[INFO] fetching crate nu_plugin_start 0.44.0...
[INFO] checking nu_plugin_start-0.44.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate nu_plugin_start 0.44.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate nu_plugin_start 0.44.0 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 nu_plugin_start 0.44.0
[INFO] finished tweaking crates.io crate nu_plugin_start 0.44.0
[INFO] tweaked toml for crates.io crate nu_plugin_start 0.44.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate nu_plugin_start 0.44.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded bigdecimal v0.3.0
[INFO] [stderr]   Downloaded nu-plugin v0.44.0
[INFO] [stderr]   Downloaded byte-unit v4.0.13
[INFO] [stderr]   Downloaded utf8-width v0.1.5
[INFO] [stderr]   Downloaded chrono-humanize v0.2.1
[INFO] [stderr]   Downloaded serde_bytes v0.11.5
[INFO] [stderr]   Downloaded open v1.7.1
[INFO] [stderr]   Downloaded getrandom v0.2.4
[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] d63be4947b8ecbd68998f414f779e2130621f208af2cf248273d803ab42c1199
[INFO] running `Command { std: "docker" "start" "-a" "d63be4947b8ecbd68998f414f779e2130621f208af2cf248273d803ab42c1199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d63be4947b8ecbd68998f414f779e2130621f208af2cf248273d803ab42c1199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d63be4947b8ecbd68998f414f779e2130621f208af2cf248273d803ab42c1199", kill_on_drop: false }`
[INFO] [stdout] d63be4947b8ecbd68998f414f779e2130621f208af2cf248273d803ab42c1199
[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] 3742d92f0459954431822e39a4c4d5bb295b9f1c6a9c5c8525aa4c53018649de
[INFO] running `Command { std: "docker" "start" "-a" "3742d92f0459954431822e39a4c4d5bb295b9f1c6a9c5c8525aa4c53018649de", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde_json v1.0.78
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking pretty v0.5.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking nu-ansi-term v0.44.0
[INFO] [stderr]     Checking utf8-width v0.1.5
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking byte-unit v4.0.13
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking dunce v1.0.2
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking webbrowser v0.5.5
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking num-complex v0.2.4
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking nu-path v0.44.0
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking hamcrest2 v0.3.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling getset v0.1.2
[INFO] [stderr]    Compiling derive-new v0.5.9
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]     Checking nu-source v0.44.0
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking serde_yaml v0.8.23
[INFO] [stderr]     Checking chrono-humanize v0.2.1
[INFO] [stderr]     Checking bigdecimal v0.3.0
[INFO] [stderr]     Checking nu-errors v0.44.0
[INFO] [stderr]     Checking nu-protocol v0.44.0
[INFO] [stderr]     Checking nu-test-support v0.44.0
[INFO] [stderr]     Checking nu-value-ext v0.44.0
[INFO] [stderr]     Checking nu-plugin v0.44.0
[INFO] [stderr]     Checking nu_plugin_start v0.44.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.01s
[INFO] running `Command { std: "docker" "inspect" "3742d92f0459954431822e39a4c4d5bb295b9f1c6a9c5c8525aa4c53018649de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3742d92f0459954431822e39a4c4d5bb295b9f1c6a9c5c8525aa4c53018649de", kill_on_drop: false }`
[INFO] [stdout] 3742d92f0459954431822e39a4c4d5bb295b9f1c6a9c5c8525aa4c53018649de
[INFO] checking nu_plugin_start-0.44.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate nu_plugin_start 0.44.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate nu_plugin_start 0.44.0 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 nu_plugin_start 0.44.0
[INFO] finished tweaking crates.io crate nu_plugin_start 0.44.0
[INFO] tweaked toml for crates.io crate nu_plugin_start 0.44.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate nu_plugin_start 0.44.0 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] [stderr]     Blocking waiting for file lock on package cache
[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] 6ead6f47f89b109a934d82246e39fb4535b0bf636edce4c40e43d645f4ce1bd3
[INFO] running `Command { std: "docker" "start" "-a" "6ead6f47f89b109a934d82246e39fb4535b0bf636edce4c40e43d645f4ce1bd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ead6f47f89b109a934d82246e39fb4535b0bf636edce4c40e43d645f4ce1bd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ead6f47f89b109a934d82246e39fb4535b0bf636edce4c40e43d645f4ce1bd3", kill_on_drop: false }`
[INFO] [stdout] 6ead6f47f89b109a934d82246e39fb4535b0bf636edce4c40e43d645f4ce1bd3
[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] 1dba0d6926ddf139233ab8f913ebd29add58306610db2ba965b69c0852703a18
[INFO] running `Command { std: "docker" "start" "-a" "1dba0d6926ddf139233ab8f913ebd29add58306610db2ba965b69c0852703a18", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]    Compiling serde_json v1.0.78
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking pretty v0.5.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking nu-ansi-term v0.44.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking utf8-width v0.1.5
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking byte-unit v4.0.13
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking dunce v1.0.2
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking webbrowser v0.5.5
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking nu-path v0.44.0
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking url v2.2.2
[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 num v0.2.1
[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" "1dba0d6926ddf139233ab8f913ebd29add58306610db2ba965b69c0852703a18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dba0d6926ddf139233ab8f913ebd29add58306610db2ba965b69c0852703a18", kill_on_drop: false }`
[INFO] [stdout] 1dba0d6926ddf139233ab8f913ebd29add58306610db2ba965b69c0852703a18