[INFO] fetching crate umbral-rs 0.0.4...
[INFO] checking umbral-rs-0.0.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate umbral-rs 0.0.4 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate umbral-rs 0.0.4 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate umbral-rs 0.0.4
[INFO] finished tweaking crates.io crate umbral-rs 0.0.4
[INFO] tweaked toml for crates.io crate umbral-rs 0.0.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate umbral-rs 0.0.4 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded modinverse v0.1.1
[INFO] [stderr]   Downloaded hkdf v0.9.0
[INFO] [stderr]   Downloaded quick-error v2.0.1
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18df1a6db32ca125bac0d719409b11b9803bb7e82eaf914cb6c8f04d409f7c9f
[INFO] running `Command { std: "docker" "start" "-a" "18df1a6db32ca125bac0d719409b11b9803bb7e82eaf914cb6c8f04d409f7c9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18df1a6db32ca125bac0d719409b11b9803bb7e82eaf914cb6c8f04d409f7c9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18df1a6db32ca125bac0d719409b11b9803bb7e82eaf914cb6c8f04d409f7c9f", kill_on_drop: false }`
[INFO] [stdout] 18df1a6db32ca125bac0d719409b11b9803bb7e82eaf914cb6c8f04d409f7c9f
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f25c2f660c84fce97b3be29c928be7385b87ab5fffd8537bd9a53a03e351951a
[INFO] running `Command { std: "docker" "start" "-a" "f25c2f660c84fce97b3be29c928be7385b87ab5fffd8537bd9a53a03e351951a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]     Checking zeroize v1.6.0
[INFO] [stderr]    Compiling openssl v0.10.57
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking bitflags v2.4.0
[INFO] [stderr]     Checking keccak v0.1.4
[INFO] [stderr]    Compiling hex-literal v0.3.4
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking quick-error v2.0.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking universal-hash v0.5.1
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking aead v0.5.2
[INFO] [stderr]     Checking hmac v0.8.1
[INFO] [stderr]     Checking modinverse v0.1.1
[INFO] [stderr]     Checking blake2 v0.9.2
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking poly1305 v0.8.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking hkdf v0.9.0
[INFO] [stderr]     Checking chacha20 v0.9.1
[INFO] [stderr]    Compiling openssl-sys v0.9.93
[INFO] [stderr]     Checking chacha20poly1305 v0.10.1
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]     Checking umbral-rs v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/internal/curve.rs:476:26
[INFO] [stdout]     |
[INFO] [stdout] 476 |         let _ = self.bn().clone();
[INFO] [stdout]     |                          ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `BigNumRef` does not implement `Clone`, so calling `clone` on `&BigNumRef` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 476 -         let _ = self.bn().clone();
[INFO] [stdout] 476 +         let _ = self.bn();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `BigNumRef`, implement `Clone` for it
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/foreign-types-0.3.2/src/lib.rs:299:9
[INFO] [stdout]     |
[INFO] [stdout] 299 +         #[derive(Clone)]
[INFO] [stdout] 300 |         pub struct $borrowed($crate::Opaque);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/internal/curve.rs:476:26
[INFO] [stdout]     |
[INFO] [stdout] 476 |         let _ = self.bn().clone();
[INFO] [stdout]     |                          ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `BigNumRef` does not implement `Clone`, so calling `clone` on `&BigNumRef` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 476 -         let _ = self.bn().clone();
[INFO] [stdout] 476 +         let _ = self.bn();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `BigNumRef`, implement `Clone` for it
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/foreign-types-0.3.2/src/lib.rs:299:9
[INFO] [stdout]     |
[INFO] [stdout] 299 +         #[derive(Clone)]
[INFO] [stdout] 300 |         pub struct $borrowed($crate::Opaque);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.96s
[INFO] running `Command { std: "docker" "inspect" "f25c2f660c84fce97b3be29c928be7385b87ab5fffd8537bd9a53a03e351951a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f25c2f660c84fce97b3be29c928be7385b87ab5fffd8537bd9a53a03e351951a", kill_on_drop: false }`
[INFO] [stdout] f25c2f660c84fce97b3be29c928be7385b87ab5fffd8537bd9a53a03e351951a