[INFO] fetching crate lexington 0.3.0...
[INFO] checking lexington-0.3.0 against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] extracting crate lexington 0.3.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate lexington 0.3.0
[INFO] finished tweaking crates.io crate lexington 0.3.0
[INFO] tweaked toml for crates.io crate lexington 0.3.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lexington 0.3.0 on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f78711dbdfef3304eb0a7c72fdc16f854aad3c26fae9bba22aedef6fbf9a8b6
[INFO] running `Command { std: "docker" "start" "-a" "8f78711dbdfef3304eb0a7c72fdc16f854aad3c26fae9bba22aedef6fbf9a8b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f78711dbdfef3304eb0a7c72fdc16f854aad3c26fae9bba22aedef6fbf9a8b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f78711dbdfef3304eb0a7c72fdc16f854aad3c26fae9bba22aedef6fbf9a8b6", kill_on_drop: false }`
[INFO] [stdout] 8f78711dbdfef3304eb0a7c72fdc16f854aad3c26fae9bba22aedef6fbf9a8b6
[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" "-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" "+507271bc119683008ec719ecee48814e8ac86c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08af567880aba0b9338e2c5675d470b204dfe19988c4f8f6ac36c6dede7300c6
[INFO] running `Command { std: "docker" "start" "-a" "08af567880aba0b9338e2c5675d470b204dfe19988c4f8f6ac36c6dede7300c6", kill_on_drop: false }`
[INFO] [stderr]     Checking lexington v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> tests/lisp.rs:1:49
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lexington::{Any,Lexer,Match,Matcher,Scanner,Token,Within};
[INFO] [stdout]   |                                                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lisp.rs:55:17
[INFO] [stdout]     |
[INFO] [stdout]  55 |             let mut v = Vec::new();
[INFO] [stdout]     |                 ----^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 111 |     check_ok("()",list![]);
[INFO] [stdout]     |                   ------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]     = note: this warning originates in the macro `list` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> tests/lisp.rs:21:40
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn parse<'a>(input: &'a str) -> Result<SExp,()> {    
[INFO] [stdout]    |                      --                ^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn parse<'a>(input: &'a str) -> Result<SExp<'a>,()> {    
[INFO] [stdout]    |                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LogicalNegation` is never used
[INFO] [stdout]   --> tests/logic.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | trait LogicalNegation {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `not` is never used
[INFO] [stdout]    --> tests/logic.rs:173:12
[INFO] [stdout]     |
[INFO] [stdout] 111 | impl Formula {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 173 |     pub fn not(&mut self) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `LogicalNot` is never constructed
[INFO] [stdout]    --> tests/logic.rs:328:5
[INFO] [stdout]     |
[INFO] [stdout] 319 | enum Kind {
[INFO] [stdout]     |      ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 328 |     LogicalNot,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Kind` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "08af567880aba0b9338e2c5675d470b204dfe19988c4f8f6ac36c6dede7300c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08af567880aba0b9338e2c5675d470b204dfe19988c4f8f6ac36c6dede7300c6", kill_on_drop: false }`
[INFO] [stdout] 08af567880aba0b9338e2c5675d470b204dfe19988c4f8f6ac36c6dede7300c6
