[INFO] cloning repository https://github.com/aJuvan/nu_plugin_kubectl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aJuvan/nu_plugin_kubectl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaJuvan%2Fnu_plugin_kubectl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaJuvan%2Fnu_plugin_kubectl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f30849d7ff051a6664afe253ce9bb1176c28e77
[INFO] checking aJuvan/nu_plugin_kubectl against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaJuvan%2Fnu_plugin_kubectl" "/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/aJuvan/nu_plugin_kubectl on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aJuvan/nu_plugin_kubectl
[INFO] finished tweaking git repo https://github.com/aJuvan/nu_plugin_kubectl
[INFO] tweaked toml for git repo https://github.com/aJuvan/nu_plugin_kubectl written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/aJuvan/nu_plugin_kubectl 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded byte-unit v4.0.12
[INFO] [stderr]   Downloaded bigdecimal-rs v0.2.1
[INFO] [stderr]   Downloaded utf8-width v0.1.5
[INFO] [stderr]   Downloaded nu-ansi-term v0.37.0
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[INFO] [stderr]   Downloaded tower v0.4.8
[INFO] [stderr]   Downloaded tracing-attributes v0.1.16
[INFO] [stderr]   Downloaded kube-runtime v0.60.0
[INFO] [stderr]   Downloaded hamcrest2 v0.3.0
[INFO] [stderr]   Downloaded nu-test-support v0.37.0
[INFO] [stderr]   Downloaded nu-value-ext v0.37.0
[INFO] [stderr]   Downloaded nu-plugin v0.37.0
[INFO] [stderr]   Downloaded nu-protocol v0.37.0
[INFO] [stderr]   Downloaded nu-path v0.37.0
[INFO] [stderr]   Downloaded kube v0.60.0
[INFO] [stderr]   Downloaded k8s-openapi v0.13.0
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 33723386343db7cf8ce2a35c70a0e5bba537e8cd2efd58645a79372fc476cc21
[INFO] running `Command { std: "docker" "start" "-a" "33723386343db7cf8ce2a35c70a0e5bba537e8cd2efd58645a79372fc476cc21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33723386343db7cf8ce2a35c70a0e5bba537e8cd2efd58645a79372fc476cc21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33723386343db7cf8ce2a35c70a0e5bba537e8cd2efd58645a79372fc476cc21", kill_on_drop: false }`
[INFO] [stdout] 33723386343db7cf8ce2a35c70a0e5bba537e8cd2efd58645a79372fc476cc21
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab5777cd9a8c8d6858c0005442efe8b7a612507f72745521dbbd5304a164f9db
[INFO] running `Command { std: "docker" "start" "-a" "ab5777cd9a8c8d6858c0005442efe8b7a612507f72745521dbbd5304a164f9db", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
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[INFO] [stderr]     Checking ppv-lite86 v0.2.10
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[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking nu-path v0.37.0
[INFO] [stderr]     Checking dashmap v4.0.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking num v0.2.1
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[INFO] [stderr]     Checking hamcrest2 v0.3.0
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.16
[INFO] [stderr]    Compiling derive-new v0.5.9
[INFO] [stderr]    Compiling getset v0.1.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling snafu-derive v0.6.10
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking tracing v0.1.28
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[INFO] [stderr]     Checking thiserror v1.0.29
[INFO] [stderr]     Checking hyper v0.14.13
[INFO] [stderr]     Checking futures-executor v0.3.17
[INFO] [stderr]     Checking tower v0.4.8
[INFO] [stderr]     Checking tower-http v0.1.1
[INFO] [stderr]     Checking futures v0.3.17
[INFO] [stderr]     Checking hyper-timeout v0.4.1
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking nu-source v0.37.0
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking serde_yaml v0.8.21
[INFO] [stderr]     Checking chrono-humanize v0.2.1
[INFO] [stderr]     Checking treediff v3.0.2
[INFO] [stderr]     Checking jsonpath_lib v0.3.0
[INFO] [stderr]     Checking json-patch v0.2.6
[INFO] [stderr]     Checking bigdecimal-rs v0.2.1
[INFO] [stderr]     Checking nu-errors v0.37.0
[INFO] [stderr]     Checking nu-protocol v0.37.0
[INFO] [stderr]     Checking nu-value-ext v0.37.0
[INFO] [stderr]     Checking nu-test-support v0.37.0
[INFO] [stderr]     Checking nu-plugin v0.37.0
