAMM/NozzleFlow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlonso-JAMM%2FNozzleFlow", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlonso-JAMM%2FNozzleFlow'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8347486827202dd6432c58b605722672133359f
[INFO] checking Alonso-JAMM/NozzleFlow against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlonso-JAMM%2FNozzleFlow" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Alonso-JAMM/NozzleFlow 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/Alonso-JAMM/NozzleFlow
[INFO] finished tweaking git repo https://github.com/Alonso-JAMM/NozzleFlow
[INFO] tweaked toml for git repo https://github.com/Alonso-JAMM/NozzleFlow written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Alonso-JAMM/NozzleFlow 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 hdf5-derive v0.8.1
[INFO] [stderr]   Downloaded hdf5-types v0.8.1
[INFO] [stderr]   Downloaded hdf5 v0.8.1
[INFO] [stderr]   Downloaded hdf5-sys v0.8.1
[INFO] [stderr]   Downloaded libc v0.2.123
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 4b03f1b59cc58ea89c6a0e7a6b57a4e628b1b31e5a9288cd020742d6d66e5765
[INFO] running `Command { std: "docker" "start" "-a" "4b03f1b59cc58ea89c6a0e7a6b57a4e628b1b31e5a9288cd020742d6d66e5765", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b03f1b59cc58ea89c6a0e7a6b57a4e628b1b31e5a9288cd020742d6d66e5765", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b03f1b59cc58ea89c6a0e7a6b57a4e628b1b31e5a9288cd020742d6d66e5765", kill_on_drop: false }`
[INFO] [stdout] 4b03f1b59cc58ea89c6a0e7a6b57a4e628b1b31e5a9288cd020742d6d66e5765
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d3bb92af064e8c079859d86e5cf40964746eefa8331161f7a7a157d91c324ec9
[INFO] running `Command { std: "docker" "start" "-a" "d3bb92af064e8c079859d86e5cf40964746eefa8331161f7a7a157d91c324ec9", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling hdf5-types v0.8.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]    Compiling hdf5 v0.8.1
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling hdf5-sys v0.8.1
[INFO] [stderr]    Compiling hdf5-derive v0.8.1
[INFO] [stderr]     Checking nozzle_flow v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined 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 4.51s
[INFO] running `Command { std: "docker" "inspect" "d3bb92af064e8c079859d86e5cf40964746eefa8331161f7a7a157d91c324ec9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3bb92af064e8c079859d86e5cf40964746eefa8331161f7a7a157d91c324ec9", kill_on_drop: false }`
[INFO] [stdout] d3bb92af064e8c079859d86e5cf40964746eefa8331161f7a7a157d91c324ec9
[INFO] checking Alonso-JAMM/NozzleFlow against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlonso-JAMM%2FNozzleFlow" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Alonso-JAMM/NozzleFlow 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/Alonso-JAMM/NozzleFlow
[INFO] finished tweaking git repo https://github.com/Alonso-JAMM/NozzleFlow
[INFO] tweaked toml for git repo https://github.com/Alonso-JAMM/NozzleFlow written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Alonso-JAMM/NozzleFlow 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2a88a2fabcd21c005720d561f144751e52cedac4008b05f98c017a854e7d5a0c
[INFO] running `Command { std: "docker" "start" "-a" "2a88a2fabcd21c005720d561f144751e52cedac4008b05f98c017a854e7d5a0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a88a2fabcd21c005720d561f144751e52cedac4008b05f98c017a854e7d5a0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a88a2fabcd21c005720d561f144751e52cedac4008b05f98c017a854e7d5a0c", kill_on_drop: false }`
[INFO] [stdout] 2a88a2fabcd21c005720d561f144751e52cedac4008b05f98c017a854e7d5a0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] e86a8269aa46be89ed65299de6a51c18b39ab0ee22d3c745ab43bbddedb1b2b7
[INFO] running `Command { std: "docker" "start" "-a" "e86a8269aa46be89ed65299de6a51c18b39ab0ee22d3c745ab43bbddedb1b2b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling hdf5-types v0.8.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]    Compiling hdf5 v0.8.1
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.5.5/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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e86a8269aa46be89ed65299de6a51c18b39ab0ee22d3c745ab43bbddedb1b2b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e86a8269aa46be89ed65299de6a51c18b39ab0ee22d3c745ab43bbddedb1b2b7", kill_on_drop: false }`
[INFO] [stdout] e86a8269aa46be89ed65299de6a51c18b39ab0ee22d3c745ab43bbddedb1b2b7