[INFO] cloning repository https://github.com/breqdev/vanity-key
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/breqdev/vanity-key" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreqdev%2Fvanity-key", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreqdev%2Fvanity-key'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b0b7ddc8c51dddc83fa9a5b2a4b7da2d3d7d43b
[INFO] checking breqdev/vanity-key against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreqdev%2Fvanity-key" "/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/breqdev/vanity-key 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/breqdev/vanity-key
[INFO] finished tweaking git repo https://github.com/breqdev/vanity-key
[INFO] tweaked toml for git repo https://github.com/breqdev/vanity-key written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/breqdev/vanity-key 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 rsa v0.7.1
[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] ecb83785374eb4a5c6e9e41e435b30379eb9fdba0a654fd0544104b4b9ec551b
[INFO] running `Command { std: "docker" "start" "-a" "ecb83785374eb4a5c6e9e41e435b30379eb9fdba0a654fd0544104b4b9ec551b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecb83785374eb4a5c6e9e41e435b30379eb9fdba0a654fd0544104b4b9ec551b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecb83785374eb4a5c6e9e41e435b30379eb9fdba0a654fd0544104b4b9ec551b", kill_on_drop: false }`
[INFO] [stdout] ecb83785374eb4a5c6e9e41e435b30379eb9fdba0a654fd0544104b4b9ec551b
[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] 6d04039aa5f5f0aecd124ae9910f19aa4612d27d9773f4559020e09bd975ecb3
[INFO] running `Command { std: "docker" "start" "-a" "6d04039aa5f5f0aecd124ae9910f19aa4612d27d9773f4559020e09bd975ecb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling libm v0.2.5
[INFO] [stderr]     Checking const-oid v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking base64ct v1.5.3
[INFO] [stderr]     Checking zeroize v1.5.7
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking pem-rfc7468 v0.6.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking der v0.6.0
[INFO] [stderr]    Compiling num-bigint-dig v0.8.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking spki v0.6.0
[INFO] [stderr]     Checking pkcs8 v0.9.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking pkcs1 v0.4.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.5
[INFO] [stderr]     Checking signature v1.6.4
[INFO] [stderr]     Checking rsa v0.7.1
[INFO] [stderr]     Checking vanity-key v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `numberize` is never used
[INFO] [stdout]   --> src/main.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn numberize(start: &str) -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `numberize` is never used
[INFO] [stdout]   --> src/main.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn numberize(start: &str) -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 4.46s
[INFO] running `Command { std: "docker" "inspect" "6d04039aa5f5f0aecd124ae9910f19aa4612d27d9773f4559020e09bd975ecb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d04039aa5f5f0aecd124ae9910f19aa4612d27d9773f4559020e09bd975ecb3", kill_on_drop: false }`
[INFO] [stdout] 6d04039aa5f5f0aecd124ae9910f19aa4612d27d9773f4559020e09bd975ecb3
[INFO] checking breqdev/vanity-key against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreqdev%2Fvanity-key" "/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/breqdev/vanity-key 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/breqdev/vanity-key
[INFO] finished tweaking git repo https://github.com/breqdev/vanity-key
[INFO] tweaked toml for git repo https://github.com/breqdev/vanity-key written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/breqdev/vanity-key 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] 23b5d2ca875c588b3672d5858abb2743b1c28d79dcc9db8e06213efdcdfa2918
[INFO] running `Command { std: "docker" "start" "-a" "23b5d2ca875c588b3672d5858abb2743b1c28d79dcc9db8e06213efdcdfa2918", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23b5d2ca875c588b3672d5858abb2743b1c28d79dcc9db8e06213efdcdfa2918", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23b5d2ca875c588b3672d5858abb2743b1c28d79dcc9db8e06213efdcdfa2918", kill_on_drop: false }`
[INFO] [stdout] 23b5d2ca875c588b3672d5858abb2743b1c28d79dcc9db8e06213efdcdfa2918
[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] ad3c794b59e13f9a24773b4b2fa1b5714d58bdbd312c1fbe3a6c62ce866d645f
[INFO] running `Command { std: "docker" "start" "-a" "ad3c794b59e13f9a24773b4b2fa1b5714d58bdbd312c1fbe3a6c62ce866d645f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking const-oid v0.9.0
[INFO] [stderr]    Compiling libm v0.2.5
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking base64ct v1.5.3
[INFO] [stderr]     Checking zeroize v1.5.7
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking pem-rfc7468 v0.6.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking der v0.6.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling num-bigint-dig v0.8.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/der-0.6.0/src/writer/slice.rs:34:18
[INFO] [stdout]    |
[INFO] [stdout] 34 |             self.error(ErrorKind::Failed)?;
[INFO] [stdout]    |                  ^^^^^ cannot infer type of the type parameter `T` declared on the method `error`
[INFO] [stdout]    |
[INFO] [stdout] help: consider specifying the generic argument
[INFO] [stdout]    |
[INFO] [stdout] 34 |             self.error::<T>(ErrorKind::Failed)?;
[INFO] [stdout]    |                       +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking base64 v0.13.1
[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 `der` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ad3c794b59e13f9a24773b4b2fa1b5714d58bdbd312c1fbe3a6c62ce866d645f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad3c794b59e13f9a24773b4b2fa1b5714d58bdbd312c1fbe3a6c62ce866d645f", kill_on_drop: false }`
[INFO] [stdout] ad3c794b59e13f9a24773b4b2fa1b5714d58bdbd312c1fbe3a6c62ce866d645f