[INFO] cloning repository https://github.com/atkurtul/slcc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/atkurtul/slcc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatkurtul%2Fslcc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatkurtul%2Fslcc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 19560c19321df74f2a6c7e728dbd89094d4650e5
[INFO] checking atkurtul/slcc against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatkurtul%2Fslcc" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/atkurtul/slcc
[INFO] finished tweaking git repo https://github.com/atkurtul/slcc
[INFO] tweaked toml for git repo https://github.com/atkurtul/slcc written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/atkurtul/slcc on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/atkurtul/slcc 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3451fff4005eb034af90d247678a4a7f318fa4f1afd1f8e40a9eb7652874e8b4
[INFO] running `Command { std: "docker" "start" "-a" "3451fff4005eb034af90d247678a4a7f318fa4f1afd1f8e40a9eb7652874e8b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3451fff4005eb034af90d247678a4a7f318fa4f1afd1f8e40a9eb7652874e8b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3451fff4005eb034af90d247678a4a7f318fa4f1afd1f8e40a9eb7652874e8b4", kill_on_drop: false }`
[INFO] [stdout] 3451fff4005eb034af90d247678a4a7f318fa4f1afd1f8e40a9eb7652874e8b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05624065ae0c354a470297e33940c20cd66e293f33a7709a3f7b2a3f32ab345b
[INFO] running `Command { std: "docker" "start" "-a" "05624065ae0c354a470297e33940c20cd66e293f33a7709a3f7b2a3f32ab345b", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling parking_lot_core v0.9.2
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling parking_lot v0.12.0
[INFO] [stderr]    Compiling ascii-canvas v3.0.0
[INFO] [stderr]    Compiling string_cache v0.8.4
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking lalrpop-util v0.19.7
[INFO] [stderr]    Compiling lalrpop v0.19.7
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]     Checking clap v3.1.8
[INFO] [stderr]    Compiling compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: private item shadows public glob re-export
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the name `HashMap` in the type namespace is supposed to be publicly re-exported here
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use expr::*;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] note: but the private item here shadows it
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(hidden_glob_reexports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private item shadows public glob re-export
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the name `HashMap` in the type namespace is supposed to be publicly re-exported here
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use expr::*;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] note: but the private item here shadows it
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(hidden_glob_reexports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `arbitrary_enum_discriminant` has been stable since 1.66.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(arbitrary_enum_discriminant, box_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `arbitrary_enum_discriminant` has been stable since 1.66.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(arbitrary_enum_discriminant, box_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]    --> src/expr.rs:306:5
[INFO] [stdout]     |
[INFO] [stdout] 305 | pub struct Symbol<'a> {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 306 |     name: &'a str,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_base_mby_ptr` is never used
[INFO] [stdout]    --> src/expr.rs:346:8
[INFO] [stdout]     |
[INFO] [stdout] 339 | impl<'a> Type<'a> {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 346 |     fn get_base_mby_ptr(&self) -> BaseType {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `label` is never used
[INFO] [stdout]    --> src/expr.rs:424:8
[INFO] [stdout]     |
[INFO] [stdout] 417 | impl LabelStack {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 424 |     fn label(&mut self, id: ResultID) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]    --> src/expr.rs:440:5
[INFO] [stdout]     |
[INFO] [stdout] 437 | pub struct Function<'a> {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 440 |     name: &'a str,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     /// Name of the person to greet
[INFO] [stdout] 29 | |     #[clap(short, long)]
[INFO] [stdout] 30 | |     file: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | /     /// Number of times to greet
[INFO] [stdout] 33 | |     #[clap(short, long)]
[INFO] [stdout] 34 | |     output: String,
[INFO] [stdout]    | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]    --> src/expr.rs:306:5
[INFO] [stdout]     |
[INFO] [stdout] 305 | pub struct Symbol<'a> {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 306 |     name: &'a str,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_base_mby_ptr` is never used
[INFO] [stdout]    --> src/expr.rs:346:8
[INFO] [stdout]     |
[INFO] [stdout] 339 | impl<'a> Type<'a> {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 346 |     fn get_base_mby_ptr(&self) -> BaseType {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `label` is never used
[INFO] [stdout]    --> src/expr.rs:424:8
[INFO] [stdout]     |
[INFO] [stdout] 417 | impl LabelStack {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 424 |     fn label(&mut self, id: ResultID) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]    --> src/expr.rs:440:5
[INFO] [stdout]     |
[INFO] [stdout] 437 | pub struct Function<'a> {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 440 |     name: &'a str,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     /// Name of the person to greet
[INFO] [stdout] 29 | |     #[clap(short, long)]
[INFO] [stdout] 30 | |     file: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | /     /// Number of times to greet
[INFO] [stdout] 33 | |     #[clap(short, long)]
[INFO] [stdout] 34 | |     output: String,
[INFO] [stdout]    | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compiler` (bin "compiler") due to 2 previous errors; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `compiler` (bin "compiler" test) due to 2 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "05624065ae0c354a470297e33940c20cd66e293f33a7709a3f7b2a3f32ab345b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05624065ae0c354a470297e33940c20cd66e293f33a7709a3f7b2a3f32ab345b", kill_on_drop: false }`
[INFO] [stdout] 05624065ae0c354a470297e33940c20cd66e293f33a7709a3f7b2a3f32ab345b