[INFO] fetching crate elmx 0.1.0...
[INFO] checking elmx-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate elmx 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate elmx 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate elmx 0.1.0
[INFO] tweaked toml for crates.io crate elmx 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate elmx 0.1.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate elmx 0.1.0 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8bde5e35cc84c1fc68272316d397ca2b1907f6bd39038e1eae4575720c0da944
[INFO] running `Command { std: "docker" "start" "-a" "8bde5e35cc84c1fc68272316d397ca2b1907f6bd39038e1eae4575720c0da944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bde5e35cc84c1fc68272316d397ca2b1907f6bd39038e1eae4575720c0da944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bde5e35cc84c1fc68272316d397ca2b1907f6bd39038e1eae4575720c0da944", kill_on_drop: false }`
[INFO] [stdout] 8bde5e35cc84c1fc68272316d397ca2b1907f6bd39038e1eae4575720c0da944
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2aee99787c6ea6700a7cc5a6788daffa813705000497089ad3842e7fbd3c0eb5
[INFO] running `Command { std: "docker" "start" "-a" "2aee99787c6ea6700a7cc5a6788daffa813705000497089ad3842e7fbd3c0eb5", kill_on_drop: false }`
[INFO] [stderr]     Checking elmx v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `peekable` and `current` are never read
[INFO] [stdout]   --> src/parser/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Parser<'a> {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 10 |     peekable: Peekable<Lexer<'a>>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 11 |     current: Option<Token<'a>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `exprs` is never read
[INFO] [stdout]   --> src/parser/mod.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Ast {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] 28 |     exprs: Vec<Expr>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `peekable` and `current` are never read
[INFO] [stdout]   --> src/parser/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Parser<'a> {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 10 |     peekable: Peekable<Lexer<'a>>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 11 |     current: Option<Token<'a>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `exprs` is never read
[INFO] [stdout]   --> src/parser/mod.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Ast {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] 28 |     exprs: Vec<Expr>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]  --> tests/lexer.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn lex(input: &str) -> Vec<Token> {
[INFO] [stdout]   |               ^^^^         ----- the lifetime gets resolved as `'_`
[INFO] [stdout]   |               |
[INFO] [stdout]   |               this lifetime flows to the output
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn lex(input: &str) -> Vec<Token<'_>> {
[INFO] [stdout]   |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "2aee99787c6ea6700a7cc5a6788daffa813705000497089ad3842e7fbd3c0eb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2aee99787c6ea6700a7cc5a6788daffa813705000497089ad3842e7fbd3c0eb5", kill_on_drop: false }`
[INFO] [stdout] 2aee99787c6ea6700a7cc5a6788daffa813705000497089ad3842e7fbd3c0eb5