[INFO] cloning repository https://github.com/felicityin/kira
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/felicityin/kira" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelicityin%2Fkira", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelicityin%2Fkira'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] db7d79c85bcebc58940beb646f3a28b7d2f692ea
[INFO] checking felicityin/kira 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%2Ffelicityin%2Fkira" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/felicityin/kira
[INFO] finished tweaking git repo https://github.com/felicityin/kira
[INFO] tweaked toml for git repo https://github.com/felicityin/kira written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/felicityin/kira 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/felicityin/kira 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 43af2c47881ebb8b7adaf7cee63b86574dfc4629a3763a48d2558a300ad8976f
[INFO] running `Command { std: "docker" "start" "-a" "43af2c47881ebb8b7adaf7cee63b86574dfc4629a3763a48d2558a300ad8976f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43af2c47881ebb8b7adaf7cee63b86574dfc4629a3763a48d2558a300ad8976f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43af2c47881ebb8b7adaf7cee63b86574dfc4629a3763a48d2558a300ad8976f", kill_on_drop: false }`
[INFO] [stdout] 43af2c47881ebb8b7adaf7cee63b86574dfc4629a3763a48d2558a300ad8976f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f6c01a2d92697d2760b040d2b442dfd9b79f1c1a3505559870e265912acdde2d
[INFO] running `Command { std: "docker" "start" "-a" "f6c01a2d92697d2760b040d2b442dfd9b79f1c1a3505559870e265912acdde2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling ena v0.14.1
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling lalrpop-util v0.19.8
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]     Checking key-node-list v0.0.5
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling ascii-canvas v3.0.0
[INFO] [stderr]     Checking koopa v0.0.6
[INFO] [stderr]    Compiling string_cache v0.8.7
[INFO] [stderr]    Compiling lalrpop v0.19.8
[INFO] [stderr]    Compiling kira v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Program, ir::Error>
[INFO] [stdout]   --> src/main.rs:41:22
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let program_ir = ir::generate_program(&program_ast).map_err(Error::Generate)?;
[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: std::result::Result<Program, ir::Error>
[INFO] [stdout]   --> src/ir/mod.rs:16:66
[INFO] [stdout]    |
[INFO] [stdout] 16 |   pub fn generate_program(comp_unit: &CompUnit) -> Result<Program> {
[INFO] [stdout]    |  __________________________________________________________________^
[INFO] [stdout] 17 | |     let mut program = Program::new();
[INFO] [stdout] 18 | |     comp_unit.generate(&mut program, &mut Scopes::new())?;
[INFO] [stdout] 19 | |     Ok(program)
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Program, ir::Error>
[INFO] [stdout]   --> src/ir/mod.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     comp_unit.generate(&mut program, &mut Scopes::new())?;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Program, ir::Error>
[INFO] [stdout]   --> src/ir/mod.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Ok(program)
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<std::result::Result<Infallible, ir::Error>, Type>
[INFO] [stdout]   --> src/ir/gen.rs:32:22
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let ret_ty = self.func_type.generate(program, scopes)?;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Type, ir::Error>
[INFO] [stdout]   --> src/ir/gen.rs:32:22
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let ret_ty = self.func_type.generate(program, scopes)?;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Type, ir::Error>
[INFO] [stdout]   --> src/ir/gen.rs:74:89
[INFO] [stdout]    |
[INFO] [stdout] 74 |       fn generate(&'ast self, _: &mut Program, _scopes: &mut Scopes) -> Result<Self::Out> {
[INFO] [stdout]    |  _________________________________________________________________________________________^
[INFO] [stdout] 75 | |         Ok(match self {
[INFO] [stdout] 76 | |             Self::Int => Type::get_i32(),
[INFO] [stdout] 77 | |         })
[INFO] [stdout] 78 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Type, ir::Error>
[INFO] [stdout]   --> src/ir/gen.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 | /         Ok(match self {
[INFO] [stdout] 76 | |             Self::Int => Type::get_i32(),
[INFO] [stdout] 77 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kira` (bin "kira") due to 8 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Program, ir::Error>
[INFO] [stdout]   --> src/main.rs:41:22
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let program_ir = ir::generate_program(&program_ast).map_err(Error::Generate)?;
[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: std::result::Result<Program, ir::Error>
[INFO] [stdout]   --> src/ir/mod.rs:16:66
[INFO] [stdout]    |
[INFO] [stdout] 16 |   pub fn generate_program(comp_unit: &CompUnit) -> Result<Program> {
[INFO] [stdout]    |  __________________________________________________________________^
[INFO] [stdout] 17 | |     let mut program = Program::new();
[INFO] [stdout] 18 | |     comp_unit.generate(&mut program, &mut Scopes::new())?;
[INFO] [stdout] 19 | |     Ok(program)
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Program, ir::Error>
[INFO] [stdout]   --> src/ir/mod.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     comp_unit.generate(&mut program, &mut Scopes::new())?;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Program, ir::Error>
[INFO] [stdout]   --> src/ir/mod.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Ok(program)
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<std::result::Result<Infallible, ir::Error>, Type>
[INFO] [stdout]   --> src/ir/gen.rs:32:22
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let ret_ty = self.func_type.generate(program, scopes)?;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Type, ir::Error>
[INFO] [stdout]   --> src/ir/gen.rs:32:22
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let ret_ty = self.func_type.generate(program, scopes)?;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Type, ir::Error>
[INFO] [stdout]   --> src/ir/gen.rs:74:89
[INFO] [stdout]    |
[INFO] [stdout] 74 |       fn generate(&'ast self, _: &mut Program, _scopes: &mut Scopes) -> Result<Self::Out> {
[INFO] [stdout]    |  _________________________________________________________________________________________^
[INFO] [stdout] 75 | |         Ok(match self {
[INFO] [stdout] 76 | |             Self::Int => Type::get_i32(),
[INFO] [stdout] 77 | |         })
[INFO] [stdout] 78 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Type, ir::Error>
[INFO] [stdout]   --> src/ir/gen.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 | /         Ok(match self {
[INFO] [stdout] 76 | |             Self::Int => Type::get_i32(),
[INFO] [stdout] 77 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kira` (bin "kira" test) due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "f6c01a2d92697d2760b040d2b442dfd9b79f1c1a3505559870e265912acdde2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6c01a2d92697d2760b040d2b442dfd9b79f1c1a3505559870e265912acdde2d", kill_on_drop: false }`
[INFO] [stdout] f6c01a2d92697d2760b040d2b442dfd9b79f1c1a3505559870e265912acdde2d