[INFO] cloning repository https://github.com/WithStomach/course-lab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WithStomach/course-lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWithStomach%2Fcourse-lab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWithStomach%2Fcourse-lab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c49cfda209079ae4d4d67c936dec98c6425a8d41
[INFO] checking WithStomach/course-lab against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWithStomach%2Fcourse-lab" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/WithStomach/course-lab
[INFO] finished tweaking git repo https://github.com/WithStomach/course-lab
[INFO] tweaked toml for git repo https://github.com/WithStomach/course-lab written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/WithStomach/course-lab on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/WithStomach/course-lab 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded key-node-list v0.0.5
[INFO] [stderr]   Downloaded koopa v0.0.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ea66b31aa7125aa32c896924b9777c17c45324d2444e75dcecfe874bdc9cae3
[INFO] running `Command { std: "docker" "start" "-a" "8ea66b31aa7125aa32c896924b9777c17c45324d2444e75dcecfe874bdc9cae3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ea66b31aa7125aa32c896924b9777c17c45324d2444e75dcecfe874bdc9cae3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ea66b31aa7125aa32c896924b9777c17c45324d2444e75dcecfe874bdc9cae3", kill_on_drop: false }`
[INFO] [stdout] 8ea66b31aa7125aa32c896924b9777c17c45324d2444e75dcecfe874bdc9cae3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42372c0f2093f20db54a7eca440faf1817bfa8a2b040150db10e2f35b1b39d70
[INFO] running `Command { std: "docker" "start" "-a" "42372c0f2093f20db54a7eca440faf1817bfa8a2b040150db10e2f35b1b39d70", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling either v1.10.0
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling ena v0.14.2
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling pico-args v0.5.0
[INFO] [stderr]     Checking key-node-list v0.0.5
[INFO] [stderr]     Checking koopa v0.0.7
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling string_cache v0.8.7
[INFO] [stderr]    Compiling ascii-canvas v3.0.0
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking lalrpop-util v0.20.2
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling lalrpop v0.20.2
[INFO] [stderr]    Compiling course-lab v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/ir_gen/show.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/ir_gen/show.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 138 |             GlobalItem::Func(func_def) => {
[INFO] [stdout]     |             -------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 156 |             GlobalItem::Decl(decl) => {
[INFO] [stdout]     |             ---------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 159 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ptr_flags` is never read
[INFO] [stdout]    --> src/ir_gen/show.rs:140:48
[INFO] [stdout]     |
[INFO] [stdout] 140 |                 let mut ptr_flags: Vec<bool> = Vec::new();
[INFO] [stdout]     |                                                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/ir_gen/show.rs:203:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/ir_gen/show.rs:203:13
[INFO] [stdout]     |
[INFO] [stdout] 199 |             ItemType::Int => {
[INFO] [stdout]     |             ------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 202 |             ItemType::Void => {}
[INFO] [stdout]     |             -------------- matches some of the same values
[INFO] [stdout] 203 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ir_gen/show.rs:294:25
[INFO] [stdout]     |
[INFO] [stdout] 294 |                     let mut var = Variable::Ptr((format!("%{0}", param.id), ItemType::Int));
[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: value assigned to `ptr_flags` is never read
[INFO] [stdout]    --> src/ir_gen/show.rs:313:40
[INFO] [stdout]     |
[INFO] [stdout] 313 |         let mut ptr_flags: Vec<bool> = Vec::new();
[INFO] [stdout]     |                                        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ds` is never read
[INFO] [stdout]    --> src/ir_gen/show.rs:355:22
[INFO] [stdout]     |
[INFO] [stdout] 355 |         let mut ds = "".to_string();
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]     --> src/ir_gen/show.rs:1058:13
[INFO] [stdout]      |
[INFO] [stdout] 1058 |             _ => unreachable!(),
[INFO] [stdout]      |             ^ no value can reach this
[INFO] [stdout]      |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]     --> src/ir_gen/show.rs:1058:13
[INFO] [stdout]      |
[INFO] [stdout]  848 |             Stmt::Return(exp) => {
[INFO] [stdout]      |             ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout]  874 |             Stmt::Assign((lval, exp)) => {
[INFO] [stdout]      |             ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1007 |             Stmt::Block(block) => {
[INFO] [stdout]      |             ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1017 |             Stmt::Exp(exp) => {
[INFO] [stdout]      |             -------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1058 |             _ => unreachable!(),
