[INFO] fetching crate partial-functional 0.1.0...
[INFO] checking partial-functional-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate partial-functional 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate partial-functional 0.1.0 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 partial-functional 0.1.0
[INFO] finished tweaking crates.io crate partial-functional 0.1.0
[INFO] tweaked toml for crates.io crate partial-functional 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate partial-functional 0.1.0 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 test-case v2.1.0
[INFO] [stderr]   Downloaded test-case-macros v2.1.0
[INFO] [stderr]   Downloaded partfun_derive v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e0fe14ca6806a643eb2fd750bc9f6412b66ad961613196bf0e76e324c0406634
[INFO] running `Command { std: "docker" "start" "-a" "e0fe14ca6806a643eb2fd750bc9f6412b66ad961613196bf0e76e324c0406634", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0fe14ca6806a643eb2fd750bc9f6412b66ad961613196bf0e76e324c0406634", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0fe14ca6806a643eb2fd750bc9f6412b66ad961613196bf0e76e324c0406634", kill_on_drop: false }`
[INFO] [stdout] e0fe14ca6806a643eb2fd750bc9f6412b66ad961613196bf0e76e324c0406634
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f78c84ec8e0ab3d8fe594959158496be15ea4bbeceac793c598b017066650d18
[INFO] running `Command { std: "docker" "start" "-a" "f78c84ec8e0ab3d8fe594959158496be15ea4bbeceac793c598b017066650d18", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking quickcheck v1.0.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling test-case-macros v2.1.0
[INFO] [stderr]    Compiling partfun_derive v0.1.0
[INFO] [stderr]    Compiling quickcheck_macros v1.0.0
[INFO] [stderr]     Checking partial-functional v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `num_traits` is imported redundantly
[INFO] [stdout]  --> src/monoid/product.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num_traits;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `num_traits` 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]     Checking test-case v2.1.0
[INFO] [stdout] warning: the item `num_traits` is imported redundantly
[INFO] [stdout]  --> src/monoid/product.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num_traits;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `num_traits` 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 `Last` is imported redundantly
[INFO] [stdout]   --> src/monoid/mod.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     use super::*;
[INFO] [stdout]    |         -------- the item `Last` is already imported here
[INFO] [stdout] 36 |
[INFO] [stdout] 37 |     use super::last::Last;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sum` is imported redundantly
[INFO] [stdout]   --> src/monoid/mod.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     use super::*;
[INFO] [stdout]    |         -------- the item `Sum` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 38 |     use super::sum::Sum;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `Command { std: "docker" "inspect" "f78c84ec8e0ab3d8fe594959158496be15ea4bbeceac793c598b017066650d18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f78c84ec8e0ab3d8fe594959158496be15ea4bbeceac793c598b017066650d18", kill_on_drop: false }`
[INFO] [stdout] f78c84ec8e0ab3d8fe594959158496be15ea4bbeceac793c598b017066650d18