[INFO] cloning repository https://github.com/jabcross/yuck
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jabcross/yuck" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjabcross%2Fyuck", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjabcross%2Fyuck'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e68a87a95cfd447c9455c0148d7e9cf75f364e4e
[INFO] checking jabcross/yuck against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjabcross%2Fyuck" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jabcross/yuck on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jabcross/yuck
[INFO] finished tweaking git repo https://github.com/jabcross/yuck
[INFO] tweaked toml for git repo https://github.com/jabcross/yuck written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jabcross/yuck 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex v1.3.1
[INFO] [stderr]   Downloaded aho-corasick v0.7.6
[INFO] [stderr]   Downloaded regex-syntax v0.6.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16745fa8e5404e3ff14cb5f849e09e9c05cb06ce1f4018d70ac5d364c14cc517
[INFO] running `Command { std: "docker" "start" "-a" "16745fa8e5404e3ff14cb5f849e09e9c05cb06ce1f4018d70ac5d364c14cc517", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16745fa8e5404e3ff14cb5f849e09e9c05cb06ce1f4018d70ac5d364c14cc517", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16745fa8e5404e3ff14cb5f849e09e9c05cb06ce1f4018d70ac5d364c14cc517", kill_on_drop: false }`
[INFO] [stdout] 16745fa8e5404e3ff14cb5f849e09e9c05cb06ce1f4018d70ac5d364c14cc517
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5bbea2870697152a8598c834a778e44124c2c3955d23a97559d54356add55acc
[INFO] running `Command { std: "docker" "start" "-a" "5bbea2870697152a8598c834a778e44124c2c3955d23a97559d54356add55acc", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking yuck v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::lexer::*`
[INFO] [stdout]  --> src/node.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Match`
[INFO] [stdout]  --> src/lexer.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use regex::{Regex, Match};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/misc.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer::*`
[INFO] [stdout]  --> src/node.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Match`
[INFO] [stdout]  --> src/lexer.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use regex::{Regex, Match};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/misc.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `current_id` is never read
[INFO] [stdout]   --> src/grammar.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut current_id = "";
[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: variable `row` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut row = 0;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_row` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `column` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut column = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_column` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `offset` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let mut offset = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_offset` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_file_symbol` is never used
[INFO] [stdout]  --> src/traits.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Grammar<'source> {
[INFO] [stdout]   |           ------- method in this trait
[INFO] [stdout] 7 |     fn get_productions(&self, id: &'source str)-> &Vec<Vec<&'source str>>;
[INFO] [stdout] 8 |     fn get_file_symbol(&self) -> &'source str;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_type_count` is never used
[INFO] [stdout]   --> src/traits.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait Lexer <'source> {
[INFO] [stdout]    |           ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn get_type_count(&self)->usize;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `source_slice` and `position` are never read
[INFO] [stdout]   --> src/node.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub struct Node<'source, 'code> {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9  |     pub source_slice: Option<&'code str>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 10 |     pub token_count: usize,
[INFO] [stdout] 11 |     pub position: Option<(Mark, Mark)>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` 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: method `print_as_tree` is never used
[INFO] [stdout]   --> src/node.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl <'source, 'code> Node<'source, 'code> {
[INFO] [stdout]    | ------------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn print_as_tree(&self, indent: usize) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pretty_print` is never used
[INFO] [stdout]    --> src/grammar.rs:193:12
[INFO] [stdout]     |
[INFO] [stdout] 13  | impl <'source> SimpleGrammar <'source> {
[INFO] [stdout]     | -------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 193 |     pub fn pretty_print(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/lexer.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct TokenPattern {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 14 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenPattern` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `current_id` is never read
[INFO] [stdout]   --> src/grammar.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut current_id = "";
[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: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `row` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut row = 0;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_row` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `column` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut column = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_column` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `offset` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let mut offset = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_offset` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_file_symbol` is never used
[INFO] [stdout]  --> src/traits.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Grammar<'source> {
[INFO] [stdout]   |           ------- method in this trait
[INFO] [stdout] 7 |     fn get_productions(&self, id: &'source str)-> &Vec<Vec<&'source str>>;
[INFO] [stdout] 8 |     fn get_file_symbol(&self) -> &'source str;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_type_count` is never used
[INFO] [stdout]   --> src/traits.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait Lexer <'source> {
[INFO] [stdout]    |           ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn get_type_count(&self)->usize;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `source_slice` and `position` are never read
[INFO] [stdout]   --> src/node.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub struct Node<'source, 'code> {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9  |     pub source_slice: Option<&'code str>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 10 |     pub token_count: usize,
[INFO] [stdout] 11 |     pub position: Option<(Mark, Mark)>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` 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: method `print_as_tree` is never used
[INFO] [stdout]   --> src/node.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl <'source, 'code> Node<'source, 'code> {
[INFO] [stdout]    | ------------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn print_as_tree(&self, indent: usize) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pretty_print` is never used
[INFO] [stdout]    --> src/grammar.rs:193:12
[INFO] [stdout]     |
[INFO] [stdout] 13  | impl <'source> SimpleGrammar <'source> {
[INFO] [stdout]     | -------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 193 |     pub fn pretty_print(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/lexer.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct TokenPattern {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 14 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenPattern` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.54s
