[INFO] updating cached repository https://github.com/tetsuo-cpp/charm
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f857bb35c53721e3c210d399d74a853eedb0e30
[INFO] checking tetsuo-cpp/charm against try#85cc1486e1f000dce4bb8e1b3cfab2b654b102a8 for pr-73323
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsuo-cpp%2Fcharm" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tetsuo-cpp/charm on toolchain 85cc1486e1f000dce4bb8e1b3cfab2b654b102a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-8/source/Cargo.toml
[INFO] crate git repo https://github.com/tetsuo-cpp/charm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bbcc456b5d75423701f3a88b52e4ba03736e62c928ed4782850a035413ca3b0
[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" "9bbcc456b5d75423701f3a88b52e4ba03736e62c928ed4782850a035413ca3b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bbcc456b5d75423701f3a88b52e4ba03736e62c928ed4782850a035413ca3b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bbcc456b5d75423701f3a88b52e4ba03736e62c928ed4782850a035413ca3b0", kill_on_drop: false }`
[INFO] [stdout] 9bbcc456b5d75423701f3a88b52e4ba03736e62c928ed4782850a035413ca3b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f4dc6f633588d216933347ea35ccde6e0d63e17bf8730eb6d36fbcd3dccdb61
[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" "6f4dc6f633588d216933347ea35ccde6e0d63e17bf8730eb6d36fbcd3dccdb61", kill_on_drop: false }`
[INFO] [stderr]     Checking charm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `If`
[INFO] [stdout]    --> src/lib.rs:416:5
[INFO] [stdout]     |
[INFO] [stdout] 416 |     If(IfNode<'a>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BinOp`
[INFO] [stdout]    --> src/lib.rs:418:5
[INFO] [stdout]     |
[INFO] [stdout] 418 |     BinOp(BinOpNode<'a>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `condition`
[INFO] [stdout]    --> src/lib.rs:422:5
[INFO] [stdout]     |
[INFO] [stdout] 422 |     condition: Box<Ast<'a>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `then_block`
[INFO] [stdout]    --> src/lib.rs:423:5
[INFO] [stdout]     |
[INFO] [stdout] 423 |     then_block: Vec<Ast<'a>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `else_block`
[INFO] [stdout]    --> src/lib.rs:424:5
[INFO] [stdout]     |
[INFO] [stdout] 424 |     else_block: Vec<Ast<'a>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]    --> src/lib.rs:428:5
[INFO] [stdout]     |
[INFO] [stdout] 428 |     name: &'a [u8],
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rhs`
[INFO] [stdout]    --> src/lib.rs:429:5
[INFO] [stdout]     |
[INFO] [stdout] 429 |     rhs: Box<Option<Ast<'a>>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `op`
[INFO] [stdout]    --> src/lib.rs:433:5
[INFO] [stdout]     |
[INFO] [stdout] 433 |     op: Token<'a>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lhs`
[INFO] [stdout]    --> src/lib.rs:434:5
[INFO] [stdout]     |
[INFO] [stdout] 434 |     lhs: Box<Ast<'a>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rhs`
[INFO] [stdout]    --> src/lib.rs:435:5
[INFO] [stdout]     |
[INFO] [stdout] 435 |     rhs: Box<Ast<'a>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_expr`
[INFO] [stdout]    --> src/lib.rs:488:8
[INFO] [stdout]     |
[INFO] [stdout] 488 |     fn parse_expr(&mut self) -> Result<Box<Ast<'a>>, Box<dyn Error>> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_addition`
[INFO] [stdout]    --> src/lib.rs:492:8
[INFO] [stdout]     |
[INFO] [stdout] 492 |     fn parse_addition(&mut self) -> Result<Box<Ast<'a>>, Box<dyn Error>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_multiplication`
[INFO] [stdout]    --> src/lib.rs:510:8
[INFO] [stdout]     |
[INFO] [stdout] 510 |     fn parse_multiplication(&mut self) -> Result<Box<Ast<'a>>, Box<dyn Error>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:402:13
[INFO] [stdout]     |
[INFO] [stdout] 402 |         let mut lexer = Lexer::new(source);
[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: function is never used: `parse`
[INFO] [stdout]    --> src/lib.rs:400:8
[INFO] [stdout]     |
[INFO] [stdout] 400 |     fn parse<'a>(source: &'a str) -> Result<Vec<Box<Ast>>, Box<dyn Error>> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `If`
[INFO] [stdout]    --> src/lib.rs:416:5
[INFO] [stdout]     |
[INFO] [stdout] 416 |     If(IfNode<'a>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BinOp`
[INFO] [stdout]    --> src/lib.rs:418:5
[INFO] [stdout]     |
[INFO] [stdout] 418 |     BinOp(BinOpNode<'a>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `condition`
[INFO] [stdout]    --> src/lib.rs:422:5
[INFO] [stdout]     |
[INFO] [stdout] 422 |     condition: Box<Ast<'a>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `then_block`
[INFO] [stdout]    --> src/lib.rs:423:5
[INFO] [stdout]     |
[INFO] [stdout] 423 |     then_block: Vec<Ast<'a>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `else_block`
[INFO] [stdout]    --> src/lib.rs:424:5
[INFO] [stdout]     |
[INFO] [stdout] 424 |     else_block: Vec<Ast<'a>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]    --> src/lib.rs:428:5
[INFO] [stdout]     |
[INFO] [stdout] 428 |     name: &'a [u8],
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rhs`
[INFO] [stdout]    --> src/lib.rs:429:5
[INFO] [stdout]     |
[INFO] [stdout] 429 |     rhs: Box<Option<Ast<'a>>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `op`
[INFO] [stdout]    --> src/lib.rs:433:5
[INFO] [stdout]     |
[INFO] [stdout] 433 |     op: Token<'a>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lhs`
[INFO] [stdout]    --> src/lib.rs:434:5
[INFO] [stdout]     |
[INFO] [stdout] 434 |     lhs: Box<Ast<'a>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rhs`
[INFO] [stdout]    --> src/lib.rs:435:5
[INFO] [stdout]     |
[INFO] [stdout] 435 |     rhs: Box<Ast<'a>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_expr`
[INFO] [stdout]    --> src/lib.rs:488:8
[INFO] [stdout]     |
[INFO] [stdout] 488 |     fn parse_expr(&mut self) -> Result<Box<Ast<'a>>, Box<dyn Error>> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_addition`
[INFO] [stdout]    --> src/lib.rs:492:8
[INFO] [stdout]     |
[INFO] [stdout] 492 |     fn parse_addition(&mut self) -> Result<Box<Ast<'a>>, Box<dyn Error>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_multiplication`
[INFO] [stdout]    --> src/lib.rs:510:8
[INFO] [stdout]     |
[INFO] [stdout] 510 |     fn parse_multiplication(&mut self) -> Result<Box<Ast<'a>>, Box<dyn Error>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "6f4dc6f633588d216933347ea35ccde6e0d63e17bf8730eb6d36fbcd3dccdb61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f4dc6f633588d216933347ea35ccde6e0d63e17bf8730eb6d36fbcd3dccdb61", kill_on_drop: false }`
[INFO] [stdout] 6f4dc6f633588d216933347ea35ccde6e0d63e17bf8730eb6d36fbcd3dccdb61