[INFO] fetching crate benaloh-challenge 0.8.0...
[INFO] checking benaloh-challenge-0.8.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate benaloh-challenge 0.8.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate benaloh-challenge 0.8.0 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 crates.io crate benaloh-challenge 0.8.0
[INFO] finished tweaking crates.io crate benaloh-challenge 0.8.0
[INFO] tweaked toml for crates.io crate benaloh-challenge 0.8.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 44 packages
[INFO] [stderr]       Adding der v0.6.1 (latest: v0.7.9)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding pem-rfc7468 v0.6.0 (latest: v0.7.0)
[INFO] [stderr]       Adding pkcs1 v0.4.1 (latest: v0.7.5)
[INFO] [stderr]       Adding pkcs8 v0.9.0 (latest: v0.10.2)
[INFO] [stderr]       Adding rsa v0.7.2 (latest: v0.9.6)
[INFO] [stderr]       Adding signature v1.6.4 (latest: v2.2.0)
[INFO] [stderr]       Adding spin v0.5.2 (latest: v0.9.8)
[INFO] [stderr]       Adding spki v0.6.0 (latest: v0.7.3)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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 pem-rfc7468 v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ef19a1f8a4382d3e6581faa76489a1f1fa13b6a2900abb3922ce3057fcf81685
[INFO] running `Command { std: "docker" "start" "-a" "ef19a1f8a4382d3e6581faa76489a1f1fa13b6a2900abb3922ce3057fcf81685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef19a1f8a4382d3e6581faa76489a1f1fa13b6a2900abb3922ce3057fcf81685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef19a1f8a4382d3e6581faa76489a1f1fa13b6a2900abb3922ce3057fcf81685", kill_on_drop: false }`
[INFO] [stdout] ef19a1f8a4382d3e6581faa76489a1f1fa13b6a2900abb3922ce3057fcf81685
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 348c313d68b64e56c65de200b0be6a7d5bd8ba72a387c655a7db929381c83b7d
[INFO] running `Command { std: "docker" "start" "-a" "348c313d68b64e56c65de200b0be6a7d5bd8ba72a387c655a7db929381c83b7d", kill_on_drop: false }`
[INFO] [stderr]     Checking const-oid v0.9.6
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling num-bigint-dig v0.8.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking pem-rfc7468 v0.6.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking signature v1.6.4
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking der v0.6.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking spki v0.6.0
[INFO] [stderr]     Checking benaloh-challenge v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking pkcs8 v0.9.0
[INFO] [stderr]     Checking pkcs1 v0.4.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking rsa v0.7.2
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:206:16
[INFO] [stdout]     |
[INFO] [stdout] 206 |     use rand::{self, Rng, CryptoRng, RngCore};
[INFO] [stdout]     |                ^^^^ the item `rand` 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.86s
[INFO] running `Command { std: "docker" "inspect" "348c313d68b64e56c65de200b0be6a7d5bd8ba72a387c655a7db929381c83b7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "348c313d68b64e56c65de200b0be6a7d5bd8ba72a387c655a7db929381c83b7d", kill_on_drop: false }`
[INFO] [stdout] 348c313d68b64e56c65de200b0be6a7d5bd8ba72a387c655a7db929381c83b7d