[INFO] fetching crate partial-functional 0.1.0...
[INFO] checking partial-functional-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate partial-functional 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate partial-functional 0.1.0 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 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-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded test-case v2.1.0
[INFO] [stderr]   Downloaded partfun_derive v0.1.0
[INFO] [stderr]   Downloaded paste v1.0.7
[INFO] [stderr]   Downloaded test-case-macros v2.1.0
[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] 6689dcf2a316735aa2bf63d9aa868e0bd8f8ec7512b42c2071f2bc7e6a594aac
[INFO] running `Command { std: "docker" "start" "-a" "6689dcf2a316735aa2bf63d9aa868e0bd8f8ec7512b42c2071f2bc7e6a594aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6689dcf2a316735aa2bf63d9aa868e0bd8f8ec7512b42c2071f2bc7e6a594aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6689dcf2a316735aa2bf63d9aa868e0bd8f8ec7512b42c2071f2bc7e6a594aac", kill_on_drop: false }`
[INFO] [stdout] 6689dcf2a316735aa2bf63d9aa868e0bd8f8ec7512b42c2071f2bc7e6a594aac
[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] 01592564d4ef3dedf17aaa720be94cd27b8379f707cc51a68fc5ddb1f105371a
[INFO] running `Command { std: "docker" "start" "-a" "01592564d4ef3dedf17aaa720be94cd27b8379f707cc51a68fc5ddb1f105371a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking env_logger v0.8.4
[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 9.92s
[INFO] running `Command { std: "docker" "inspect" "01592564d4ef3dedf17aaa720be94cd27b8379f707cc51a68fc5ddb1f105371a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01592564d4ef3dedf17aaa720be94cd27b8379f707cc51a68fc5ddb1f105371a", kill_on_drop: false }`
[INFO] [stdout] 01592564d4ef3dedf17aaa720be94cd27b8379f707cc51a68fc5ddb1f105371a
[INFO] checking partial-functional-0.1.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate partial-functional 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate partial-functional 0.1.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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-4-tc2/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3962d3b0d5c0c19e6c081ccf95ee159852d3647e3b3bf59f303e6a3505426a7d
[INFO] running `Command { std: "docker" "start" "-a" "3962d3b0d5c0c19e6c081ccf95ee159852d3647e3b3bf59f303e6a3505426a7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3962d3b0d5c0c19e6c081ccf95ee159852d3647e3b3bf59f303e6a3505426a7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3962d3b0d5c0c19e6c081ccf95ee159852d3647e3b3bf59f303e6a3505426a7d", kill_on_drop: false }`
[INFO] [stdout] 3962d3b0d5c0c19e6c081ccf95ee159852d3647e3b3bf59f303e6a3505426a7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3753b89c40c6daa02c9bf3a2669cfcf51e7caf6749e906282368f07c753b60c5
[INFO] running `Command { std: "docker" "start" "-a" "3753b89c40c6daa02c9bf3a2669cfcf51e7caf6749e906282368f07c753b60c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[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 regex v1.5.6
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking quickcheck v1.0.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling partfun_derive v0.1.0
[INFO] [stderr]    Compiling test-case-macros v2.1.0
[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 11.78s
[INFO] running `Command { std: "docker" "inspect" "3753b89c40c6daa02c9bf3a2669cfcf51e7caf6749e906282368f07c753b60c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3753b89c40c6daa02c9bf3a2669cfcf51e7caf6749e906282368f07c753b60c5", kill_on_drop: false }`
[INFO] [stdout] 3753b89c40c6daa02c9bf3a2669cfcf51e7caf6749e906282368f07c753b60c5