[INFO] cloning repository https://github.com/rfrcanesin/ecdsa
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rfrcanesin/ecdsa" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frfrcanesin%2Fecdsa", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frfrcanesin%2Fecdsa'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13668f1db1662760ee95a738586dfe926d2d62b1
[INFO] checking rfrcanesin/ecdsa against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frfrcanesin%2Fecdsa" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rfrcanesin/ecdsa 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/rfrcanesin/ecdsa
[INFO] finished tweaking git repo https://github.com/rfrcanesin/ecdsa
[INFO] tweaked toml for git repo https://github.com/rfrcanesin/ecdsa written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rfrcanesin/ecdsa 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 autocfg v0.1.8
[INFO] [stderr]   Downloaded ff_derive-zeroize v0.6.2
[INFO] [stderr]   Downloaded rand_xorshift v0.2.0
[INFO] [stderr]   Downloaded cpufeatures v0.2.8
[INFO] [stderr]   Downloaded ff-zeroize v0.6.3
[INFO] [stderr]   Downloaded serde v1.0.164
[INFO] [stderr]   Downloaded merkle-cbt v0.3.2
[INFO] [stderr]   Downloaded rust-gmp-kzen v0.5.1
[INFO] [stderr]   Downloaded serde_derive v1.0.164
[INFO] [stderr]   Downloaded secp256k1 v0.20.3
[INFO] [stderr]   Downloaded num-bigint v0.2.6
[INFO] [stderr]   Downloaded cryptoxide v0.1.3
[INFO] [stderr]   Downloaded syn v2.0.22
[INFO] [stderr]   Downloaded curv-kzen v0.10.0
[INFO] [stderr]   Downloaded pairing-plus v0.19.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] b12555b18b560249f9ad75302f8f799ef7171860181a6a1b51f9482508b0eafb
[INFO] running `Command { std: "docker" "start" "-a" "b12555b18b560249f9ad75302f8f799ef7171860181a6a1b51f9482508b0eafb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b12555b18b560249f9ad75302f8f799ef7171860181a6a1b51f9482508b0eafb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b12555b18b560249f9ad75302f8f799ef7171860181a6a1b51f9482508b0eafb", kill_on_drop: false }`
[INFO] [stdout] b12555b18b560249f9ad75302f8f799ef7171860181a6a1b51f9482508b0eafb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 4ad95066af13026c4036c6bf3f82474433a700be71381eb3b9f97a54637ba4ef
[INFO] running `Command { std: "docker" "start" "-a" "4ad95066af13026c4036c6bf3f82474433a700be71381eb3b9f97a54637ba4ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.63
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking const-oid v0.9.2
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking base16ct v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling secp256k1-sys v0.4.2
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking cpufeatures v0.2.8
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking keccak v0.1.4
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking merkle-cbt v0.3.2
[INFO] [stderr]     Checking cryptoxide v0.1.3
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.11.1
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking hmac v0.11.0
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking sha2 v0.10.7
[INFO] [stderr]    Compiling syn v2.0.22
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking ff v0.12.1
[INFO] [stderr]     Checking signature v1.6.4
[INFO] [stderr]     Checking group v0.12.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling ff_derive-zeroize v0.6.2
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.164
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]     Checking zeroize v1.6.0
[INFO] [stderr]     Checking der v0.6.1
[INFO] [stderr]     Checking crypto-bigint v0.4.9
[INFO] [stderr]     Checking ff-zeroize v0.6.3
[INFO] [stderr]     Checking curve25519-dalek v3.2.0
[INFO] [stderr]     Checking pairing-plus v0.19.0
[INFO] [stderr]     Checking rfc6979 v0.3.1
[INFO] [stderr]     Checking spki v0.6.0
[INFO] [stderr]     Checking pkcs8 v0.9.0
[INFO] [stderr]     Checking sec1 v0.3.0
[INFO] [stderr]     Checking elliptic-curve v0.12.3
[INFO] [stderr]     Checking ecdsa v0.14.8
[INFO] [stderr]     Checking p256 v0.11.1
[INFO] [stderr]     Checking rust-gmp-kzen v0.5.1
[INFO] [stderr]     Checking secp256k1 v0.20.3
[INFO] [stderr]     Checking serde_bytes v0.11.9
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking curv-kzen v0.10.0
[INFO] [stderr]     Checking ecdsa v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ecdsa` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ecdsa;
[INFO] [stdout]   |     ^^^^^ the item `ecdsa` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ecdsa` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ecdsa;
[INFO] [stdout]   |     ^^^^^ the item `ecdsa` is already defined by prelude
[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 8.19s
[INFO] running `Command { std: "docker" "inspect" "4ad95066af13026c4036c6bf3f82474433a700be71381eb3b9f97a54637ba4ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ad95066af13026c4036c6bf3f82474433a700be71381eb3b9f97a54637ba4ef", kill_on_drop: false }`
[INFO] [stdout] 4ad95066af13026c4036c6bf3f82474433a700be71381eb3b9f97a54637ba4ef