[INFO] updating cached repository https://github.com/jazz-lang/Jazz
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/jazz-lang/Jazz
[INFO] [stderr]    6daaaf3..e99e25d  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e99e25de672791493ec3dd6cae87a1e0256010db
[INFO] checking jazz-lang/Jazz against try#8a749131e7beb72f6edacefd2bdcbed3d67b2112 for pr-72331
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjazz-lang%2FJazz" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jazz-lang/Jazz on toolchain 8a749131e7beb72f6edacefd2bdcbed3d67b2112
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jazz-lang/Jazz
[INFO] finished tweaking git repo https://github.com/jazz-lang/Jazz
[INFO] tweaked toml for git repo https://github.com/jazz-lang/Jazz written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jazz-lang/Jazz already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 954b4aa30de09d3e80dfff8a998f5626c1e3ac6dc9991e6da739aec9b82b0dde
[INFO] running `"docker" "start" "-a" "954b4aa30de09d3e80dfff8a998f5626c1e3ac6dc9991e6da739aec9b82b0dde"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.3.5
[INFO] [stderr]     Checking dashmap v3.11.1
[INFO] [stderr]     Checking lasso v0.2.2
[INFO] [stderr]     Checking jazzml v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `thread`
[INFO] [stderr]  --> src/lib.rs:2:11
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::{thread, sync::Arc};
[INFO] [stderr]   |           ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `thread`
[INFO] [stderr]  --> src/lib.rs:2:11
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::{thread, sync::Arc};
[INFO] [stderr]   |           ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `lasso::Spur`
[INFO] [stderr]  --> src/utils.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use lasso::Spur;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/utils.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::*`
[INFO] [stderr]  --> src/parser.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::*;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `lasso::Spur`
[INFO] [stderr]  --> src/utils.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use lasso::Spur;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/utils.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::*`
[INFO] [stderr]  --> src/parser.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::*;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/parser.rs:100:39
[INFO] [stderr]     |
[INFO] [stderr] 100 |         (Token::Const(Constant::Ident(name)), p) => match s.read_token()? {
[INFO] [stderr]     |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/parser.rs:100:47
[INFO] [stderr]     |
[INFO] [stderr] 100 |         (Token::Const(Constant::Ident(name)), p) => match s.read_token()? {
[INFO] [stderr]     |                                               ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/parser.rs:197:13
[INFO] [stderr]     |
[INFO] [stderr] 197 |     let (t, p) = type_path(s)?;
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/parser.rs:241:45
[INFO] [stderr]     |
[INFO] [stderr] 241 |         (Token::Const(Constant::Constr(m)), p) => match s.read_token()? {
[INFO] [stderr]     |                                             ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pos`
[INFO] [stderr]   --> src/lexer.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let pos = self.reader.pos();
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/utils.rs:29:16
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn pop(mut self) -> List<T> {
[INFO] [stderr]    |                ----^^^^
[INFO] [stderr]    |                |
[INFO] [stderr]    |                help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/parser.rs:100:39
[INFO] [stderr]     |
[INFO] [stderr] 100 |         (Token::Const(Constant::Ident(name)), p) => match s.read_token()? {
[INFO] [stderr]     |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/parser.rs:100:47
[INFO] [stderr]     |
[INFO] [stderr] 100 |         (Token::Const(Constant::Ident(name)), p) => match s.read_token()? {
[INFO] [stderr]     |                                               ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/parser.rs:197:13
[INFO] [stderr]     |
[INFO] [stderr] 197 |     let (t, p) = type_path(s)?;
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/parser.rs:241:45
[INFO] [stderr]     |
[INFO] [stderr] 241 |         (Token::Const(Constant::Constr(m)), p) => match s.read_token()? {
