[INFO] cloning repository https://github.com/gustavomedeiross/lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gustavomedeiross/lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgustavomedeiross%2Flang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgustavomedeiross%2Flang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2c228d4311194f10d80ae189f816e33157b9096
[INFO] checking gustavomedeiross/lang against master#5a9e0e87877857f601480d16739b4edd9cb3a426 for pr-117593-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgustavomedeiross%2Flang" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gustavomedeiross/lang on toolchain 5a9e0e87877857f601480d16739b4edd9cb3a426
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5a9e0e87877857f601480d16739b4edd9cb3a426" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/gustavomedeiross/lang
[INFO] finished tweaking git repo https://github.com/gustavomedeiross/lang
[INFO] tweaked toml for git repo https://github.com/gustavomedeiross/lang written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gustavomedeiross/lang 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" "+5a9e0e87877857f601480d16739b4edd9cb3a426" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded logos-codegen v0.13.0
[INFO] [stderr]   Downloaded logos-derive v0.13.0
[INFO] [stderr]   Downloaded logos v0.13.0
[INFO] [stderr]   Downloaded regex-automata v0.3.4
[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" "+5a9e0e87877857f601480d16739b4edd9cb3a426" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd8a70161f08d7c456ab0f68a32d85e7307485a2c356c2168f4e70aaaa70fa22
[INFO] running `Command { std: "docker" "start" "-a" "cd8a70161f08d7c456ab0f68a32d85e7307485a2c356c2168f4e70aaaa70fa22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd8a70161f08d7c456ab0f68a32d85e7307485a2c356c2168f4e70aaaa70fa22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd8a70161f08d7c456ab0f68a32d85e7307485a2c356c2168f4e70aaaa70fa22", kill_on_drop: false }`
[INFO] [stdout] cd8a70161f08d7c456ab0f68a32d85e7307485a2c356c2168f4e70aaaa70fa22
[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" "+5a9e0e87877857f601480d16739b4edd9cb3a426" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 433496e167b19c5e5e6f5971990fe2618ba5108ef7a6218662f3dbdec6b568de
[INFO] running `Command { std: "docker" "start" "-a" "433496e167b19c5e5e6f5971990fe2618ba5108ef7a6218662f3dbdec6b568de", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling rustix v0.38.4
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling smallvec v1.11.0
[INFO] [stderr]    Compiling bitflags v2.3.3
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling linux-raw-sys v0.4.5
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling regex-syntax v0.7.4
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling log v0.4.19
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling is-terminal v0.4.9
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]    Compiling ena v0.14.2
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling petgraph v0.6.3
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling string_cache v0.8.7
[INFO] [stderr]    Compiling regex-automata v0.3.4
[INFO] [stderr]    Compiling ascii-canvas v3.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling lalrpop-util v0.20.0
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling regex v1.9.1
[INFO] [stderr]    Compiling lalrpop v0.20.0
[INFO] [stderr]    Compiling logos-codegen v0.13.0
[INFO] [stderr]    Compiling logos-derive v0.13.0
[INFO] [stderr]     Checking logos v0.13.0
[INFO] [stderr]    Compiling lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `thread::panicking`
[INFO] [stdout]  --> src/types.rs:2:38
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{collections::HashSet, fmt, thread::panicking};
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread::panicking`
[INFO] [stdout]  --> src/types.rs:2:38
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{collections::HashSet, fmt, thread::panicking};
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/typer/mod.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn from(value: SubstMergeError) -> Self {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `preds`
[INFO] [stdout]    --> src/typer/mod.rs:324:24
[INFO] [stdout]     |
[INFO] [stdout] 324 |     fn simplify(&self, preds: Vec<Pred>) -> Vec<Pred> {
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_preds`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_typeclass` and `add_instance` are never used
[INFO] [stdout]   --> src/typer/env.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl TypeClassEnv {
[INFO] [stdout]    | ----------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub fn add_typeclass(&mut self, definition: Qual<Pred>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn add_instance(&mut self, definition: Qual<Pred>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/types.rs:377:12
[INFO] [stdout]     |
[INFO] [stdout] 376 | impl Scheme {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] 377 |     pub fn new(tyvars: Vec<TyVar>, qual_type: QualType) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add_instance` are never used
[INFO] [stdout]    --> src/types.rs:408:12
[INFO] [stdout]     |
[INFO] [stdout] 407 | impl TypeClass {
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] 408 |     pub fn new(definition: QualPred) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 415 |     pub fn add_instance(&mut self, instance: TypeClassInstance) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/types.rs:428:12
[INFO] [stdout]     |
[INFO] [stdout] 427 | impl TypeClassInstance {
[INFO] [stdout]     | ---------------------- associated function in this implementation
[INFO] [stdout] 428 |     pub fn new(definition: QualPred) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/typer/mod.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn from(value: SubstMergeError) -> Self {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `preds`
[INFO] [stdout]    --> src/typer/mod.rs:324:24
[INFO] [stdout]     |
[INFO] [stdout] 324 |     fn simplify(&self, preds: Vec<Pred>) -> Vec<Pred> {
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_preds`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.63s
[INFO] running `Command { std: "docker" "inspect" "433496e167b19c5e5e6f5971990fe2618ba5108ef7a6218662f3dbdec6b568de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "433496e167b19c5e5e6f5971990fe2618ba5108ef7a6218662f3dbdec6b568de", kill_on_drop: false }`
[INFO] [stdout] 433496e167b19c5e5e6f5971990fe2618ba5108ef7a6218662f3dbdec6b568de