[INFO] cloning repository https://github.com/RustCrypto/ring-wrappers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RustCrypto/ring-wrappers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustCrypto%2Fring-wrappers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustCrypto%2Fring-wrappers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e9fec63bc0ba224ee77277c1f968e8d8ef2da55
[INFO] checking RustCrypto/ring-wrappers against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustCrypto%2Fring-wrappers" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RustCrypto/ring-wrappers 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/RustCrypto/ring-wrappers
[INFO] finished tweaking git repo https://github.com/RustCrypto/ring-wrappers
[INFO] tweaked toml for git repo https://github.com/RustCrypto/ring-wrappers written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/RustCrypto/ring-wrappers 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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 615994368f599f06614ced4deb0077c87beb42697e039f57e859f447c369468b
[INFO] running `Command { std: "docker" "start" "-a" "615994368f599f06614ced4deb0077c87beb42697e039f57e859f447c369468b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "615994368f599f06614ced4deb0077c87beb42697e039f57e859f447c369468b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "615994368f599f06614ced4deb0077c87beb42697e039f57e859f447c369468b", kill_on_drop: false }`
[INFO] [stdout] 615994368f599f06614ced4deb0077c87beb42697e039f57e859f447c369468b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b9c36e93181bb566640b2552c6e330da17d32eb46ea31afd9dcd544dd5d66874
[INFO] running `Command { std: "docker" "start" "-a" "b9c36e93181bb566640b2552c6e330da17d32eb46ea31afd9dcd544dd5d66874", kill_on_drop: false }`
[INFO] [stderr]     Checking zeroize v1.6.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking const-oid v0.9.5
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]     Checking base16ct v0.2.0
[INFO] [stderr]     Checking blobby v0.3.1
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]     Checking der v0.7.8
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking signature v2.1.0
[INFO] [stderr]     Checking ff v0.13.0
[INFO] [stderr]     Checking hex-literal v0.4.1
[INFO] [stderr]     Checking ed25519 v2.2.3
[INFO] [stderr]     Checking group v0.13.0
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-bigint v0.5.3
[INFO] [stderr]     Checking aead v0.5.2
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking sec1 v0.7.3
[INFO] [stderr]     Checking spki v0.7.2
[INFO] [stderr]     Checking pkcs8 v0.10.2
[INFO] [stderr]    Compiling ring v0.17.5
[INFO] [stderr]     Checking elliptic-curve v0.13.6
[INFO] [stderr]     Checking ecdsa v0.16.8
[INFO] [stderr]     Checking primeorder v0.13.2
[INFO] [stderr]     Checking p256 v0.13.2
[INFO] [stderr]     Checking p384 v0.13.0
[INFO] [stderr]     Checking ring-compat v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ring` is imported redundantly
[INFO] [stdout]   --> src/signature/ecdsa/signing_key.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     self,
[INFO] [stdout]    |     ^^^^ the item `ring` 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 `TryInto` is imported redundantly
[INFO] [stdout]  --> src/signature/ecdsa/verifying_key.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use core::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/core/src/prelude/mod.rs:65:39
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/signature/ed25519.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use core::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/core/src/prelude/mod.rs:65:39
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ring` is imported redundantly
[INFO] [stdout]   --> src/signature/ed25519.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     self,
[INFO] [stdout]    |     ^^^^ the item `ring` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ring` is imported redundantly
[INFO] [stdout]   --> src/signature/ecdsa/signing_key.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     self,
[INFO] [stdout]    |     ^^^^ the item `ring` 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 `TryInto` is imported redundantly
[INFO] [stdout]  --> src/signature/ecdsa/verifying_key.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use core::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/core/src/prelude/mod.rs:65:39
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/signature/ed25519.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use core::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/core/src/prelude/mod.rs:65:39
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ring` is imported redundantly
[INFO] [stdout]   --> src/signature/ed25519.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     self,
[INFO] [stdout]    |     ^^^^ the item `ring` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> tests/signature/ecdsa/p256.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use core::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> tests/signature/ecdsa/p384.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use core::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.98s
[INFO] running `Command { std: "docker" "inspect" "b9c36e93181bb566640b2552c6e330da17d32eb46ea31afd9dcd544dd5d66874", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9c36e93181bb566640b2552c6e330da17d32eb46ea31afd9dcd544dd5d66874", kill_on_drop: false }`
[INFO] [stdout] b9c36e93181bb566640b2552c6e330da17d32eb46ea31afd9dcd544dd5d66874