[INFO] fetching crate four 0.0.13...
[INFO] checking four-0.0.13 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate four 0.0.13 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate four 0.0.13 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate four 0.0.13
[INFO] finished tweaking crates.io crate four 0.0.13
[INFO] tweaked toml for crates.io crate four 0.0.13 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 37 packages to latest compatible versions
[INFO] [stderr]       Adding idna v0.5.0 (available: v1.0.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4b159ed99f6619b112f44d6c1d5fb1c16ba791ebe203dfaddfde297026cea60
[INFO] running `Command { std: "docker" "start" "-a" "a4b159ed99f6619b112f44d6c1d5fb1c16ba791ebe203dfaddfde297026cea60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4b159ed99f6619b112f44d6c1d5fb1c16ba791ebe203dfaddfde297026cea60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4b159ed99f6619b112f44d6c1d5fb1c16ba791ebe203dfaddfde297026cea60", kill_on_drop: false }`
[INFO] [stdout] a4b159ed99f6619b112f44d6c1d5fb1c16ba791ebe203dfaddfde297026cea60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail_expr_drop_order" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77095eaa31b703f41aeef4247d1a0a66db195682c6b7ed9242a481bf3935e8a8
[INFO] running `Command { std: "docker" "start" "-a" "77095eaa31b703f41aeef4247d1a0a66db195682c6b7ed9242a481bf3935e8a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling urlencoding v2.1.3
[INFO] [stderr]    Compiling derive-new v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stderr]    Compiling convert_case v0.6.0
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling kinded_macros v0.3.0
[INFO] [stderr]    Compiling four_derive v0.0.13
[INFO] [stderr]    Compiling kinded v0.3.0
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling nutype_macros v0.5.0
[INFO] [stderr]     Checking nutype v0.5.0
[INFO] [stderr]     Checking four v0.0.13 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `WillMappable<T>` is more private than the item `WillBe::<T>::map`
[INFO] [stdout]   --> src/core/convert.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     pub fn map<U>(self) -> WillBe<U>
[INFO] [stdout] 32 | |     where
[INFO] [stdout] 33 | |         U: WillMappable<T>,
[INFO] [stdout]    | |___________________________^ method `WillBe::<T>::map` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but trait `WillMappable<T>` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> src/core/convert.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub(crate) trait WillMappable<F> {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `WillMappable<T>` is more private than the item `WillBe::<T>::map`
[INFO] [stdout]   --> src/core/convert.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     pub fn map<U>(self) -> WillBe<U>
[INFO] [stdout] 32 | |     where
[INFO] [stdout] 33 | |         U: WillMappable<T>,
[INFO] [stdout]    | |___________________________^ method `WillBe::<T>::map` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but trait `WillMappable<T>` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> src/core/convert.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub(crate) trait WillMappable<F> {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_bounds)]` 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 19.27s
[INFO] running `Command { std: "docker" "inspect" "77095eaa31b703f41aeef4247d1a0a66db195682c6b7ed9242a481bf3935e8a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77095eaa31b703f41aeef4247d1a0a66db195682c6b7ed9242a481bf3935e8a8", kill_on_drop: false }`
[INFO] [stdout] 77095eaa31b703f41aeef4247d1a0a66db195682c6b7ed9242a481bf3935e8a8