[INFO] [stdout]      |             ^ ...and 4 other patterns collectively make this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]     --> src/ir_gen/show.rs:1162:13
[INFO] [stdout]      |
[INFO] [stdout] 1162 |             _ => unreachable!(),
[INFO] [stdout]      |             ^ no value can reach this
[INFO] [stdout]      |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]     --> src/ir_gen/show.rs:1162:13
[INFO] [stdout]      |
[INFO] [stdout] 1077 |             UnaryExp::PrimaryExp(pri_exp) => {
[INFO] [stdout]      |             ----------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1082 |             UnaryExp::UnaryExp((unary_op, sub_exp)) => {
[INFO] [stdout]      |             --------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1125 |             UnaryExp::FuncItem((id, func_r_params)) => {
[INFO] [stdout]      |             --------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1162 |             _ => unreachable!(),
[INFO] [stdout]      |             ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]     --> src/ir_gen/show.rs:1153:33
[INFO] [stdout]      |
[INFO] [stdout] 1153 | ...                   _ => unreachable!(),
[INFO] [stdout]      |                       ^ no value can reach this
[INFO] [stdout]      |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]     --> src/ir_gen/show.rs:1153:33
[INFO] [stdout]      |
[INFO] [stdout] 1145 | ...                   ItemType::Int => {
[INFO] [stdout]      |                       ------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1150 | ...                   ItemType::Void => {
[INFO] [stdout]      |                       -------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1153 | ...                   _ => unreachable!(),
[INFO] [stdout]      |                       ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/ir_gen/show.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/ir_gen/show.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 138 |             GlobalItem::Func(func_def) => {
[INFO] [stdout]     |             -------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 156 |             GlobalItem::Decl(decl) => {
[INFO] [stdout]     |             ---------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 159 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ptr_flags` is never read
[INFO] [stdout]    --> src/ir_gen/show.rs:140:48
[INFO] [stdout]     |
[INFO] [stdout] 140 |                 let mut ptr_flags: Vec<bool> = Vec::new();
[INFO] [stdout]     |                                                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/ir_gen/show.rs:203:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/ir_gen/show.rs:203:13
[INFO] [stdout]     |
[INFO] [stdout] 199 |             ItemType::Int => {
[INFO] [stdout]     |             ------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 202 |             ItemType::Void => {}
[INFO] [stdout]     |             -------------- matches some of the same values
[INFO] [stdout] 203 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ir_gen/show.rs:294:25
[INFO] [stdout]     |
[INFO] [stdout] 294 |                     let mut var = Variable::Ptr((format!("%{0}", param.id), ItemType::Int));
[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: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1171:23
[INFO] [stdout]      |
[INFO] [stdout] 1171 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ptr_flags` is never read
[INFO] [stdout]    --> src/ir_gen/show.rs:313:40
[INFO] [stdout]     |
[INFO] [stdout] 313 |         let mut ptr_flags: Vec<bool> = Vec::new();
[INFO] [stdout]     |                                        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1384:23
[INFO] [stdout]      |
[INFO] [stdout] 1384 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ds` is never read
[INFO] [stdout]    --> src/ir_gen/show.rs:355:22
[INFO] [stdout]     |
[INFO] [stdout] 355 |         let mut ds = "".to_string();
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1442:23
[INFO] [stdout]      |
[INFO] [stdout] 1442 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1505:23
[INFO] [stdout]      |
[INFO] [stdout] 1505 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `op1` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1523:31
[INFO] [stdout]      |
[INFO] [stdout] 1523 |                 let mut op1 = "".to_string();
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `op2` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1539:31
[INFO] [stdout]      |
[INFO] [stdout] 1539 |                 let mut op2 = "".to_string();
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1572:23
[INFO] [stdout]      |
[INFO] [stdout] 1572 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `op1` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1590:31
[INFO] [stdout]      |
[INFO] [stdout] 1590 |                 let mut op1 = "".to_string();
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `op2` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1606:31
[INFO] [stdout]      |
[INFO] [stdout] 1606 |                 let mut op2 = "".to_string();
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1646:23
[INFO] [stdout]      |
[INFO] [stdout] 1646 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1701:23
[INFO] [stdout]      |
