[INFO] cloning repository https://github.com/yuchiki/parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuchiki/parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuchiki%2Fparser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuchiki%2Fparser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8974be94736ce4e7a10cf9beed4ac00f77fcc14b
[INFO] checking yuchiki/parser against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuchiki%2Fparser" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yuchiki/parser on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yuchiki/parser
[INFO] finished tweaking git repo https://github.com/yuchiki/parser
[INFO] tweaked toml for git repo https://github.com/yuchiki/parser written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/yuchiki/parser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 054d7af97090b83d71a775a34a1a7a84f664fec4a17eff07767ab748c0f0770e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "054d7af97090b83d71a775a34a1a7a84f664fec4a17eff07767ab748c0f0770e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "054d7af97090b83d71a775a34a1a7a84f664fec4a17eff07767ab748c0f0770e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "054d7af97090b83d71a775a34a1a7a84f664fec4a17eff07767ab748c0f0770e", kill_on_drop: false }`
[INFO] [stdout] 054d7af97090b83d71a775a34a1a7a84f664fec4a17eff07767ab748c0f0770e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f8ae92426cbf0b6b406ba3492783882c0621cb6d8977955b02ad327c44f6ef1d
[INFO] running `Command { std: "docker" "start" "-a" "f8ae92426cbf0b6b406ba3492783882c0621cb6d8977955b02ad327c44f6ef1d", kill_on_drop: false }`
[INFO] [stderr]     Checking parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:166:29
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn lex_number(input: &[u8], mut pos: usize) -> Result<(Token, usize), LexError> {
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:175:30
[INFO] [stdout]     |
[INFO] [stdout] 175 | fn skip_spaces(input: &[u8], mut pos: usize) -> Result<((), usize), LexError> {
[INFO] [stdout]     |                              ----^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnexpectedToken`
[INFO] [stdout]    --> src/main.rs:282:5
[INFO] [stdout]     |
[INFO] [stdout] 282 |     UnexpectedToken(Token),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NotOperator`
[INFO] [stdout]    --> src/main.rs:284:5
[INFO] [stdout]     |
[INFO] [stdout] 284 |     NotOperator(Token),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:166:29
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn lex_number(input: &[u8], mut pos: usize) -> Result<(Token, usize), LexError> {
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:175:30
[INFO] [stdout]     |
[INFO] [stdout] 175 | fn skip_spaces(input: &[u8], mut pos: usize) -> Result<((), usize), LexError> {
[INFO] [stdout]     |                              ----^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `merge`
[INFO] [stdout]   --> src/main.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn merge(&self, other: &Loc) -> Loc {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Plus`
[INFO] [stdout]    --> src/main.rs:209:5
[INFO] [stdout]     |
[INFO] [stdout] 209 |     Plus,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Minus`
[INFO] [stdout]    --> src/main.rs:210:5
[INFO] [stdout]     |
[INFO] [stdout] 210 |     Minus,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `plus`
[INFO] [stdout]    --> src/main.rs:216:8
[INFO] [stdout]     |
[INFO] [stdout] 216 |     fn plus(loc: Loc) -> Self {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `minus`
[INFO] [stdout]    --> src/main.rs:220:8
[INFO] [stdout]     |
[INFO] [stdout] 220 |     fn minus(loc: Loc) -> Self {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Add`
[INFO] [stdout]    --> src/main.rs:227:5
[INFO] [stdout]     |
[INFO] [stdout] 227 |     Add,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sub`
[INFO] [stdout]    --> src/main.rs:228:5
[INFO] [stdout]     |
[INFO] [stdout] 228 |     Sub,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Mult`
[INFO] [stdout]    --> src/main.rs:229:5
[INFO] [stdout]     |
[INFO] [stdout] 229 |     Mult,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Div`
[INFO] [stdout]    --> src/main.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 |     Div,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]    --> src/main.rs:236:8