[INFO] running `Command { std: "docker" "inspect" "5bbea2870697152a8598c834a778e44124c2c3955d23a97559d54356add55acc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bbea2870697152a8598c834a778e44124c2c3955d23a97559d54356add55acc", kill_on_drop: false }`
[INFO] [stdout] 5bbea2870697152a8598c834a778e44124c2c3955d23a97559d54356add55acc
[INFO] checking jabcross/yuck against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjabcross%2Fyuck" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jabcross/yuck on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jabcross/yuck
[INFO] finished tweaking git repo https://github.com/jabcross/yuck
[INFO] tweaked toml for git repo https://github.com/jabcross/yuck written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jabcross/yuck 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82de43dd8a330eb759b86eba9280d12483d48a71429a7c2897ac2462f821067d
[INFO] running `Command { std: "docker" "start" "-a" "82de43dd8a330eb759b86eba9280d12483d48a71429a7c2897ac2462f821067d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82de43dd8a330eb759b86eba9280d12483d48a71429a7c2897ac2462f821067d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82de43dd8a330eb759b86eba9280d12483d48a71429a7c2897ac2462f821067d", kill_on_drop: false }`
[INFO] [stdout] 82de43dd8a330eb759b86eba9280d12483d48a71429a7c2897ac2462f821067d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4bfc3564e92b6dfc782e36c56a67c135a8a422eb96de62940222bfec61fa56cc
[INFO] running `Command { std: "docker" "start" "-a" "4bfc3564e92b6dfc782e36c56a67c135a8a422eb96de62940222bfec61fa56cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking yuck v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::lexer::*`
[INFO] [stdout]  --> src/node.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Match`
[INFO] [stdout]  --> src/lexer.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use regex::{Regex, Match};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/misc.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer::*`
[INFO] [stdout]  --> src/node.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Match`
[INFO] [stdout]  --> src/lexer.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use regex::{Regex, Match};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/misc.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `current_id` is never read
[INFO] [stdout]   --> src/grammar.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut current_id = "";
[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 `current_id` is never read
[INFO] [stdout]   --> src/grammar.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut current_id = "";
[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: variable `row` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut row = 0;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_row` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `row` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut row = 0;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_row` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `column` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut column = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_column` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `offset` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let mut offset = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_offset` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `column` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut column = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_column` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `offset` is assigned to, but never used
[INFO] [stdout]   --> src/lexer.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let mut offset = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_offset` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_file_symbol` is never used
[INFO] [stdout]  --> src/traits.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Grammar<'source> {
[INFO] [stdout]   |           ------- method in this trait
[INFO] [stdout] 7 |     fn get_productions(&self, id: &'source str)-> &Vec<Vec<&'source str>>;
[INFO] [stdout] 8 |     fn get_file_symbol(&self) -> &'source str;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_file_symbol` is never used
[INFO] [stdout]  --> src/traits.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Grammar<'source> {
[INFO] [stdout]   |           ------- method in this trait
[INFO] [stdout] 7 |     fn get_productions(&self, id: &'source str)-> &Vec<Vec<&'source str>>;
[INFO] [stdout] 8 |     fn get_file_symbol(&self) -> &'source str;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_type_count` is never used
[INFO] [stdout]   --> src/traits.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait Lexer <'source> {
[INFO] [stdout]    |           ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn get_type_count(&self)->usize;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_type_count` is never used
[INFO] [stdout]   --> src/traits.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait Lexer <'source> {
[INFO] [stdout]    |           ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn get_type_count(&self)->usize;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `source_slice` and `position` are never read
[INFO] [stdout]   --> src/node.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub struct Node<'source, 'code> {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9  |     pub source_slice: Option<&'code str>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 10 |     pub token_count: usize,
[INFO] [stdout] 11 |     pub position: Option<(Mark, Mark)>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` 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: fields `source_slice` and `position` are never read
[INFO] [stdout]   --> src/node.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub struct Node<'source, 'code> {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9  |     pub source_slice: Option<&'code str>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 10 |     pub token_count: usize,
[INFO] [stdout] 11 |     pub position: Option<(Mark, Mark)>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` 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: method `print_as_tree` is never used
[INFO] [stdout]   --> src/node.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl <'source, 'code> Node<'source, 'code> {
[INFO] [stdout]    | ------------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn print_as_tree(&self, indent: usize) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_as_tree` is never used
[INFO] [stdout]   --> src/node.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl <'source, 'code> Node<'source, 'code> {
[INFO] [stdout]    | ------------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn print_as_tree(&self, indent: usize) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pretty_print` is never used
[INFO] [stdout]    --> src/grammar.rs:193:12
[INFO] [stdout]     |
[INFO] [stdout] 13  | impl <'source> SimpleGrammar <'source> {
[INFO] [stdout]     | -------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 193 |     pub fn pretty_print(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pretty_print` is never used
[INFO] [stdout]    --> src/grammar.rs:193:12
[INFO] [stdout]     |
[INFO] [stdout] 13  | impl <'source> SimpleGrammar <'source> {
[INFO] [stdout]     | -------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 193 |     pub fn pretty_print(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/lexer.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct TokenPattern {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 14 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenPattern` 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 `name` is never read
[INFO] [stdout]   --> src/lexer.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct TokenPattern {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 14 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenPattern` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.26s
[INFO] running `Command { std: "docker" "inspect" "4bfc3564e92b6dfc782e36c56a67c135a8a422eb96de62940222bfec61fa56cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bfc3564e92b6dfc782e36c56a67c135a8a422eb96de62940222bfec61fa56cc", kill_on_drop: false }`
[INFO] [stdout] 4bfc3564e92b6dfc782e36c56a67c135a8a422eb96de62940222bfec61fa56cc