[INFO] cloning repository https://github.com/abhijeetbhagat/krum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/abhijeetbhagat/krum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabhijeetbhagat%2Fkrum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabhijeetbhagat%2Fkrum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cd9af066de29ee92e754a061ce000021e720c657
[INFO] checking abhijeetbhagat/krum against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabhijeetbhagat%2Fkrum" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/abhijeetbhagat/krum
[INFO] finished tweaking git repo https://github.com/abhijeetbhagat/krum
[INFO] tweaked toml for git repo https://github.com/abhijeetbhagat/krum written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/abhijeetbhagat/krum on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/abhijeetbhagat/krum 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1efec9ac849358b9010bb385cbb007849db160bb5c0f44475d2651b70fede59
[INFO] running `Command { std: "docker" "start" "-a" "b1efec9ac849358b9010bb385cbb007849db160bb5c0f44475d2651b70fede59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1efec9ac849358b9010bb385cbb007849db160bb5c0f44475d2651b70fede59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1efec9ac849358b9010bb385cbb007849db160bb5c0f44475d2651b70fede59", kill_on_drop: false }`
[INFO] [stdout] b1efec9ac849358b9010bb385cbb007849db160bb5c0f44475d2651b70fede59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a55e69eb7119d1367129853a80b5275cafff6a0b80ebabb1628bbe2f1a79878
[INFO] running `Command { std: "docker" "start" "-a" "4a55e69eb7119d1367129853a80b5275cafff6a0b80ebabb1628bbe2f1a79878", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Checking krum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `match_default_bindings` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(match_default_bindings)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/parser.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |           let mut exp = match self.get_cur_tok() {
[INFO] [stdout]    |  _______________________-
[INFO] [stdout] 30 | |             Token::LeftParen => {
[INFO] [stdout] 31 | |                 return Expression::Dummy
[INFO] [stdout] ...  |
[INFO] [stdout] 42 | |             _ => return Expression::Dummy
[INFO] [stdout] 43 | |         };
[INFO] [stdout]    | |_________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 44 |           return exp
[INFO] [stdout]    |           ^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/parser.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let mut exp = match self.get_cur_tok() {
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cur_tok_line`, `cur_tok_col`, and `src_len` are never read
[INFO] [stdout]  --> src/lexer.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Lexer<'a> {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 4 |     src : &'a [u8],
[INFO] [stdout] 5 |     cur_tok_line : usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 6 |     cur_tok_col : usize,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 7 |     i : usize,
[INFO] [stdout] 8 |     src_len : usize,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `expression` is never read
[INFO] [stdout]   --> src/ast.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Program {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 41 |     expression : Expression
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cur_tok` is never read
[INFO] [stdout]  --> src/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Parser<'a> {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 6 |     lexer : Lexer<'a>,
[INFO] [stdout] 7 |     cur_tok : Token,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_program` is never used
[INFO] [stdout]   --> src/parser.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a> Parser<'a> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn parse_program(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `match_default_bindings` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(match_default_bindings)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/parser.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |           let mut exp = match self.get_cur_tok() {
[INFO] [stdout]    |  _______________________-
[INFO] [stdout] 30 | |             Token::LeftParen => {
[INFO] [stdout] 31 | |                 return Expression::Dummy
[INFO] [stdout] ...  |
[INFO] [stdout] 42 | |             _ => return Expression::Dummy
[INFO] [stdout] 43 | |         };
[INFO] [stdout]    | |_________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 44 |           return exp
[INFO] [stdout]    |           ^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/parser.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let mut exp = match self.get_cur_tok() {
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cur_tok_line`, `cur_tok_col`, and `src_len` are never read
[INFO] [stdout]  --> src/lexer.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Lexer<'a> {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 4 |     src : &'a [u8],
[INFO] [stdout] 5 |     cur_tok_line : usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 6 |     cur_tok_col : usize,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 7 |     i : usize,
[INFO] [stdout] 8 |     src_len : usize,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `expression` is never read
[INFO] [stdout]   --> src/ast.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Program {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 41 |     expression : Expression
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cur_tok` is never read
[INFO] [stdout]  --> src/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Parser<'a> {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 6 |     lexer : Lexer<'a>,
[INFO] [stdout] 7 |     cur_tok : Token,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_program` is never used
[INFO] [stdout]   --> src/parser.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a> Parser<'a> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn parse_program(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "4a55e69eb7119d1367129853a80b5275cafff6a0b80ebabb1628bbe2f1a79878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a55e69eb7119d1367129853a80b5275cafff6a0b80ebabb1628bbe2f1a79878", kill_on_drop: false }`
[INFO] [stdout] 4a55e69eb7119d1367129853a80b5275cafff6a0b80ebabb1628bbe2f1a79878