[INFO] [stdout] 1701 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]     --> src/ir_gen/show.rs:1058:13
[INFO] [stdout]      |
[INFO] [stdout] 1058 |             _ => unreachable!(),
[INFO] [stdout]      |             ^ no value can reach this
[INFO] [stdout]      |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]     --> src/ir_gen/show.rs:1058:13
[INFO] [stdout]      |
[INFO] [stdout]  848 |             Stmt::Return(exp) => {
[INFO] [stdout]      |             ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout]  874 |             Stmt::Assign((lval, exp)) => {
[INFO] [stdout]      |             ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1007 |             Stmt::Block(block) => {
[INFO] [stdout]      |             ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1017 |             Stmt::Exp(exp) => {
[INFO] [stdout]      |             -------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1058 |             _ => unreachable!(),
[INFO] [stdout]      |             ^ ...and 4 other patterns collectively make this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]     --> src/ir_gen/show.rs:1162:13
[INFO] [stdout]      |
[INFO] [stdout] 1162 |             _ => unreachable!(),
[INFO] [stdout]      |             ^ no value can reach this
[INFO] [stdout]      |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]     --> src/ir_gen/show.rs:1162:13
[INFO] [stdout]      |
[INFO] [stdout] 1077 |             UnaryExp::PrimaryExp(pri_exp) => {
[INFO] [stdout]      |             ----------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1082 |             UnaryExp::UnaryExp((unary_op, sub_exp)) => {
[INFO] [stdout]      |             --------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1125 |             UnaryExp::FuncItem((id, func_r_params)) => {
[INFO] [stdout]      |             --------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1162 |             _ => unreachable!(),
[INFO] [stdout]      |             ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]     --> src/ir_gen/show.rs:1153:33
[INFO] [stdout]      |
[INFO] [stdout] 1153 | ...                   _ => unreachable!(),
[INFO] [stdout]      |                       ^ no value can reach this
[INFO] [stdout]      |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]     --> src/ir_gen/show.rs:1153:33
[INFO] [stdout]      |
[INFO] [stdout] 1145 | ...                   ItemType::Int => {
[INFO] [stdout]      |                       ------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1150 | ...                   ItemType::Void => {
[INFO] [stdout]      |                       -------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1153 | ...                   _ => unreachable!(),
[INFO] [stdout]      |                       ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1171:23
[INFO] [stdout]      |
[INFO] [stdout] 1171 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res_reg` is never read
[INFO] [stdout]    --> src/koopa2asm.rs:183:35
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 let mut res_reg = -1;
[INFO] [stdout]     |                                   ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1384:23
[INFO] [stdout]      |
[INFO] [stdout] 1384 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1442:23
[INFO] [stdout]      |
[INFO] [stdout] 1442 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1505:23
[INFO] [stdout]      |
[INFO] [stdout] 1505 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `op1` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1523:31
[INFO] [stdout]      |
[INFO] [stdout] 1523 |                 let mut op1 = "".to_string();
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `op2` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1539:31
[INFO] [stdout]      |
[INFO] [stdout] 1539 |                 let mut op2 = "".to_string();
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1572:23
[INFO] [stdout]      |
[INFO] [stdout] 1572 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `op1` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1590:31
[INFO] [stdout]      |
[INFO] [stdout] 1590 |                 let mut op1 = "".to_string();
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `op2` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1606:31
[INFO] [stdout]      |
[INFO] [stdout] 1606 |                 let mut op2 = "".to_string();
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1646:23
[INFO] [stdout]      |
[INFO] [stdout] 1646 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]     --> src/ir_gen/show.rs:1701:23
[INFO] [stdout]      |
[INFO] [stdout] 1701 |         let mut res = Res::Nothing;
[INFO] [stdout]      |                       ^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res_reg` is never read
[INFO] [stdout]    --> src/koopa2asm.rs:183:35
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 let mut res_reg = -1;
[INFO] [stdout]     |                                   ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.48s
[INFO] running `Command { std: "docker" "inspect" "42372c0f2093f20db54a7eca440faf1817bfa8a2b040150db10e2f35b1b39d70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42372c0f2093f20db54a7eca440faf1817bfa8a2b040150db10e2f35b1b39d70", kill_on_drop: false }`
[INFO] [stdout] 42372c0f2093f20db54a7eca440faf1817bfa8a2b040150db10e2f35b1b39d70
