[INFO] cloning repository https://github.com/grandmasponge/UselessSets
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/grandmasponge/UselessSets" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrandmasponge%2FUselessSets", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrandmasponge%2FUselessSets'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8c6ff9699fa9d2005bb67f874d4baf063a26ae69
[INFO] checking grandmasponge/UselessSets against try#94e848735e78b58442e0b82e9c60f8f430840389 for pr-149218
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrandmasponge%2FUselessSets" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/grandmasponge/UselessSets
[INFO] finished tweaking git repo https://github.com/grandmasponge/UselessSets
[INFO] tweaked toml for git repo https://github.com/grandmasponge/UselessSets written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/grandmasponge/UselessSets on toolchain 94e848735e78b58442e0b82e9c60f8f430840389
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94e848735e78b58442e0b82e9c60f8f430840389" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/grandmasponge/UselessSets 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" "+94e848735e78b58442e0b82e9c60f8f430840389" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+94e848735e78b58442e0b82e9c60f8f430840389" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] faf8b00d8a23ca053a74e0b6b0b721c719bad1c511de12435a1f8385b8bab828
[INFO] running `Command { std: "docker" "start" "-a" "faf8b00d8a23ca053a74e0b6b0b721c719bad1c511de12435a1f8385b8bab828", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "faf8b00d8a23ca053a74e0b6b0b721c719bad1c511de12435a1f8385b8bab828", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faf8b00d8a23ca053a74e0b6b0b721c719bad1c511de12435a1f8385b8bab828", kill_on_drop: false }`
[INFO] [stdout] faf8b00d8a23ca053a74e0b6b0b721c719bad1c511de12435a1f8385b8bab828
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+94e848735e78b58442e0b82e9c60f8f430840389" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fe1d83597bf4a80dbe5a285cd691c275f0eae912a47873add80163359e2cba1
[INFO] running `Command { std: "docker" "start" "-a" "6fe1d83597bf4a80dbe5a285cd691c275f0eae912a47873add80163359e2cba1", kill_on_drop: false }`
[INFO] [stderr]     Checking sets v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `SetDataTypes`
[INFO] [stdout]  --> src/main.rs:2:33
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::elements::{Elements, SetDataTypes};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SetDataTypes`
[INFO] [stdout]  --> src/main.rs:2:33
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::elements::{Elements, SetDataTypes};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut s2 = sets::Set::SetfromHashSet(se2);
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `None` is never constructed
[INFO] [stdout]  --> src/error.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum SetErrorType {
[INFO] [stdout]   |          ------------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 5 |     None,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SetErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `error_type` and `msg` are never read
[INFO] [stdout]   --> src/error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct SetError {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 10 |     error_type: SetErrorType,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 11 |     msg: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SetError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `SetfromHashSet` should have a snake case name
[INFO] [stdout]   --> src/sets.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn SetfromHashSet(elements: HashSet<Elements>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `setfrom_hash_set`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut s2 = sets::Set::SetfromHashSet(se2);
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `None` is never constructed
[INFO] [stdout]  --> src/error.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum SetErrorType {
[INFO] [stdout]   |          ------------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 5 |     None,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SetErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `error_type` and `msg` are never read
[INFO] [stdout]   --> src/error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct SetError {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 10 |     error_type: SetErrorType,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 11 |     msg: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SetError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `SetfromHashSet` should have a snake case name
[INFO] [stdout]   --> src/sets.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn SetfromHashSet(elements: HashSet<Elements>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `setfrom_hash_set`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "6fe1d83597bf4a80dbe5a285cd691c275f0eae912a47873add80163359e2cba1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fe1d83597bf4a80dbe5a285cd691c275f0eae912a47873add80163359e2cba1", kill_on_drop: false }`
[INFO] [stdout] 6fe1d83597bf4a80dbe5a285cd691c275f0eae912a47873add80163359e2cba1