[INFO] [stdout]     |
[INFO] [stdout] 236 |     fn add(loc: Loc) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sub`
[INFO] [stdout]    --> src/main.rs:239:8
[INFO] [stdout]     |
[INFO] [stdout] 239 |     fn sub(loc: Loc) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mult`
[INFO] [stdout]    --> src/main.rs:242:8
[INFO] [stdout]     |
[INFO] [stdout] 242 |     fn mult(loc: Loc) -> Self {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `div`
[INFO] [stdout]    --> src/main.rs:245:8
[INFO] [stdout]     |
[INFO] [stdout] 245 |     fn div(loc: Loc) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Num`
[INFO] [stdout]    --> src/main.rs:252:5
[INFO] [stdout]     |
[INFO] [stdout] 252 |     Num(u64),
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UniOp`
[INFO] [stdout]    --> src/main.rs:253:5
[INFO] [stdout]     |
[INFO] [stdout] 253 |     UniOp { op: UniOp, e: Box<Ast> },
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BinOp`
[INFO] [stdout]    --> src/main.rs:254:5
[INFO] [stdout]     |
[INFO] [stdout] 254 |     BinOp { op: BinOp, l: Box<Ast>, r: Box<Ast> },
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `num`
[INFO] [stdout]    --> src/main.rs:260:8
[INFO] [stdout]     |
[INFO] [stdout] 260 |     fn num(n: u64, loc: Loc) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `uniop`
[INFO] [stdout]    --> src/main.rs:264:8
[INFO] [stdout]     |
[INFO] [stdout] 264 |     fn uniop(op: UniOp, e: Ast, loc: Loc) -> Self {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `binop`
[INFO] [stdout]    --> src/main.rs:268:8
[INFO] [stdout]     |
[INFO] [stdout] 268 |     fn binop(op: BinOp, l: Ast, r: Ast, loc: Loc) -> Self {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnexpectedToken`
[INFO] [stdout]    --> src/main.rs:282:5
[INFO] [stdout]     |
[INFO] [stdout] 282 |     UnexpectedToken(Token),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NotExpression`
[INFO] [stdout]    --> src/main.rs:283:5
[INFO] [stdout]     |
[INFO] [stdout] 283 |     NotExpression(Token),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NotOperator`
[INFO] [stdout]    --> src/main.rs:284:5
[INFO] [stdout]     |
[INFO] [stdout] 284 |     NotOperator(Token),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnclonsedParen`
[INFO] [stdout]    --> src/main.rs:285:5
[INFO] [stdout]     |
[INFO] [stdout] 285 |     UnclonsedParen(Token),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RedundantExpression`
[INFO] [stdout]    --> src/main.rs:286:5
[INFO] [stdout]     |
[INFO] [stdout] 286 |     RedundantExpression(Token),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Eof`
[INFO] [stdout]    --> src/main.rs:287:5
[INFO] [stdout]     |
[INFO] [stdout] 287 |     Eof,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse`
[INFO] [stdout]    --> src/main.rs:290:4
[INFO] [stdout]     |
[INFO] [stdout] 290 | fn parse(tokens: Vec<Token>) -> Result<Ast, ParseError> {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_expr`
[INFO] [stdout]    --> src/main.rs:299:4
[INFO] [stdout]     |
[INFO] [stdout] 299 | fn parse_expr<Tokens>(tokens: &mut Peekable<Tokens>) -> Result<Ast, ParseError>
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_expr3`
[INFO] [stdout]    --> src/main.rs:306:4
[INFO] [stdout]     |
[INFO] [stdout] 306 | fn parse_expr3<Tokens>(tokens: &mut Peekable<Tokens>) -> Result<Ast, ParseError>
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_expr2`
[INFO] [stdout]    --> src/main.rs:334:4
[INFO] [stdout]     |
[INFO] [stdout] 334 | fn parse_expr2<Tokens>(tokens: &mut Peekable<Tokens>) -> Result<Ast, ParseError>
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_expr1`
[INFO] [stdout]    --> src/main.rs:362:4
[INFO] [stdout]     |
[INFO] [stdout] 362 | fn parse_expr1<Tokens>(tokens: &mut Peekable<Tokens>) -> Result<Ast, ParseError>
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_atom`
[INFO] [stdout]    --> src/main.rs:387:4
[INFO] [stdout]     |
[INFO] [stdout] 387 | fn parse_atom<Tokens>(tokens: &mut Peekable<Tokens>) -> Result<Ast, ParseError>
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "f8ae92426cbf0b6b406ba3492783882c0621cb6d8977955b02ad327c44f6ef1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8ae92426cbf0b6b406ba3492783882c0621cb6d8977955b02ad327c44f6ef1d", kill_on_drop: false }`
[INFO] [stdout] f8ae92426cbf0b6b406ba3492783882c0621cb6d8977955b02ad327c44f6ef1d