[INFO] cloning repository https://github.com/kevinclancy/MaMaRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kevinclancy/MaMaRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinclancy%2FMaMaRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinclancy%2FMaMaRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cbe0eb435974e531dc6f1cd8b4651bfa430aa18d
[INFO] checking kevinclancy/MaMaRust 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%2Fkevinclancy%2FMaMaRust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kevinclancy/MaMaRust
[INFO] finished tweaking git repo https://github.com/kevinclancy/MaMaRust
[INFO] tweaked toml for git repo https://github.com/kevinclancy/MaMaRust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kevinclancy/MaMaRust 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/kevinclancy/MaMaRust 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f1ba1309e6d0bc79f6cdacf5c6e61bda3eefee7cdd66b284f71a7e260aeb6ab6
[INFO] running `Command { std: "docker" "start" "-a" "f1ba1309e6d0bc79f6cdacf5c6e61bda3eefee7cdd66b284f71a7e260aeb6ab6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1ba1309e6d0bc79f6cdacf5c6e61bda3eefee7cdd66b284f71a7e260aeb6ab6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1ba1309e6d0bc79f6cdacf5c6e61bda3eefee7cdd66b284f71a7e260aeb6ab6", kill_on_drop: false }`
[INFO] [stdout] f1ba1309e6d0bc79f6cdacf5c6e61bda3eefee7cdd66b284f71a7e260aeb6ab6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] c925623b8ed74e49f69db1cfd6afac3e529f7d65a8ad197c0484bef118f728cb
[INFO] running `Command { std: "docker" "start" "-a" "c925623b8ed74e49f69db1cfd6afac3e529f7d65a8ad197c0484bef118f728cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling find-msvc-tools v0.1.0
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]    Compiling im v15.1.0
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling cc v1.2.35
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking sized-chunks v0.6.5
[INFO] [stderr]    Compiling psm v0.1.26
[INFO] [stderr]    Compiling stacker v0.1.21
[INFO] [stderr]     Checking chumsky v0.9.3
[INFO] [stderr]     Checking mama_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `slice`
[INFO] [stdout]  --> src/heap.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{mem::swap, slice};
[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: `virtual_machine::VirtualMachine`
[INFO] [stdout]  --> src/heap.rs:3:40
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{virtual_machine::CodeAddr, virtual_machine::VirtualMachine};
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Heap`
[INFO] [stdout]  --> src/virtual_machine.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::heap::{Heap, HeapAddr};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `add`, `get_basic`, `sub`, and `symbolic_addr`
[INFO] [stdout]  --> src/gen_code.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{code_builder::{add, get_basic, load_c, mk_basic, sub, symbolic_addr}, syntax::{Expr, Range, Ty}};
[INFO] [stdout]   |                            ^^^  ^^^^^^^^^                    ^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `slice`
[INFO] [stdout]  --> src/heap.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{mem::swap, slice};
[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: `virtual_machine::VirtualMachine`
[INFO] [stdout]  --> src/heap.rs:3:40
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{virtual_machine::CodeAddr, virtual_machine::VirtualMachine};
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Heap`
[INFO] [stdout]  --> src/virtual_machine.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::heap::{Heap, HeapAddr};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `add`, `get_basic`, `sub`, and `symbolic_addr`
[INFO] [stdout]  --> src/gen_code.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{code_builder::{add, get_basic, load_c, mk_basic, sub, symbolic_addr}, syntax::{Expr, Range, Ty}};
[INFO] [stdout]   |                            ^^^  ^^^^^^^^^                    ^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctxt`
[INFO] [stdout]    --> src/gen_code.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     ctxt: &Context,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_ctxt`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr_gen`
[INFO] [stdout]    --> src/gen_code.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     addr_gen: &mut AddressGenerator,
[INFO] [stdout]     |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_addr_gen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/gen_code.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |     expr: &Expr,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack_level`
