[INFO] cloning repository https://github.com/shevlfs/rustcompiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shevlfs/rustcompiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshevlfs%2Frustcompiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshevlfs%2Frustcompiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e91d1333554f59280f97f112d2c5b54cfba7e27
[INFO] building shevlfs/rustcompiler against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshevlfs%2Frustcompiler" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shevlfs/rustcompiler on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shevlfs/rustcompiler
[INFO] finished tweaking git repo https://github.com/shevlfs/rustcompiler
[INFO] tweaked toml for git repo https://github.com/shevlfs/rustcompiler written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/shevlfs/rustcompiler 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded text_io v0.1.12
[INFO] [stderr]   Downloaded prev-iter v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e5dfcc3b80714e69e03c1a69aa0545136a0c7f1dd2fbd43ab9a7a0b036f82e5
[INFO] running `Command { std: "docker" "start" "-a" "6e5dfcc3b80714e69e03c1a69aa0545136a0c7f1dd2fbd43ab9a7a0b036f82e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e5dfcc3b80714e69e03c1a69aa0545136a0c7f1dd2fbd43ab9a7a0b036f82e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e5dfcc3b80714e69e03c1a69aa0545136a0c7f1dd2fbd43ab9a7a0b036f82e5", kill_on_drop: false }`
[INFO] [stdout] 6e5dfcc3b80714e69e03c1a69aa0545136a0c7f1dd2fbd43ab9a7a0b036f82e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffa0ce89b7ef7e9b52d36cca1963f8165cddbf287a3feb6a7c7fe7ca28b848f9
[INFO] running `Command { std: "docker" "start" "-a" "ffa0ce89b7ef7e9b52d36cca1963f8165cddbf287a3feb6a7c7fe7ca28b848f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling prev-iter v0.1.2
[INFO] [stderr]    Compiling text_io v0.1.12
[INFO] [stderr]    Compiling rustcompiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BufRead` and `self`
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, BufRead};
[INFO] [stdout]   |               ^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Peekable`
[INFO] [stdout]  --> src/token.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::{Peekable, Iterator};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type parameter `iter` should have an upper camel case name
[INFO] [stdout]    --> src/token.rs:282:19
[INFO] [stdout]     |
[INFO] [stdout] 282 | fn parsebinop<'a, iter: Iterator<Item=&'a Token>>(left: &Expression, right: &mut prev_iter::PrevPeekable<iter>, cur: &Token, opscount: &m...
[INFO] [stdout]     |                   ^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Iter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `arg` is never read
[INFO] [stdout]   --> src/token.rs:30:25
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 let mut arg = String::new();
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fnm` is never read
[INFO] [stdout]   --> src/token.rs:59:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let mut fnm = String::new(); 
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fnmfound` is never read
[INFO] [stdout]   --> src/token.rs:81:25
[INFO] [stdout]    |
[INFO] [stdout] 81 |                         fnmfound = true;
[INFO] [stdout]    |                         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fnm`
[INFO] [stdout]   --> src/token.rs:86:33
[INFO] [stdout]    |
[INFO] [stdout] 86 |                         let mut fnm = String::new();
[INFO] [stdout]    |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_fnm`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fnmfound` is never read
[INFO] [stdout]   --> src/token.rs:89:25
[INFO] [stdout]    |
[INFO] [stdout] 89 |                         fnmfound = true;
[INFO] [stdout]    |                         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fnm`
[INFO] [stdout]    --> src/token.rs:110:33
[INFO] [stdout]     |
[INFO] [stdout] 110 |                         let mut fnm = String::new();
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_fnm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fnmfound` is never read
[INFO] [stdout]    --> src/token.rs:117:25
[INFO] [stdout]     |
[INFO] [stdout] 117 |                         fnmfound = true;
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fnm`
[INFO] [stdout]    --> src/token.rs:138:33
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         let mut fnm = String::new();
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_fnm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fnmfound` is never read
[INFO] [stdout]    --> src/token.rs:145:25
[INFO] [stdout]     |
[INFO] [stdout] 145 |                         fnmfound = true;
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fnm`
[INFO] [stdout]    --> src/token.rs:166:33
[INFO] [stdout]     |
[INFO] [stdout] 166 |                         let mut fnm = String::new();
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_fnm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fnmfound` is never read
