[INFO] cloning repository https://github.com/bjornmolin/poc-bip32
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bjornmolin/poc-bip32" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbjornmolin%2Fpoc-bip32", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbjornmolin%2Fpoc-bip32'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f719df459198691b75a217961274ce8f8d950319
[INFO] checking bjornmolin/poc-bip32 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbjornmolin%2Fpoc-bip32" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bjornmolin/poc-bip32 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/bjornmolin/poc-bip32
[INFO] finished tweaking git repo https://github.com/bjornmolin/poc-bip32
[INFO] tweaked toml for git repo https://github.com/bjornmolin/poc-bip32 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bjornmolin/poc-bip32 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 bip32 v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] b7f542350a87daae772cdc5416ad710035e28cbf00d0a3cac0a1f5475e01ef51
[INFO] running `Command { std: "docker" "start" "-a" "b7f542350a87daae772cdc5416ad710035e28cbf00d0a3cac0a1f5475e01ef51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7f542350a87daae772cdc5416ad710035e28cbf00d0a3cac0a1f5475e01ef51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7f542350a87daae772cdc5416ad710035e28cbf00d0a3cac0a1f5475e01ef51", kill_on_drop: false }`
[INFO] [stdout] b7f542350a87daae772cdc5416ad710035e28cbf00d0a3cac0a1f5475e01ef51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] ee38b9d82ea04c28dc56fba4c553528b6eff55122616a6450e4b79d54883674e
[INFO] running `Command { std: "docker" "start" "-a" "ee38b9d82ea04c28dc56fba4c553528b6eff55122616a6450e4b79d54883674e", kill_on_drop: false }`
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking base16ct v0.2.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking der v0.7.8
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking sec1 v0.7.3
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking ripemd v0.1.3
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rfc6979 v0.4.0
[INFO] [stderr]     Checking pbkdf2 v0.12.2
[INFO] [stderr]     Checking ff v0.13.0
[INFO] [stderr]     Checking crypto-bigint v0.5.5
[INFO] [stderr]     Checking signature v2.2.0
[INFO] [stderr]     Checking group v0.13.0
[INFO] [stderr]     Checking bs58 v0.5.0
[INFO] [stderr]     Checking elliptic-curve v0.13.8
[INFO] [stderr]     Checking ecdsa v0.16.9
[INFO] [stderr]     Checking k256 v0.13.3
[INFO] [stderr]     Checking bip32 v0.5.1
[INFO] [stderr]     Checking poc-bip32 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 3.15s
[INFO] running `Command { std: "docker" "inspect" "ee38b9d82ea04c28dc56fba4c553528b6eff55122616a6450e4b79d54883674e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee38b9d82ea04c28dc56fba4c553528b6eff55122616a6450e4b79d54883674e", kill_on_drop: false }`
[INFO] [stdout] ee38b9d82ea04c28dc56fba4c553528b6eff55122616a6450e4b79d54883674e
[INFO] checking bjornmolin/poc-bip32 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbjornmolin%2Fpoc-bip32" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bjornmolin/poc-bip32 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/bjornmolin/poc-bip32
[INFO] finished tweaking git repo https://github.com/bjornmolin/poc-bip32
[INFO] tweaked toml for git repo https://github.com/bjornmolin/poc-bip32 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/bjornmolin/poc-bip32 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1002f9be017acc72a32142abba4023bf4f8da17f108c25d27152e12c47f2c769
[INFO] running `Command { std: "docker" "start" "-a" "1002f9be017acc72a32142abba4023bf4f8da17f108c25d27152e12c47f2c769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1002f9be017acc72a32142abba4023bf4f8da17f108c25d27152e12c47f2c769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1002f9be017acc72a32142abba4023bf4f8da17f108c25d27152e12c47f2c769", kill_on_drop: false }`
[INFO] [stdout] 1002f9be017acc72a32142abba4023bf4f8da17f108c25d27152e12c47f2c769
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 0aeda0f09372ce40d5b36cf667a93a4e1d2b8d521f4b37282b9d52f3d3f0a355
[INFO] running `Command { std: "docker" "start" "-a" "0aeda0f09372ce40d5b36cf667a93a4e1d2b8d521f4b37282b9d52f3d3f0a355", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking const-oid v0.9.6
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking base16ct v0.2.0
[INFO] [stderr]     Checking typenum v1.17.0
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]     Checking der v0.7.8
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/der-0.7.8/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] [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" "0aeda0f09372ce40d5b36cf667a93a4e1d2b8d521f4b37282b9d52f3d3f0a355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0aeda0f09372ce40d5b36cf667a93a4e1d2b8d521f4b37282b9d52f3d3f0a355", kill_on_drop: false }`
[INFO] [stdout] 0aeda0f09372ce40d5b36cf667a93a4e1d2b8d521f4b37282b9d52f3d3f0a355