[INFO] [stderr]     |                                             ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pos`
[INFO] [stderr]   --> src/lexer.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let pos = self.reader.pos();
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/utils.rs:29:16
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn pop(mut self) -> List<T> {
[INFO] [stderr]    |                ----^^^^
[INFO] [stderr]    |                |
[INFO] [stderr]    |                help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `can_swap`
[INFO] [stderr]   --> src/parser.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn can_swap(op1: &str, op2: &str) -> bool {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_binop`
[INFO] [stderr]   --> src/parser.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn make_binop(op: &str, e1: P<Expr>, e2: P<Expr>) -> P<Expr> {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_list_pat`
[INFO] [stderr]   --> src/parser.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn make_list_pat(p: Position, l: List<P<Pattern>>) -> P<Pattern> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_list`
[INFO] [stderr]   --> src/parser.rs:68:4
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn make_list(p: Position, l: List<P<Expr>>) -> P<Expr> {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_unop`
[INFO] [stderr]   --> src/parser.rs:89:4
[INFO] [stderr]    |
[INFO] [stderr] 89 | fn is_unop(x: &str) -> bool {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `block1`
[INFO] [stderr]   --> src/parser.rs:98:4
[INFO] [stderr]    |
[INFO] [stderr] 98 | fn block1(s: &mut Lexer) -> Result<P<Expr>, String> {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `expr_next`
[INFO] [stderr]    --> src/parser.rs:107:4
[INFO] [stderr]     |
[INFO] [stderr] 107 | fn expr_next(e: P<Expr>, s: &mut Lexer) -> EResult {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `expr_constr`
[INFO] [stderr]    --> src/parser.rs:113:4
[INFO] [stderr]     |
[INFO] [stderr] 113 | fn expr_constr(n: Spur, p: Position, s: &mut Lexer) -> EResult {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `expr_constr2`
[INFO] [stderr]    --> src/parser.rs:142:4
[INFO] [stderr]     |
[INFO] [stderr] 142 | fn expr_constr2(s: &mut Lexer) -> EResult {
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `can_swap`
[INFO] [stderr]   --> src/parser.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn can_swap(op1: &str, op2: &str) -> bool {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_binop`
[INFO] [stderr]   --> src/parser.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn make_binop(op: &str, e1: P<Expr>, e2: P<Expr>) -> P<Expr> {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_list_pat`
[INFO] [stderr]   --> src/parser.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn make_list_pat(p: Position, l: List<P<Pattern>>) -> P<Pattern> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_list`
[INFO] [stderr]   --> src/parser.rs:68:4
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn make_list(p: Position, l: List<P<Expr>>) -> P<Expr> {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_unop`
[INFO] [stderr]   --> src/parser.rs:89:4
[INFO] [stderr]    |
[INFO] [stderr] 89 | fn is_unop(x: &str) -> bool {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `block1`
[INFO] [stderr]   --> src/parser.rs:98:4
[INFO] [stderr]    |
[INFO] [stderr] 98 | fn block1(s: &mut Lexer) -> Result<P<Expr>, String> {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `expr_next`
[INFO] [stderr]    --> src/parser.rs:107:4
[INFO] [stderr]     |
[INFO] [stderr] 107 | fn expr_next(e: P<Expr>, s: &mut Lexer) -> EResult {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `expr_constr`
[INFO] [stderr]    --> src/parser.rs:113:4
[INFO] [stderr]     |
[INFO] [stderr] 113 | fn expr_constr(n: Spur, p: Position, s: &mut Lexer) -> EResult {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `expr_constr2`
[INFO] [stderr]    --> src/parser.rs:142:4
[INFO] [stderr]     |
[INFO] [stderr] 142 | fn expr_constr2(s: &mut Lexer) -> EResult {
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.91s
[INFO] running `"docker" "inspect" "954b4aa30de09d3e80dfff8a998f5626c1e3ac6dc9991e6da739aec9b82b0dde"`
[INFO] running `"docker" "rm" "-f" "954b4aa30de09d3e80dfff8a998f5626c1e3ac6dc9991e6da739aec9b82b0dde"`
[INFO] [stdout] 954b4aa30de09d3e80dfff8a998f5626c1e3ac6dc9991e6da739aec9b82b0dde