[INFO] cloning repository https://github.com/0x59616e/emacc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0x59616e/emacc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x59616e%2Femacc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x59616e%2Femacc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a596610f500d0253c0b434cde8c295fea0a7ad04
[INFO] checking 0x59616e/emacc against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x59616e%2Femacc" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/0x59616e/emacc on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/0x59616e/emacc
[INFO] finished tweaking git repo https://github.com/0x59616e/emacc
[INFO] tweaked toml for git repo https://github.com/0x59616e/emacc written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/0x59616e/emacc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b93c71ebd8c0b66d2815152f5460bc26a84b1f7575d71615f467e9413b5772e
[INFO] running `Command { std: "docker" "start" "-a" "2b93c71ebd8c0b66d2815152f5460bc26a84b1f7575d71615f467e9413b5772e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b93c71ebd8c0b66d2815152f5460bc26a84b1f7575d71615f467e9413b5772e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b93c71ebd8c0b66d2815152f5460bc26a84b1f7575d71615f467e9413b5772e", kill_on_drop: false }`
[INFO] [stdout] 2b93c71ebd8c0b66d2815152f5460bc26a84b1f7575d71615f467e9413b5772e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 258bbeddd30e2ec3e771e8aa722eaf5f35c3fdaefacc9d179dc94bdd35b8550c
[INFO] running `Command { std: "docker" "start" "-a" "258bbeddd30e2ec3e771e8aa722eaf5f35c3fdaefacc9d179dc94bdd35b8550c", kill_on_drop: false }`
[INFO] [stderr]     Checking emacc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ast::Stmt`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use ast::Stmt;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ast::Stmt`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use ast::Stmt;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `kind` is never read
[INFO] [stdout]   --> src/lex.rs:86:11
[INFO] [stdout]    |
[INFO] [stdout] 86 |   let mut kind = TokenKind::Useless;
[INFO] [stdout]    |           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `kind` is never read
[INFO] [stdout]   --> src/lex.rs:86:11
[INFO] [stdout]    |
[INFO] [stdout] 86 |   let mut kind = TokenKind::Useless;
[INFO] [stdout]    |           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]  --> src/basicblock.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   parent: Option<Rc<RefCell<Function>>>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]   --> src/function.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 |   parent: Option<Rc<RefCell<Module>>>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_parent`
[INFO] [stdout]   --> src/function.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 |   pub fn set_parent(&mut self, parent: &Rc<RefCell<Module>>) {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_parent`
[INFO] [stdout]   --> src/function.rs:62:10
[INFO] [stdout]    |
[INFO] [stdout] 62 |   pub fn get_parent(&self) -> Rc<RefCell<Module>> {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_parent`
[INFO] [stdout]    --> src/instruction.rs:153:10
[INFO] [stdout]     |
[INFO] [stdout] 153 |   pub fn get_parent(&self) -> Rc<RefCell<BasicBlock>> {
[INFO] [stdout]     |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Shl`
[INFO] [stdout]    --> src/instruction.rs:343:3
[INFO] [stdout]     |
[INFO] [stdout] 343 |   Shl, // <<
[INFO] [stdout]     |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Shr`
[INFO] [stdout]    --> src/instruction.rs:344:3
[INFO] [stdout]     |
[INFO] [stdout] 344 |   Shr, // >>
[INFO] [stdout]     |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `And`
[INFO] [stdout]    --> src/instruction.rs:345:3
[INFO] [stdout]     |
[INFO] [stdout] 345 |   And, // bitwise &
[INFO] [stdout]     |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Or`
[INFO] [stdout]    --> src/instruction.rs:346:3
[INFO] [stdout]     |
[INFO] [stdout] 346 |   Or,  // bitwise |
[INFO] [stdout]     |   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Xor`
[INFO] [stdout]    --> src/instruction.rs:347:3
[INFO] [stdout]     |
[INFO] [stdout] 347 |   Xor, // bitwise ^
[INFO] [stdout]     |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_const_i1`
