[INFO] fetching crate pomidorka 0.1.2...
[INFO] checking pomidorka-0.1.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate pomidorka 0.1.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate pomidorka 0.1.2 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 pomidorka 0.1.2
[INFO] finished tweaking crates.io crate pomidorka 0.1.2
[INFO] tweaked toml for crates.io crate pomidorka 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate pomidorka 0.1.2 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 thiserror v1.0.15
[INFO] [stderr]   Downloaded cpal v0.11.0
[INFO] [stderr]   Downloaded coreaudio-sys v0.2.4
[INFO] [stderr]   Downloaded coreaudio-rs v0.9.1
[INFO] [stderr]   Downloaded thiserror-impl v1.0.15
[INFO] [stderr]   Downloaded minimp3 v0.3.5
[INFO] [stderr]   Downloaded claxon v0.4.2
[INFO] [stderr]   Downloaded ogg v0.7.0
[INFO] [stderr]   Downloaded alsa-sys v0.1.2
[INFO] [stderr]   Downloaded lewton v0.10.1
[INFO] [stderr]   Downloaded bindgen v0.53.2
[INFO] [stderr]   Downloaded rodio v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 6458d925de6dabd18f59a0179f57ef181c0f2c9ddf791c81f8a535e5732f8b21
[INFO] running `Command { std: "docker" "start" "-a" "6458d925de6dabd18f59a0179f57ef181c0f2c9ddf791c81f8a535e5732f8b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6458d925de6dabd18f59a0179f57ef181c0f2c9ddf791c81f8a535e5732f8b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6458d925de6dabd18f59a0179f57ef181c0f2c9ddf791c81f8a535e5732f8b21", kill_on_drop: false }`
[INFO] [stdout] 6458d925de6dabd18f59a0179f57ef181c0f2c9ddf791c81f8a535e5732f8b21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a2d2f862650fc98befb6989e3834bfacb86200c14f864f3ff27fe4a48ee65132
[INFO] running `Command { std: "docker" "start" "-a" "a2d2f862650fc98befb6989e3834bfacb86200c14f864f3ff27fe4a48ee65132", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling cpal v0.11.0
[INFO] [stderr]     Checking tinyvec v0.3.3
[INFO] [stderr]     Checking claxon v0.4.2
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]     Checking ogg v0.7.0
[INFO] [stderr]     Checking lewton v0.10.1
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking minimp3 v0.3.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.15
[INFO] [stderr]     Checking thiserror v1.0.15
[INFO] [stderr]     Checking rodio v0.11.0
[INFO] [stderr]     Checking pomidorka v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.08s
[INFO] running `Command { std: "docker" "inspect" "a2d2f862650fc98befb6989e3834bfacb86200c14f864f3ff27fe4a48ee65132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2d2f862650fc98befb6989e3834bfacb86200c14f864f3ff27fe4a48ee65132", kill_on_drop: false }`
[INFO] [stdout] a2d2f862650fc98befb6989e3834bfacb86200c14f864f3ff27fe4a48ee65132
[INFO] checking pomidorka-0.1.2 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate pomidorka 0.1.2 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate pomidorka 0.1.2 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 pomidorka 0.1.2
[INFO] finished tweaking crates.io crate pomidorka 0.1.2
[INFO] tweaked toml for crates.io crate pomidorka 0.1.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate pomidorka 0.1.2 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 1240cdd7b713ef4c222bffc6c6d88c274db6758a494cd41b0dcdc6b8f6d083dd
[INFO] running `Command { std: "docker" "start" "-a" "1240cdd7b713ef4c222bffc6c6d88c274db6758a494cd41b0dcdc6b8f6d083dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1240cdd7b713ef4c222bffc6c6d88c274db6758a494cd41b0dcdc6b8f6d083dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1240cdd7b713ef4c222bffc6c6d88c274db6758a494cd41b0dcdc6b8f6d083dd", kill_on_drop: false }`
[INFO] [stdout] 1240cdd7b713ef4c222bffc6c6d88c274db6758a494cd41b0dcdc6b8f6d083dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] aa62354a920ef225884cc8ba0559b0e02179ddc9c90ad8bd88a08cd360a7b6b8
[INFO] running `Command { std: "docker" "start" "-a" "aa62354a920ef225884cc8ba0559b0e02179ddc9c90ad8bd88a08cd360a7b6b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling cpal v0.11.0
[INFO] [stderr]     Checking tinyvec v0.3.3
[INFO] [stderr]     Checking claxon v0.4.2
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "aa62354a920ef225884cc8ba0559b0e02179ddc9c90ad8bd88a08cd360a7b6b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa62354a920ef225884cc8ba0559b0e02179ddc9c90ad8bd88a08cd360a7b6b8", kill_on_drop: false }`
[INFO] [stdout] aa62354a920ef225884cc8ba0559b0e02179ddc9c90ad8bd88a08cd360a7b6b8