[INFO] fetching crate week1 0.1.8...
[INFO] checking week1-0.1.8 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate week1 0.1.8 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate week1 0.1.8 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 week1 0.1.8
[INFO] finished tweaking crates.io crate week1 0.1.8
[INFO] tweaked toml for crates.io crate week1 0.1.8 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate week1 0.1.8 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 arrayvec v0.7.3
[INFO] [stderr]   Downloaded blake2b_simd v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] d76be0d60536830c2bc8279cbbad21551915b9d391b352105bae95925a5e3d3e
[INFO] running `Command { std: "docker" "start" "-a" "d76be0d60536830c2bc8279cbbad21551915b9d391b352105bae95925a5e3d3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d76be0d60536830c2bc8279cbbad21551915b9d391b352105bae95925a5e3d3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d76be0d60536830c2bc8279cbbad21551915b9d391b352105bae95925a5e3d3e", kill_on_drop: false }`
[INFO] [stdout] d76be0d60536830c2bc8279cbbad21551915b9d391b352105bae95925a5e3d3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] d64992f81f044b83a8045fe1baf3f7233da56deedb46f9ddc16335134553b2b4
[INFO] running `Command { std: "docker" "start" "-a" "d64992f81f044b83a8045fe1baf3f7233da56deedb46f9ddc16335134553b2b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]     Checking typenum v1.16.0
[INFO] [stderr]     Checking cpufeatures v0.2.7
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]     Checking constant_time_eq v0.2.6
[INFO] [stderr]     Checking arrayvec v0.7.3
[INFO] [stderr]     Checking blake2b_simd v1.0.1
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.164
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]     Checking zeroize v1.3.0
[INFO] [stderr]     Checking curve25519-dalek v3.2.1
[INFO] [stderr]     Checking ed25519-dalek v1.0.1
[INFO] [stderr]     Checking week1 v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `hex` is imported redundantly
[INFO] [stdout]   --> src/ed25519.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use hex;
[INFO] [stdout]    |     ^^^ the item `hex` 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 `hex` is imported redundantly
[INFO] [stdout]   --> src/ed25519.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use hex;
[INFO] [stdout]    |     ^^^ the item `hex` 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] [stdout] warning: the item `hex` is imported redundantly
[INFO] [stdout]   --> src/ed25519.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use hex;
[INFO] [stdout]    |     ^^^ the item `hex` 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 `hex` is imported redundantly
[INFO] [stdout]   --> src/ed25519.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use hex;
[INFO] [stdout]    |     ^^^ the item `hex` 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 8.93s
[INFO] running `Command { std: "docker" "inspect" "d64992f81f044b83a8045fe1baf3f7233da56deedb46f9ddc16335134553b2b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d64992f81f044b83a8045fe1baf3f7233da56deedb46f9ddc16335134553b2b4", kill_on_drop: false }`
[INFO] [stdout] d64992f81f044b83a8045fe1baf3f7233da56deedb46f9ddc16335134553b2b4