[INFO] [stdout]   --> src/irbuilder.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |   pub fn new_const_i1(&self, value: bool) -> Rc<RefCell<Value>> {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Void`
[INFO] [stdout]   --> src/symtab.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   Void,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `I1`
[INFO] [stdout]  --> src/value.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   I1,
[INFO] [stdout]   |   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_const_i1`
[INFO] [stdout]   --> src/value.rs:73:10
[INFO] [stdout]    |
[INFO] [stdout] 73 |   pub fn new_const_i1(value: bool) -> Value {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_dominator_info`
[INFO] [stdout]   --> src/domfrontier.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 |   pub fn get_dominator_info(&self) -> &DominatorInfo {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/symtab.rs:151:11
[INFO] [stdout]     |
[INFO] [stdout] 151 |           write!(f, "{}", item);
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]  --> src/basicblock.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   parent: Option<Rc<RefCell<Function>>>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]   --> src/function.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 |   parent: Option<Rc<RefCell<Module>>>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_parent`
[INFO] [stdout]   --> src/function.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 |   pub fn set_parent(&mut self, parent: &Rc<RefCell<Module>>) {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_parent`
[INFO] [stdout]   --> src/function.rs:62:10
[INFO] [stdout]    |
[INFO] [stdout] 62 |   pub fn get_parent(&self) -> Rc<RefCell<Module>> {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_parent`
[INFO] [stdout]    --> src/instruction.rs:153:10
[INFO] [stdout]     |
[INFO] [stdout] 153 |   pub fn get_parent(&self) -> Rc<RefCell<BasicBlock>> {
[INFO] [stdout]     |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Shl`
[INFO] [stdout]    --> src/instruction.rs:343:3
[INFO] [stdout]     |
[INFO] [stdout] 343 |   Shl, // <<
[INFO] [stdout]     |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Shr`
[INFO] [stdout]    --> src/instruction.rs:344:3
[INFO] [stdout]     |
[INFO] [stdout] 344 |   Shr, // >>
[INFO] [stdout]     |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `And`
[INFO] [stdout]    --> src/instruction.rs:345:3
[INFO] [stdout]     |
[INFO] [stdout] 345 |   And, // bitwise &
[INFO] [stdout]     |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Or`
[INFO] [stdout]    --> src/instruction.rs:346:3
[INFO] [stdout]     |
[INFO] [stdout] 346 |   Or,  // bitwise |
[INFO] [stdout]     |   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Xor`
[INFO] [stdout]    --> src/instruction.rs:347:3
[INFO] [stdout]     |
[INFO] [stdout] 347 |   Xor, // bitwise ^
[INFO] [stdout]     |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_const_i1`
[INFO] [stdout]   --> src/irbuilder.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |   pub fn new_const_i1(&self, value: bool) -> Rc<RefCell<Value>> {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Void`
[INFO] [stdout]   --> src/symtab.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   Void,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `I1`
[INFO] [stdout]  --> src/value.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   I1,
[INFO] [stdout]   |   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_const_i1`
[INFO] [stdout]   --> src/value.rs:73:10
[INFO] [stdout]    |
[INFO] [stdout] 73 |   pub fn new_const_i1(value: bool) -> Value {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_dominator_info`
[INFO] [stdout]   --> src/domfrontier.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 |   pub fn get_dominator_info(&self) -> &DominatorInfo {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/symtab.rs:151:11
[INFO] [stdout]     |
[INFO] [stdout] 151 |           write!(f, "{}", item);
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "258bbeddd30e2ec3e771e8aa722eaf5f35c3fdaefacc9d179dc94bdd35b8550c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "258bbeddd30e2ec3e771e8aa722eaf5f35c3fdaefacc9d179dc94bdd35b8550c", kill_on_drop: false }`
[INFO] [stdout] 258bbeddd30e2ec3e771e8aa722eaf5f35c3fdaefacc9d179dc94bdd35b8550c