[INFO] [stdout]    --> src/token.rs:173:25
[INFO] [stdout]     |
[INFO] [stdout] 173 |                         fnmfound = true;
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fnm`
[INFO] [stdout]    --> src/token.rs:194:33
[INFO] [stdout]     |
[INFO] [stdout] 194 |                         let mut fnm = String::new();
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_fnm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/token.rs:86:29
[INFO] [stdout]    |
[INFO] [stdout] 86 |                         let mut fnm = String::new();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/token.rs:110:29
[INFO] [stdout]     |
[INFO] [stdout] 110 |                         let mut fnm = String::new();
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/token.rs:138:29
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         let mut fnm = String::new();
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/token.rs:166:29
[INFO] [stdout]     |
[INFO] [stdout] 166 |                         let mut fnm = String::new();
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/token.rs:194:29
[INFO] [stdout]     |
[INFO] [stdout] 194 |                         let mut fnm = String::new();
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `numscount` is assigned to, but never used
[INFO] [stdout]    --> src/token.rs:339:13
[INFO] [stdout]     |
[INFO] [stdout] 339 |     let mut numscount = 7;
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_numscount` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kword`
[INFO] [stdout]    --> src/token.rs:367:21
[INFO] [stdout]     |
[INFO] [stdout] 367 |                 let kword = token.clone();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_kword`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `numscount` is never read
[INFO] [stdout]    --> src/token.rs:371:21
[INFO] [stdout]     |
[INFO] [stdout] 371 |                     numscount = 1;
[INFO] [stdout]     |                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/token.rs:270:12
[INFO] [stdout]     |
[INFO] [stdout] 270 |     Stdout(Box<Expression>), 
[INFO] [stdout]     |     ------ ^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 270 |     Stdout(()), 
[INFO] [stdout]     |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]    --> src/token.rs:272:10
[INFO] [stdout]     |
[INFO] [stdout] 272 |     Math(Box<Expression> ,char, Box<Expression>),
[INFO] [stdout]     |     ---- ^^^^^^^^^^^^^^^  ^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 272 |     Math(() ,(), ()),
[INFO] [stdout]     |          ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]    --> src/token.rs:273:16
[INFO] [stdout]     |
[INFO] [stdout] 273 |     Assignment(Box<Expression> ,String),
[INFO] [stdout]     |     ---------- ^^^^^^^^^^^^^^^  ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 273 |     Assignment(() ,()),
[INFO] [stdout]     |                ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]    --> src/token.rs:274:10
[INFO] [stdout]     |
[INFO] [stdout] 274 |     Eqls(Box<Expression>, Box<Expression>),
[INFO] [stdout]     |     ---- ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 274 |     Eqls((), ()),
[INFO] [stdout]     |          ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/token.rs:275:13
[INFO] [stdout]     |
[INFO] [stdout] 275 |     Literal(String),
[INFO] [stdout]     |     ------- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 275 |     Literal(()),
[INFO] [stdout]     |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/token.rs:277:9
[INFO] [stdout]     |
[INFO] [stdout] 277 |     Num(f64),
[INFO] [stdout]     |     --- ^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 277 |     Num(()),
[INFO] [stdout]     |         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/token.rs:278:13
[INFO] [stdout]     |
[INFO] [stdout] 278 |     VarName(String),
[INFO] [stdout]     |     ------- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 278 |     VarName(()),
[INFO] [stdout]     |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/token.rs:279:13
[INFO] [stdout]     |
[INFO] [stdout] 279 |     Vartype(String),
[INFO] [stdout]     |     ------- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 279 |     Vartype(()),
[INFO] [stdout]     |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ParseError` is never constructed
[INFO] [stdout]    --> src/token.rs:276:5
[INFO] [stdout]     |
[INFO] [stdout] 269 | pub enum Expression{
[INFO] [stdout]     |          ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 276 |     ParseError(),
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Token` instead of cloning the inner type
[INFO] [stdout]    --> src/token.rs:283:44
[INFO] [stdout]     |
[INFO] [stdout] 283 |     let prevel = right.prev_peek().unwrap().clone();
[INFO] [stdout]     |                                            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Token` instead of cloning the inner type
[INFO] [stdout]    --> src/token.rs:284:38
