[INFO] cloning repository https://github.com/somthn0somthn/rust-functional-adts
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/somthn0somthn/rust-functional-adts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsomthn0somthn%2Frust-functional-adts", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsomthn0somthn%2Frust-functional-adts'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 554d51456dafd1e7ec6beda0ed52a52dbc91f203
[INFO] checking somthn0somthn/rust-functional-adts against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsomthn0somthn%2Frust-functional-adts" "/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/somthn0somthn/rust-functional-adts 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/somthn0somthn/rust-functional-adts
[INFO] finished tweaking git repo https://github.com/somthn0somthn/rust-functional-adts
[INFO] tweaked toml for git repo https://github.com/somthn0somthn/rust-functional-adts written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/somthn0somthn/rust-functional-adts 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] b88c86f5d54fea630a17ae16def87606397c70ed529441207648e322a96d930b
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[INFO] [stdout] b88c86f5d54fea630a17ae16def87606397c70ed529441207648e322a96d930b
[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] 6837cec265c5a37898c1585bbb60a52130ca101f58f6f9a91d6c2ce98405029e
[INFO] running `Command { std: "docker" "start" "-a" "6837cec265c5a37898c1585bbb60a52130ca101f58f6f9a91d6c2ce98405029e", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-adts v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `forall_t` should have an upper camel case name
[INFO] [stdout]  --> src/plug.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct forall_t;
[INFO] [stdout]   |            ^^^^^^^^ help: convert the identifier to upper camel case: `ForallT`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated type `result_t` should have an upper camel case name
[INFO] [stdout]   --> src/plug.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     type result_t;
[INFO] [stdout]    |          ^^^^^^^^ help: convert the identifier to upper camel case: `ResultT`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Concrete`, `Wrapper`, and `forall_t`
[INFO] [stdout]  --> src/classes.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::plug::{Concrete, Unplug, Plug, forall_t, Wrapper};
[INFO] [stdout]   |                   ^^^^^^^^                ^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Wrapper`
[INFO] [stdout]  --> src/main.rs:9:46
[INFO] [stdout]   |
[INFO] [stdout] 9 | use plug::{Concrete, Unplug, Plug, forall_t, Wrapper};
[INFO] [stdout]   |                                              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Applicative`, `Foldable`, `Monad`, and `Monoid`
[INFO] [stdout]   --> src/main.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | use classes::{Monoid, Functor, Applicative, Monad, Foldable, Traversable};
[INFO] [stdout]    |               ^^^^^^           ^^^^^^^^^^^  ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sum::SumMonoid`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use sum::SumMonoid;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `forall_t` should have an upper camel case name
[INFO] [stdout]  --> src/plug.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct forall_t;
[INFO] [stdout]   |            ^^^^^^^^ help: convert the identifier to upper camel case: `ForallT`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `product::ProductMonoid`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use product::ProductMonoid;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:69:81
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let opt_vec_none: Concrete<Option<forall_t>, Vec<i32>> = Concrete::of(None);;
[INFO] [stdout]    |                                                                                 ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated type `result_t` should have an upper camel case name
[INFO] [stdout]   --> src/plug.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     type result_t;
[INFO] [stdout]    |          ^^^^^^^^ help: convert the identifier to upper camel case: `ResultT`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Concrete`, `Wrapper`, and `forall_t`
[INFO] [stdout]  --> src/classes.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::plug::{Concrete, Unplug, Plug, forall_t, Wrapper};
[INFO] [stdout]   |                   ^^^^^^^^                ^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Wrapper`
[INFO] [stdout]  --> src/main.rs:9:46
[INFO] [stdout]   |
[INFO] [stdout] 9 | use plug::{Concrete, Unplug, Plug, forall_t, Wrapper};
[INFO] [stdout]   |                                              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Applicative`, `Foldable`, `Monad`, and `Monoid`
[INFO] [stdout]   --> src/main.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | use classes::{Monoid, Functor, Applicative, Monad, Foldable, Traversable};
[INFO] [stdout]    |               ^^^^^^           ^^^^^^^^^^^  ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sum::SumMonoid`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use sum::SumMonoid;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `product::ProductMonoid`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use product::ProductMonoid;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:69:81
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let opt_vec_none: Concrete<Option<forall_t>, Vec<i32>> = Concrete::of(None);;
[INFO] [stdout]    |                                                                                 ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/result.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Err(err) => a,
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/result.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Err(err) => a,
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `functor_test` is never used
[INFO] [stdout]   --> src/main.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn functor_test<M: Functor, A, B, C>(
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_to_string` is never used
[INFO] [stdout]   --> src/main.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn int_to_string(i: i32) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_to_conc_string` is never used
[INFO] [stdout]   --> src/main.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn int_to_conc_string(i: i32) -> Concrete<Vec<forall_t>, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_to_conc_opt_string` is never used
[INFO] [stdout]   --> src/main.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn int_to_conc_opt_string(i: i32) -> Concrete<Option<forall_t>, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_to_conc_result_string` is never used
[INFO] [stdout]   --> src/main.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn int_to_conc_result_string(i: i32) -> Concrete<Result<forall_t, String>, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `foldMap` should have a snake case name
[INFO] [stdout]   --> src/classes.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn foldMap<G, F>(g: G, s: Self) -> F
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to snake case: `fold_map`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `functor_test` is never used
[INFO] [stdout]   --> src/main.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn functor_test<M: Functor, A, B, C>(
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_to_string` is never used
[INFO] [stdout]   --> src/main.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn int_to_string(i: i32) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_to_conc_string` is never used
[INFO] [stdout]   --> src/main.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn int_to_conc_string(i: i32) -> Concrete<Vec<forall_t>, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_to_conc_opt_string` is never used
[INFO] [stdout]   --> src/main.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn int_to_conc_opt_string(i: i32) -> Concrete<Option<forall_t>, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_to_conc_result_string` is never used
[INFO] [stdout]   --> src/main.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn int_to_conc_result_string(i: i32) -> Concrete<Result<forall_t, String>, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `foldMap` should have a snake case name
[INFO] [stdout]   --> src/classes.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn foldMap<G, F>(g: G, s: Self) -> F
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to snake case: `fold_map`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "6837cec265c5a37898c1585bbb60a52130ca101f58f6f9a91d6c2ce98405029e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6837cec265c5a37898c1585bbb60a52130ca101f58f6f9a91d6c2ce98405029e", kill_on_drop: false }`
[INFO] [stdout] 6837cec265c5a37898c1585bbb60a52130ca101f58f6f9a91d6c2ce98405029e