[INFO] cloning repository https://github.com/frxnxtic/matstmt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/frxnxtic/matstmt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrxnxtic%2Fmatstmt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrxnxtic%2Fmatstmt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bc08a4ead65713ba143acbfddc95531ff7119bd8
[INFO] checking frxnxtic/matstmt against try#5fee451ebd94296ea05214e819c311e164b30af6 for pr-139042
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrxnxtic%2Fmatstmt" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/frxnxtic/matstmt on toolchain 5fee451ebd94296ea05214e819c311e164b30af6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/frxnxtic/matstmt
[INFO] finished tweaking git repo https://github.com/frxnxtic/matstmt
[INFO] tweaked toml for git repo https://github.com/frxnxtic/matstmt written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/frxnxtic/matstmt 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" "+5fee451ebd94296ea05214e819c311e164b30af6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b5328d776124c7d227f24b0967f140c1ab000b676da1126917d0f2a7ec93de7
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[INFO] running `Command { std: "docker" "inspect" "0b5328d776124c7d227f24b0967f140c1ab000b676da1126917d0f2a7ec93de7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b5328d776124c7d227f24b0967f140c1ab000b676da1126917d0f2a7ec93de7", kill_on_drop: false }`
[INFO] [stdout] 0b5328d776124c7d227f24b0967f140c1ab000b676da1126917d0f2a7ec93de7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3447f943df24de672f5b179a1696fe7f8351848cc4b23bf43ec1883d4c44fe3b
[INFO] running `Command { std: "docker" "start" "-a" "3447f943df24de672f5b179a1696fe7f8351848cc4b23bf43ec1883d4c44fe3b", kill_on_drop: false }`
[INFO] [stderr]     Checking matstmt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: named argument `width` is not used by name
[INFO] [stdout]   --> src/lexer/lexer.rs:47:42
[INFO] [stdout]    |
[INFO] [stdout] 47 |                     print!("{:width$}^", width = self.cursor);
[INFO] [stdout]    |                             ---------    ^^^^^ this named argument is referred to by position in formatting string
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             this formatting argument uses named argument `width` by position
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(named_arguments_used_positionally)]` on by default
[INFO] [stdout] help: use the named argument by name to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 47 |                     print!("{width:width$}^", width = self.cursor);
[INFO] [stdout]    |                              +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::ErrorKind::UnexpectedEof`
[INFO] [stdout]  --> src/parser/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::ErrorKind::UnexpectedEof;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: named argument `width` is not used by name
[INFO] [stdout]   --> src/lexer/lexer.rs:47:42
[INFO] [stdout]    |
[INFO] [stdout] 47 |                     print!("{:width$}^", width = self.cursor);
[INFO] [stdout]    |                             ---------    ^^^^^ this named argument is referred to by position in formatting string
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             this formatting argument uses named argument `width` by position
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(named_arguments_used_positionally)]` on by default
[INFO] [stdout] help: use the named argument by name to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 47 |                     print!("{width:width$}^", width = self.cursor);
[INFO] [stdout]    |                              +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::ErrorKind::UnexpectedEof`
[INFO] [stdout]  --> src/parser/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::ErrorKind::UnexpectedEof;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/parser/grammar.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Number(i64),
[INFO] [stdout]   |     ------ ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 3 -     Number(i64),
[INFO] [stdout] 3 +     Number(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]  --> src/parser/grammar.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 |     BinaryOp(Box<Expr>, char, Box<Expr>),
[INFO] [stdout]   |     -------- ^^^^^^^^^  ^^^^  ^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 5 -     BinaryOp(Box<Expr>, char, Box<Expr>),
[INFO] [stdout] 5 +     BinaryOp((), (), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Identifier`, `EOF`, and `Semicolon` are never constructed
[INFO] [stdout]  --> src/parser/grammar.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Expr {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 3 |     Number(i64),
[INFO] [stdout] 4 |     Identifier(String),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 5 |     BinaryOp(Box<Expr>, char, Box<Expr>),
[INFO] [stdout] 6 |     EOF,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 7 |     Semicolon
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser/grammar.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Expression(Expr),
[INFO] [stdout]    |     ---------- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 12 -     Expression(Expr),
[INFO] [stdout] 12 +     Expression(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser/grammar.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Print(Expr)
[INFO] [stdout]    |     ----- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 13 -     Print(Expr)
[INFO] [stdout] 13 +     Print(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/parser/grammar.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Number(i64),
[INFO] [stdout]   |     ------ ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 3 -     Number(i64),
[INFO] [stdout] 3 +     Number(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]  --> src/parser/grammar.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 |     BinaryOp(Box<Expr>, char, Box<Expr>),
[INFO] [stdout]   |     -------- ^^^^^^^^^  ^^^^  ^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 5 -     BinaryOp(Box<Expr>, char, Box<Expr>),
[INFO] [stdout] 5 +     BinaryOp((), (), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Identifier`, `EOF`, and `Semicolon` are never constructed
[INFO] [stdout]  --> src/parser/grammar.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Expr {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 3 |     Number(i64),
[INFO] [stdout] 4 |     Identifier(String),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 5 |     BinaryOp(Box<Expr>, char, Box<Expr>),
[INFO] [stdout] 6 |     EOF,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 7 |     Semicolon
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser/grammar.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Expression(Expr),
[INFO] [stdout]    |     ---------- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 12 -     Expression(Expr),
[INFO] [stdout] 12 +     Expression(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser/grammar.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Print(Expr)
[INFO] [stdout]    |     ----- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 13 -     Print(Expr)
[INFO] [stdout] 13 +     Print(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "3447f943df24de672f5b179a1696fe7f8351848cc4b23bf43ec1883d4c44fe3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3447f943df24de672f5b179a1696fe7f8351848cc4b23bf43ec1883d4c44fe3b", kill_on_drop: false }`
[INFO] [stdout] 3447f943df24de672f5b179a1696fe7f8351848cc4b23bf43ec1883d4c44fe3b