[INFO] [stdout]     |
[INFO] [stdout] 284 |     let nxtel = right.peek().unwrap().clone();
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Token` instead of cloning the inner type
[INFO] [stdout]    --> src/token.rs:361:71
[INFO] [stdout]     |
[INFO] [stdout] 361 |                 if let Token::Word(content) = iterator.peek().unwrap().clone(){
[INFO] [stdout]     |                                                                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "ffa0ce89b7ef7e9b52d36cca1963f8165cddbf287a3feb6a7c7fe7ca28b848f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffa0ce89b7ef7e9b52d36cca1963f8165cddbf287a3feb6a7c7fe7ca28b848f9", kill_on_drop: false }`
[INFO] [stdout] ffa0ce89b7ef7e9b52d36cca1963f8165cddbf287a3feb6a7c7fe7ca28b848f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3103350c716f89a8976d80530c972edd453a93b7794d776e6b4067efa2ad4803
[INFO] running `Command { std: "docker" "start" "-a" "3103350c716f89a8976d80530c972edd453a93b7794d776e6b4067efa2ad4803", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustcompiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BufRead` and `self`
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, BufRead};
[INFO] [stdout]   |               ^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Peekable`
[INFO] [stdout]  --> src/token.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::{Peekable, Iterator};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type parameter `iter` should have an upper camel case name
[INFO] [stdout]    --> src/token.rs:282:19
[INFO] [stdout]     |
[INFO] [stdout] 282 | fn parsebinop<'a, iter: Iterator<Item=&'a Token>>(left: &Expression, right: &mut prev_iter::PrevPeekable<iter>, cur: &Token, opscount: &m...
[INFO] [stdout]     |                   ^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Iter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `arg` is never read
[INFO] [stdout]   --> src/token.rs:30:25
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 let mut arg = String::new();
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fnm` is never read
[INFO] [stdout]   --> src/token.rs:59:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let mut fnm = String::new(); 
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fnmfound` is never read
[INFO] [stdout]   --> src/token.rs:81:25
[INFO] [stdout]    |
[INFO] [stdout] 81 |                         fnmfound = true;
[INFO] [stdout]    |                         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fnm`
[INFO] [stdout]   --> src/token.rs:86:33
[INFO] [stdout]    |
[INFO] [stdout] 86 |                         let mut fnm = String::new();
[INFO] [stdout]    |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_fnm`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fnmfound` is never read
[INFO] [stdout]   --> src/token.rs:89:25
[INFO] [stdout]    |
[INFO] [stdout] 89 |                         fnmfound = true;
[INFO] [stdout]    |                         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fnm`
[INFO] [stdout]    --> src/token.rs:110:33
[INFO] [stdout]     |
[INFO] [stdout] 110 |                         let mut fnm = String::new();
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_fnm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fnmfound` is never read
[INFO] [stdout]    --> src/token.rs:117:25
[INFO] [stdout]     |
[INFO] [stdout] 117 |                         fnmfound = true;
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fnm`
[INFO] [stdout]    --> src/token.rs:138:33
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         let mut fnm = String::new();
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_fnm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fnmfound` is never read
[INFO] [stdout]    --> src/token.rs:145:25
[INFO] [stdout]     |
[INFO] [stdout] 145 |                         fnmfound = true;
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fnm`
[INFO] [stdout]    --> src/token.rs:166:33
[INFO] [stdout]     |
[INFO] [stdout] 166 |                         let mut fnm = String::new();
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_fnm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fnmfound` is never read
[INFO] [stdout]    --> src/token.rs:173:25
[INFO] [stdout]     |
[INFO] [stdout] 173 |                         fnmfound = true;
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fnm`
[INFO] [stdout]    --> src/token.rs:194:33
[INFO] [stdout]     |
[INFO] [stdout] 194 |                         let mut fnm = String::new();
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_fnm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/token.rs:86:29
[INFO] [stdout]    |
[INFO] [stdout] 86 |                         let mut fnm = String::new();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/token.rs:110:29
[INFO] [stdout]     |
[INFO] [stdout] 110 |                         let mut fnm = String::new();
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/token.rs:138:29
