[INFO] updating cached repository https://github.com/tetsuo-cpp/charm
[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] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c4ea8d5b0252df553ce27735dfe3cacdfe401dca
[INFO] checking tetsuo-cpp/charm against master#be493fe8cc40c3d3f6030a1313c1ff747fce770d for pr-69129
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsuo-cpp%2Fcharm" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tetsuo-cpp/charm on toolchain be493fe8cc40c3d3f6030a1313c1ff747fce770d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tetsuo-cpp/charm
[INFO] finished tweaking git repo https://github.com/tetsuo-cpp/charm
[INFO] tweaked toml for git repo https://github.com/tetsuo-cpp/charm written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/tetsuo-cpp/charm already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "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] 9a22b2318e01eaea3e60a9df96e9fc2c14a15580f6b3024f3c02a08211725978
[INFO] running `"docker" "start" "-a" "9a22b2318e01eaea3e60a9df96e9fc2c14a15580f6b3024f3c02a08211725978"`
[INFO] [stderr]     Checking charm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:370:13
[INFO] [stderr]     |
[INFO] [stderr] 370 |         let mut lexer = Lexer::new(source);
[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: `parse`
[INFO] [stderr]    --> src/lib.rs:368:8
[INFO] [stderr]     |
[INFO] [stderr] 368 |     fn parse<'a>(source: &'a str) -> Result<Vec<Box<Ast>>, Box<dyn Error>> {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Ast`
[INFO] [stderr]    --> src/lib.rs:383:6
[INFO] [stderr]     |
[INFO] [stderr] 383 | enum Ast<'a> {
[INFO] [stderr]     |      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `IfNode`
[INFO] [stderr]    --> src/lib.rs:388:8
[INFO] [stderr]     |
[INFO] [stderr] 388 | struct IfNode<'a> {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `VarDeclNode`
[INFO] [stderr]    --> src/lib.rs:394:8
[INFO] [stderr]     |
[INFO] [stderr] 394 | struct VarDeclNode<'a> {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Ast`
[INFO] [stderr]    --> src/lib.rs:383:6
[INFO] [stderr]     |
[INFO] [stderr] 383 | enum Ast<'a> {
[INFO] [stderr]     |      ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `IfNode`
[INFO] [stderr]    --> src/lib.rs:388:8
[INFO] [stderr]     |
[INFO] [stderr] 388 | struct IfNode<'a> {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `VarDeclNode`
[INFO] [stderr]    --> src/lib.rs:394:8
[INFO] [stderr]     |
[INFO] [stderr] 394 | struct VarDeclNode<'a> {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parser`
[INFO] [stderr]    --> src/lib.rs:412:8
[INFO] [stderr]     |
[INFO] [stderr] 412 | struct Parser<'a> {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parser`
[INFO] [stderr]    --> src/lib.rs:412:8
[INFO] [stderr]     |
[INFO] [stderr] 412 | struct Parser<'a> {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/lib.rs:418:5
[INFO] [stderr]     |
[INFO] [stderr] 418 |     pub fn new(lexer: Lexer) -> Parser {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_top_level_expr`
[INFO] [stderr]    --> src/lib.rs:425:5
[INFO] [stderr]     |
[INFO] [stderr] 425 |     pub fn parse_top_level_expr(&mut self) -> Result<Option<Box<Ast<'a>>>, Box<dyn Error>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/lib.rs:418:5
[INFO] [stderr]     |
[INFO] [stderr] 418 |     pub fn new(lexer: Lexer) -> Parser {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_var_decl`
[INFO] [stderr]    --> src/lib.rs:438:5
[INFO] [stderr]     |
[INFO] [stderr] 438 |     fn parse_var_decl(&mut self) -> Result<Box<Ast<'a>>, Box<dyn Error>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_top_level_expr`
[INFO] [stderr]    --> src/lib.rs:425:5
[INFO] [stderr]     |
[INFO] [stderr] 425 |     pub fn parse_top_level_expr(&mut self) -> Result<Option<Box<Ast<'a>>>, Box<dyn Error>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_var_decl`
[INFO] [stderr]    --> src/lib.rs:438:5
[INFO] [stderr]     |
[INFO] [stderr] 438 |     fn parse_var_decl(&mut self) -> Result<Box<Ast<'a>>, Box<dyn Error>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `consume_token`
[INFO] [stderr]    --> src/lib.rs:449:5
[INFO] [stderr]     |
[INFO] [stderr] 449 |     fn consume_token(&mut self, kind: &TokenKind) -> Result<bool, Box<dyn Error>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `assert_token`
[INFO] [stderr]    --> src/lib.rs:458:5
[INFO] [stderr]     |
[INFO] [stderr] 458 |     fn assert_token(&mut self, kind: &TokenKind) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `consume_token`
[INFO] [stderr]    --> src/lib.rs:449:5
[INFO] [stderr]     |
[INFO] [stderr] 449 |     fn consume_token(&mut self, kind: &TokenKind) -> Result<bool, Box<dyn Error>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `assert_token`
[INFO] [stderr]    --> src/lib.rs:458:5
[INFO] [stderr]     |
[INFO] [stderr] 458 |     fn assert_token(&mut self, kind: &TokenKind) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `"docker" "inspect" "9a22b2318e01eaea3e60a9df96e9fc2c14a15580f6b3024f3c02a08211725978"`
[INFO] running `"docker" "rm" "-f" "9a22b2318e01eaea3e60a9df96e9fc2c14a15580f6b3024f3c02a08211725978"`
[INFO] [stdout] 9a22b2318e01eaea3e60a9df96e9fc2c14a15580f6b3024f3c02a08211725978