[INFO] cloning repository https://github.com/Verdex/silica
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Verdex/silica" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVerdex%2Fsilica", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVerdex%2Fsilica'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45fb246c5a48a8613ae29376a7d0d892fe5595ab
[INFO] checking Verdex/silica against try#1383df06117fd218068d1f39fd5326256dd4a348 for pr-145181
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVerdex%2Fsilica" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Verdex/silica
[INFO] finished tweaking git repo https://github.com/Verdex/silica
[INFO] tweaked toml for git repo https://github.com/Verdex/silica written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Verdex/silica on toolchain 1383df06117fd218068d1f39fd5326256dd4a348
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1383df06117fd218068d1f39fd5326256dd4a348" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Verdex/silica 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" "+1383df06117fd218068d1f39fd5326256dd4a348" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+1383df06117fd218068d1f39fd5326256dd4a348" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69450f32f7a3f6ca078cea7ad5fcfe45b3ed71707ac460c69b504d352c3e3904
[INFO] running `Command { std: "docker" "start" "-a" "69450f32f7a3f6ca078cea7ad5fcfe45b3ed71707ac460c69b504d352c3e3904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69450f32f7a3f6ca078cea7ad5fcfe45b3ed71707ac460c69b504d352c3e3904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69450f32f7a3f6ca078cea7ad5fcfe45b3ed71707ac460c69b504d352c3e3904", kill_on_drop: false }`
[INFO] [stdout] 69450f32f7a3f6ca078cea7ad5fcfe45b3ed71707ac460c69b504d352c3e3904
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+1383df06117fd218068d1f39fd5326256dd4a348" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b35d7e49901ddc0bb420b4a5bd057a42c9aee5c160823fc2db2fe03785ae64e0
[INFO] running `Command { std: "docker" "start" "-a" "b35d7e49901ddc0bb420b4a5bd057a42c9aee5c160823fc2db2fe03785ae64e0", kill_on_drop: false }`
[INFO] [stderr]     Checking silica v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `Lexeme` is never used
[INFO] [stdout]  --> src/parsing/lexeme.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Lexeme {
[INFO] [stdout]   |          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `start_index` and `end_index` are never used
[INFO] [stdout]   --> src/parsing/lexeme.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Lexeme {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] 29 |     pub fn start_index(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn end_index(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lex` is never used
[INFO] [stdout]  --> src/parsing/lex.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn lex(s : &str) -> Result<Vec<Lexeme>, usize> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Input` is never constructed
[INFO] [stdout]   --> src/parsing/lex.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Input<'a> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `restore_point`, `restore`, `next`, and `peek` are never used
[INFO] [stdout]   --> src/parsing/lex.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl<'a> Input<'a> {
[INFO] [stdout]    | ------------------ methods in this implementation
[INFO] [stdout] 53 |     fn restore_point(&self) -> Peekable<CharIndices<'a>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn restore(&mut self, rp : Peekable<CharIndices<'a>>) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn next(&mut self) -> Option<(usize, char)> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     fn peek(&mut self) -> Option<&(usize, char)> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Lexer` is never used
[INFO] [stdout]   --> src/parsing/lex.rs:70:7
[INFO] [stdout]    |
[INFO] [stdout] 70 | trait Lexer {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `JunkLexer` is never constructed
[INFO] [stdout]   --> src/parsing/lex.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | struct JunkLexer {}
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SymbolLexer` is never constructed
[INFO] [stdout]    --> src/parsing/lex.rs:137:8
[INFO] [stdout]     |
[INFO] [stdout] 137 | struct SymbolLexer {}
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BoolLexer` is never constructed
[INFO] [stdout]    --> src/parsing/lex.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 181 | struct BoolLexer {}
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NumberLexer` is never constructed
[INFO] [stdout]    --> src/parsing/lex.rs:204:8
[INFO] [stdout]     |
[INFO] [stdout] 204 | struct NumberLexer {}
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StringLexer` is never constructed
[INFO] [stdout]    --> src/parsing/lex.rs:263:8
[INFO] [stdout]     |
[INFO] [stdout] 263 | struct StringLexer {}
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `KeywordLexer` is never constructed
[INFO] [stdout]    --> src/parsing/lex.rs:311:8
[INFO] [stdout]     |
[INFO] [stdout] 311 | struct KeywordLexer {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PunctLexer` is never constructed
[INFO] [stdout]    --> src/parsing/lex.rs:337:8
[INFO] [stdout]     |
[INFO] [stdout] 337 | struct PunctLexer<const X : usize>{
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Parser` is never used
[INFO] [stdout]  --> src/parsing/parser.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait Parser {
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Ast` is never used
[INFO] [stdout]  --> src/parsing/ast.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Ast {
[INFO] [stdout]   |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/parsing/lexeme.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout]  3 | pub enum Lexeme {
[INFO] [stdout]    |          ------ variants in this enum
[INFO] [stdout]  4 |     Junk,
[INFO] [stdout]  5 |     RParen,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]  6 |     LParen,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]  7 |     RAngle,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]  8 |     LAngle,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]  9 |     RCurl,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 10 |     LCurl,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 11 |     RightDoubleArrow,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 12 |     OrBar,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 13 |     Fun,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 14 |     Let,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 15 |     Data,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 16 |     Spec,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     SemiColon,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 18 |     Comma,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 19 |     Equal,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Lexeme` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `start_index` and `end_index` are never used
[INFO] [stdout]   --> src/parsing/lexeme.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Lexeme {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] 29 |     pub fn start_index(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn end_index(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lex` is never used
[INFO] [stdout]  --> src/parsing/lex.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn lex(s : &str) -> Result<Vec<Lexeme>, usize> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `KeywordLexer` is never constructed
[INFO] [stdout]    --> src/parsing/lex.rs:311:8
[INFO] [stdout]     |
[INFO] [stdout] 311 | struct KeywordLexer {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PunctLexer` is never constructed
[INFO] [stdout]    --> src/parsing/lex.rs:337:8
[INFO] [stdout]     |
[INFO] [stdout] 337 | struct PunctLexer<const X : usize>{
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Parser` is never used
[INFO] [stdout]  --> src/parsing/parser.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait Parser {
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Ast` is never used
[INFO] [stdout]  --> src/parsing/ast.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Ast {
[INFO] [stdout]   |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "b35d7e49901ddc0bb420b4a5bd057a42c9aee5c160823fc2db2fe03785ae64e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b35d7e49901ddc0bb420b4a5bd057a42c9aee5c160823fc2db2fe03785ae64e0", kill_on_drop: false }`
[INFO] [stdout] b35d7e49901ddc0bb420b4a5bd057a42c9aee5c160823fc2db2fe03785ae64e0