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         let mut fnm = String::new();
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/token.rs:166:29
[INFO] [stdout]     |
[INFO] [stdout] 166 |                         let mut fnm = String::new();
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/token.rs:194:29
[INFO] [stdout]     |
[INFO] [stdout] 194 |                         let mut fnm = String::new();
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `numscount` is assigned to, but never used
[INFO] [stdout]    --> src/token.rs:339:13
[INFO] [stdout]     |
[INFO] [stdout] 339 |     let mut numscount = 7;
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_numscount` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kword`
[INFO] [stdout]    --> src/token.rs:367:21
[INFO] [stdout]     |
[INFO] [stdout] 367 |                 let kword = token.clone();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_kword`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `numscount` is never read
[INFO] [stdout]    --> src/token.rs:371:21
[INFO] [stdout]     |
[INFO] [stdout] 371 |                     numscount = 1;
[INFO] [stdout]     |                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/token.rs:270:12
[INFO] [stdout]     |
[INFO] [stdout] 270 |     Stdout(Box<Expression>), 
[INFO] [stdout]     |     ------ ^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 270 |     Stdout(()), 
[INFO] [stdout]     |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]    --> src/token.rs:272:10
[INFO] [stdout]     |
[INFO] [stdout] 272 |     Math(Box<Expression> ,char, Box<Expression>),
[INFO] [stdout]     |     ---- ^^^^^^^^^^^^^^^  ^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 272 |     Math(() ,(), ()),
[INFO] [stdout]     |          ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]    --> src/token.rs:273:16
[INFO] [stdout]     |
[INFO] [stdout] 273 |     Assignment(Box<Expression> ,String),
[INFO] [stdout]     |     ---------- ^^^^^^^^^^^^^^^  ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 273 |     Assignment(() ,()),
[INFO] [stdout]     |                ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]    --> src/token.rs:274:10
[INFO] [stdout]     |
[INFO] [stdout] 274 |     Eqls(Box<Expression>, Box<Expression>),
[INFO] [stdout]     |     ---- ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 274 |     Eqls((), ()),
[INFO] [stdout]     |          ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/token.rs:275:13
[INFO] [stdout]     |
[INFO] [stdout] 275 |     Literal(String),
[INFO] [stdout]     |     ------- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 275 |     Literal(()),
[INFO] [stdout]     |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/token.rs:277:9
[INFO] [stdout]     |
[INFO] [stdout] 277 |     Num(f64),
[INFO] [stdout]     |     --- ^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 277 |     Num(()),
[INFO] [stdout]     |         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/token.rs:278:13
[INFO] [stdout]     |
[INFO] [stdout] 278 |     VarName(String),
[INFO] [stdout]     |     ------- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 278 |     VarName(()),
[INFO] [stdout]     |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/token.rs:279:13
[INFO] [stdout]     |
[INFO] [stdout] 279 |     Vartype(String),
[INFO] [stdout]     |     ------- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are 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] 279 |     Vartype(()),
[INFO] [stdout]     |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ParseError` is never constructed
[INFO] [stdout]    --> src/token.rs:276:5
[INFO] [stdout]     |
[INFO] [stdout] 269 | pub enum Expression{
[INFO] [stdout]     |          ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 276 |     ParseError(),
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Token` instead of cloning the inner type
[INFO] [stdout]    --> src/token.rs:283:44
[INFO] [stdout]     |
[INFO] [stdout] 283 |     let prevel = right.prev_peek().unwrap().clone();
[INFO] [stdout]     |                                            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Token` instead of cloning the inner type
[INFO] [stdout]    --> src/token.rs:284:38
[INFO] [stdout]     |
[INFO] [stdout] 284 |     let nxtel = right.peek().unwrap().clone();
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Token` instead of cloning the inner type
[INFO] [stdout]    --> src/token.rs:361:71
[INFO] [stdout]     |
[INFO] [stdout] 361 |                 if let Token::Word(content) = iterator.peek().unwrap().clone(){
[INFO] [stdout]     |                                                                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "3103350c716f89a8976d80530c972edd453a93b7794d776e6b4067efa2ad4803", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3103350c716f89a8976d80530c972edd453a93b7794d776e6b4067efa2ad4803", kill_on_drop: false }`
[INFO] [stdout] 3103350c716f89a8976d80530c972edd453a93b7794d776e6b4067efa2ad4803