[INFO] cloning repository https://github.com/TheAkki/CheckWebDav
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TheAkki/CheckWebDav" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheAkki%2FCheckWebDav", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheAkki%2FCheckWebDav'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4a3da28080f9857c538b9dd9a02682c66ab38407
[INFO] checking TheAkki/CheckWebDav against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheAkki%2FCheckWebDav" "/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/TheAkki/CheckWebDav 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/TheAkki/CheckWebDav
[INFO] finished tweaking git repo https://github.com/TheAkki/CheckWebDav
[INFO] tweaked toml for git repo https://github.com/TheAkki/CheckWebDav written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/TheAkki/CheckWebDav 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] 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] 8d90cae0176a809c88eeaac4339d2bc7dc3f2009be9d574b6a8c81bf2e8b7966
[INFO] running `Command { std: "docker" "start" "-a" "8d90cae0176a809c88eeaac4339d2bc7dc3f2009be9d574b6a8c81bf2e8b7966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d90cae0176a809c88eeaac4339d2bc7dc3f2009be9d574b6a8c81bf2e8b7966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d90cae0176a809c88eeaac4339d2bc7dc3f2009be9d574b6a8c81bf2e8b7966", kill_on_drop: false }`
[INFO] [stdout] 8d90cae0176a809c88eeaac4339d2bc7dc3f2009be9d574b6a8c81bf2e8b7966
[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] ba4b3474fa32f545f13e2eba000e89d51045b7721eeda157cc5489613eda426f
[INFO] running `Command { std: "docker" "start" "-a" "ba4b3474fa32f545f13e2eba000e89d51045b7721eeda157cc5489613eda426f", kill_on_drop: false }`
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking check_webdav v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/main.rs:51:31
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let source_object = actual.clone();
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Path` does not implement `Clone`, so calling `clone` on `&Path` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 51 -     let source_object = actual.clone();
[INFO] [stdout] 51 +     let source_object = actual;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/main.rs:68:35
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fs::create_dir_all(target_path.clone()).expect("Can not create parent folders");
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Path` does not implement `Clone`, so calling `clone` on `&Path` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 68 -     fs::create_dir_all(target_path.clone()).expect("Can not create parent folders");
[INFO] [stdout] 68 +     fs::create_dir_all(target_path).expect("Can not create parent folders");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/main.rs:51:31
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let source_object = actual.clone();
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Path` does not implement `Clone`, so calling `clone` on `&Path` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 51 -     let source_object = actual.clone();
[INFO] [stdout] 51 +     let source_object = actual;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/main.rs:68:35
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fs::create_dir_all(target_path.clone()).expect("Can not create parent folders");
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Path` does not implement `Clone`, so calling `clone` on `&Path` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 68 -     fs::create_dir_all(target_path.clone()).expect("Can not create parent folders");
[INFO] [stdout] 68 +     fs::create_dir_all(target_path).expect("Can not create parent folders");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "ba4b3474fa32f545f13e2eba000e89d51045b7721eeda157cc5489613eda426f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba4b3474fa32f545f13e2eba000e89d51045b7721eeda157cc5489613eda426f", kill_on_drop: false }`
[INFO] [stdout] ba4b3474fa32f545f13e2eba000e89d51045b7721eeda157cc5489613eda426f
[INFO] checking TheAkki/CheckWebDav against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheAkki%2FCheckWebDav" "/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/TheAkki/CheckWebDav 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/TheAkki/CheckWebDav
[INFO] finished tweaking git repo https://github.com/TheAkki/CheckWebDav
[INFO] tweaked toml for git repo https://github.com/TheAkki/CheckWebDav written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/TheAkki/CheckWebDav 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] 8da44ddaf85db7fa5efdabff5a0cc652e6ccb54d57557660bb1a8a9deaa76d86
[INFO] running `Command { std: "docker" "start" "-a" "8da44ddaf85db7fa5efdabff5a0cc652e6ccb54d57557660bb1a8a9deaa76d86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8da44ddaf85db7fa5efdabff5a0cc652e6ccb54d57557660bb1a8a9deaa76d86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8da44ddaf85db7fa5efdabff5a0cc652e6ccb54d57557660bb1a8a9deaa76d86", kill_on_drop: false }`
[INFO] [stdout] 8da44ddaf85db7fa5efdabff5a0cc652e6ccb54d57557660bb1a8a9deaa76d86
[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] 9366e548a76adc51fbaef388f0214966ee5a8f9e36e72d156d6566799927faeb
[INFO] running `Command { std: "docker" "start" "-a" "9366e548a76adc51fbaef388f0214966ee5a8f9e36e72d156d6566799927faeb", kill_on_drop: false }`
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/argparse-0.2.2/src/parser.rs:206:18
[INFO] [stdout]     |
[INFO] [stdout] 206 |             _ => panic!(),
[INFO] [stdout]     |                  ^^^^^^^^ cannot satisfy `_ -> _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/argparse-0.2.2/src/parser.rs:340:29
[INFO] [stdout]     |
[INFO] [stdout] 340 |                       None => match self.parser.catchall_argument {
[INFO] [stdout]     |  _____________________________^
[INFO] [stdout] 341 | |                         Some(ref option) => {
[INFO] [stdout] 342 | |                             opt = option;
[INFO] [stdout] 343 | |                             break;
[INFO] [stdout] ...   |
[INFO] [stdout] 346 | |                             "Unexpected argument {}", arg)),
[INFO] [stdout] 347 | |                     }
[INFO] [stdout]     | |_____________________^ cannot satisfy `_ -> _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/argparse-0.2.2/src/parser.rs:809:22
[INFO] [stdout]     |
[INFO] [stdout] 809 |             .map_err(|c| exit(c))
[INFO] [stdout]     |                      ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]     |
[INFO] [stdout] 809 |             .map_err(|c| -> /* Type */ { exit(c) })
[INFO] [stdout]     |                          +++++++++++++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0284.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `argparse` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "9366e548a76adc51fbaef388f0214966ee5a8f9e36e72d156d6566799927faeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9366e548a76adc51fbaef388f0214966ee5a8f9e36e72d156d6566799927faeb", kill_on_drop: false }`
[INFO] [stdout] 9366e548a76adc51fbaef388f0214966ee5a8f9e36e72d156d6566799927faeb