[INFO] [stdout]    --> src/gen_code.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     stack_level: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack_level`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/heap.rs:312:22
[INFO] [stdout]     |
[INFO] [stdout] 312 |       self.write_u32(elem.try_into().unwrap());
[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<u32, Infallible>
[INFO] [stdout]    --> src/heap.rs:328:20
[INFO] [stdout]     |
[INFO] [stdout] 328 |     self.write_u32(elems_addr.try_into().unwrap());
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mama_rust` (lib) due to 8 previous errors; 8 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/heap.rs:344:20
[INFO] [stdout]     |
[INFO] [stdout] 344 |     self.write_u32(arg_vec.try_into().unwrap());
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/heap.rs:345:20
[INFO] [stdout]     |
[INFO] [stdout] 345 |     self.write_u32(global_vec.try_into().unwrap());
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/heap.rs:396:20
[INFO] [stdout]     |
[INFO] [stdout] 396 |     self.write_u32(n.try_into().unwrap());
[INFO] [stdout]     |                    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/heap.rs:412:20
[INFO] [stdout]     |
[INFO] [stdout] 412 |     self.write_u32(arg_vec.try_into().unwrap());
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]   --> src/exec.rs:31:23
[INFO] [stdout]    |
[INFO] [stdout] 31 |   vm.ss[vm.ssp + 1] = vm.gp.try_into().unwrap();
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/exec.rs:241:35
[INFO] [stdout]     |
[INFO] [stdout] 241 |             let mut vec = vec![0; n.try_into().unwrap()];
[INFO] [stdout]     |                                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/heap.rs:434:11
[INFO] [stdout]     |
[INFO] [stdout] 434 |       let mut basic_addr = heap.new_basic(3, [].iter_mut());
[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: unused variable: `ctxt`
[INFO] [stdout]    --> src/gen_code.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     ctxt: &Context,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_ctxt`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr_gen`
[INFO] [stdout]    --> src/gen_code.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     addr_gen: &mut AddressGenerator,
[INFO] [stdout]     |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_addr_gen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/gen_code.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |     expr: &Expr,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack_level`
[INFO] [stdout]    --> src/gen_code.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     stack_level: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack_level`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/heap.rs:312:22
[INFO] [stdout]     |
[INFO] [stdout] 312 |       self.write_u32(elem.try_into().unwrap());
[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<u32, Infallible>
[INFO] [stdout]    --> src/heap.rs:328:20
[INFO] [stdout]     |
[INFO] [stdout] 328 |     self.write_u32(elems_addr.try_into().unwrap());
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/heap.rs:344:20
[INFO] [stdout]     |
[INFO] [stdout] 344 |     self.write_u32(arg_vec.try_into().unwrap());
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/heap.rs:345:20
[INFO] [stdout]     |
[INFO] [stdout] 345 |     self.write_u32(global_vec.try_into().unwrap());
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/heap.rs:396:20
[INFO] [stdout]     |
[INFO] [stdout] 396 |     self.write_u32(n.try_into().unwrap());
[INFO] [stdout]     |                    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/heap.rs:412:20
[INFO] [stdout]     |
[INFO] [stdout] 412 |     self.write_u32(arg_vec.try_into().unwrap());
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]   --> src/exec.rs:31:23
[INFO] [stdout]    |
[INFO] [stdout] 31 |   vm.ss[vm.ssp + 1] = vm.gp.try_into().unwrap();
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/exec.rs:241:35
[INFO] [stdout]     |
[INFO] [stdout] 241 |             let mut vec = vec![0; n.try_into().unwrap()];
[INFO] [stdout]     |                                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mama_rust` (lib test) due to 8 previous errors; 9 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c925623b8ed74e49f69db1cfd6afac3e529f7d65a8ad197c0484bef118f728cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c925623b8ed74e49f69db1cfd6afac3e529f7d65a8ad197c0484bef118f728cb", kill_on_drop: false }`
[INFO] [stdout] c925623b8ed74e49f69db1cfd6afac3e529f7d65a8ad197c0484bef118f728cb