[INFO] [stderr]     Checking kube-core v0.60.0
[INFO] [stderr]     Checking kube v0.60.0
[INFO] [stderr]     Checking kube-runtime v0.60.0
[INFO] [stderr]     Checking nu_plugin_kubectl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/kubectl.rs:75:14
[INFO] [stdout]    |
[INFO] [stdout] 75 |         for arg in call_info.args.positional {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 75 |         while let Some(arg) = call_info.args.positional {
[INFO] [stdout]    |         ~~~~~~~~~~~~~~~   ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 75 |         if let Some(arg) = call_info.args.positional {
[INFO] [stdout]    |         ~~~~~~~~~~~~   ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/kubectl.rs:75:14
[INFO] [stdout]    |
[INFO] [stdout] 75 |         for arg in call_info.args.positional {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 75 |         while let Some(arg) = call_info.args.positional {
[INFO] [stdout]    |         ~~~~~~~~~~~~~~~   ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 75 |         if let Some(arg) = call_info.args.positional {
[INFO] [stdout]    |         ~~~~~~~~~~~~   ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 49.24s
[INFO] running `Command { std: "docker" "inspect" "ab5777cd9a8c8d6858c0005442efe8b7a612507f72745521dbbd5304a164f9db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab5777cd9a8c8d6858c0005442efe8b7a612507f72745521dbbd5304a164f9db", kill_on_drop: false }`
[INFO] [stdout] ab5777cd9a8c8d6858c0005442efe8b7a612507f72745521dbbd5304a164f9db
[INFO] checking aJuvan/nu_plugin_kubectl against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaJuvan%2Fnu_plugin_kubectl" "/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/aJuvan/nu_plugin_kubectl on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aJuvan/nu_plugin_kubectl
[INFO] finished tweaking git repo https://github.com/aJuvan/nu_plugin_kubectl
[INFO] tweaked toml for git repo https://github.com/aJuvan/nu_plugin_kubectl written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/aJuvan/nu_plugin_kubectl 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75fe4797f29401cda206d86b741d2307f982bad5ec8c1d692e679db5a0e0fefa
[INFO] running `Command { std: "docker" "start" "-a" "75fe4797f29401cda206d86b741d2307f982bad5ec8c1d692e679db5a0e0fefa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75fe4797f29401cda206d86b741d2307f982bad5ec8c1d692e679db5a0e0fefa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75fe4797f29401cda206d86b741d2307f982bad5ec8c1d692e679db5a0e0fefa", kill_on_drop: false }`
[INFO] [stdout] 75fe4797f29401cda206d86b741d2307f982bad5ec8c1d692e679db5a0e0fefa
[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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfe9db0dc0e1ed82dc0a43a29a7ed6422c9440b4288bcb4bb6cf0921398b23aa
[INFO] running `Command { std: "docker" "start" "-a" "dfe9db0dc0e1ed82dc0a43a29a7ed6422c9440b4288bcb4bb6cf0921398b23aa", kill_on_drop: false }`
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[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/kubectl.rs:75:14
[INFO] [stdout]    |
[INFO] [stdout] 75 |         for arg in call_info.args.positional {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 75 |         while let Some(arg) = call_info.args.positional {
[INFO] [stdout]    |         ~~~~~~~~~~~~~~~   ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 75 |         if let Some(arg) = call_info.args.positional {
[INFO] [stdout]    |         ~~~~~~~~~~~~   ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/kubectl.rs:75:14
[INFO] [stdout]    |
[INFO] [stdout] 75 |         for arg in call_info.args.positional {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 75 |         while let Some(arg) = call_info.args.positional {
[INFO] [stdout]    |         ~~~~~~~~~~~~~~~   ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 75 |         if let Some(arg) = call_info.args.positional {
[INFO] [stdout]    |         ~~~~~~~~~~~~   ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.94s
[INFO] running `Command { std: "docker" "inspect" "dfe9db0dc0e1ed82dc0a43a29a7ed6422c9440b4288bcb4bb6cf0921398b23aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfe9db0dc0e1ed82dc0a43a29a7ed6422c9440b4288bcb4bb6cf0921398b23aa", kill_on_drop: false }`
[INFO] [stdout] dfe9db0dc0e1ed82dc0a43a29a7ed6422c9440b4288bcb4bb6cf0921398b23aa