[INFO] cloning repository https://github.com/yuk1ty/rusty-monad
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuk1ty/rusty-monad" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuk1ty%2Frusty-monad", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuk1ty%2Frusty-monad'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2976dfcb3600df760977279c31cd4de011d6c73c
[INFO] checking yuk1ty/rusty-monad against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuk1ty%2Frusty-monad" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yuk1ty/rusty-monad on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yuk1ty/rusty-monad
[INFO] finished tweaking git repo https://github.com/yuk1ty/rusty-monad
[INFO] tweaked toml for git repo https://github.com/yuk1ty/rusty-monad written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yuk1ty/rusty-monad 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b08e7ac9c18fb90e9bd5d78bacfd456c24633fefbee335e58711446a7885536
[INFO] running `Command { std: "docker" "start" "-a" "5b08e7ac9c18fb90e9bd5d78bacfd456c24633fefbee335e58711446a7885536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b08e7ac9c18fb90e9bd5d78bacfd456c24633fefbee335e58711446a7885536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b08e7ac9c18fb90e9bd5d78bacfd456c24633fefbee335e58711446a7885536", kill_on_drop: false }`
[INFO] [stdout] 5b08e7ac9c18fb90e9bd5d78bacfd456c24633fefbee335e58711446a7885536
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f9495e3a758c85ffd9d895181849f8614c262a7b7044f81eeb7c8c688aefb09
[INFO] running `Command { std: "docker" "start" "-a" "3f9495e3a758c85ffd9d895181849f8614c262a7b7044f81eeb7c8c688aefb09", kill_on_drop: false }`
[INFO] [stderr]     Checking rusty-monad v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `applicative::Applicative`, `functor::Functor`, `functor::Pointed`, and `monad::Monad`
[INFO] [stdout]  --> src/data/list.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{applicative::Applicative, functor::Functor, functor::Pointed, monad::Monad};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `mdo`
[INFO] [stdout]  --> src/lib.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | macro_rules! mdo {
[INFO] [stdout]   |              ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::data::option::*`
[INFO] [stdout]   --> src/lib.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     use crate::data::option::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | mod test_do {
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `applicative::Applicative`, `functor::Functor`, `functor::Pointed`, and `monad::Monad`
[INFO] [stdout]   --> src/lib.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |     use crate::{applicative::Applicative, functor::Functor, functor::Pointed, monad::Monad};
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | mod test_do {
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `applicative::Applicative`, `functor::Functor`, `functor::Pointed`, and `monad::Monad`
[INFO] [stdout]  --> src/data/list.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{applicative::Applicative, functor::Functor, functor::Pointed, monad::Monad};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::data::option::*`
[INFO] [stdout]   --> src/lib.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     use crate::data::option::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `applicative::Applicative` and `functor::Functor`
[INFO] [stdout]   --> src/lib.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |     use crate::{applicative::Applicative, functor::Functor, functor::Pointed, monad::Monad};
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/data/option.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn bind<B, F>(self, mut f: F) -> Option<B>
[INFO] [stdout]   |                         ----^
[INFO] [stdout]   |                         |
[INFO] [stdout]   |                         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/data/option.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn map<F, B>(self, mut f: F) -> Option<B>
[INFO] [stdout]    |                        ----^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/data/result.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn map<F, B>(self, mut f: F) -> Result<B, E>
[INFO] [stdout]    |                        ----^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Applicative` is never used
[INFO] [stdout]  --> src/applicative.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) trait Applicative: Pointed {
[INFO] [stdout]   |                  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Functor` is never used
[INFO] [stdout]  --> src/functor.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) trait Functor {
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Pointed` is never used
[INFO] [stdout]   --> src/functor.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub(crate) trait Pointed: Functor {
[INFO] [stdout]    |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Monad` is never used
[INFO] [stdout]  --> src/monad.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) trait Monad: Applicative {
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super`
[INFO] [stdout]   --> src/data/option.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     use super::*;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/data/option.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn bind<B, F>(self, mut f: F) -> Option<B>
[INFO] [stdout]   |                         ----^
[INFO] [stdout]   |                         |
[INFO] [stdout]   |                         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/data/option.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn map<F, B>(self, mut f: F) -> Option<B>
[INFO] [stdout]    |                        ----^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/data/result.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn map<F, B>(self, mut f: F) -> Result<B, E>
[INFO] [stdout]    |                        ----^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `apply` is never used
[INFO] [stdout]  --> src/applicative.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) trait Applicative: Pointed {
[INFO] [stdout]   |                  ----------- method in this trait
[INFO] [stdout] 4 |     fn apply<F, B, C>(self, b: Self::Lifted<B>, f: F) -> Self::Lifted<C>
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/data/option.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         struct Employee {
[INFO] [stdout]    |                -------- field in this struct
[INFO] [stdout] 48 |             name: String,
[INFO] [stdout]    |             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `map` is never used
[INFO] [stdout]  --> src/functor.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) trait Functor {
[INFO] [stdout]   |                  ------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 5 |     fn map<F, B>(self, f: F) -> Self::Lifted<B>
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "3f9495e3a758c85ffd9d895181849f8614c262a7b7044f81eeb7c8c688aefb09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f9495e3a758c85ffd9d895181849f8614c262a7b7044f81eeb7c8c688aefb09", kill_on_drop: false }`
[INFO] [stdout] 3f9495e3a758c85ffd9d895181849f8614c262a7b7044f81eeb7c8c688aefb09