[INFO] updating cached repository SunDoge/prettytoml
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/SunDoge/prettytoml
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/SunDoge/prettytoml" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/SunDoge/prettytoml"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/SunDoge/prettytoml'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/SunDoge/prettytoml" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/SunDoge/prettytoml"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/SunDoge/prettytoml'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 09210d808548a4b104c28f4de22ac50ad2d037fe
[INFO] sha for GitHub repo SunDoge/prettytoml: 09210d808548a4b104c28f4de22ac50ad2d037fe
[INFO] validating manifest of SunDoge/prettytoml on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of SunDoge/prettytoml on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing SunDoge/prettytoml
[INFO] finished frobbing SunDoge/prettytoml
[INFO] frobbed toml for SunDoge/prettytoml written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/SunDoge/prettytoml/Cargo.toml
[INFO] started frobbing SunDoge/prettytoml
[INFO] finished frobbing SunDoge/prettytoml
[INFO] frobbed toml for SunDoge/prettytoml written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/SunDoge/prettytoml/Cargo.toml
[INFO] crate SunDoge/prettytoml already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking SunDoge/prettytoml against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-7/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/SunDoge/prettytoml:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d817b732671965cce53b6b89b12ecb4f4c560569edd06175c9f2ab39ae2d8dee
[INFO] running `"docker" "start" "-a" "d817b732671965cce53b6b89b12ecb4f4c560569edd06175c9f2ab39ae2d8dee"`
[INFO] [stderr]     Checking memchr v2.1.0
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]     Checking regex v1.0.5
[INFO] [stderr]     Checking prettytoml v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `crate::tokens::*`
[INFO] [stderr]    --> src/lexer/mod.rs:118:9
[INFO] [stderr]     |
[INFO] [stderr] 118 |     use crate::tokens::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token_stream`
[INFO] [stderr]   --> src/parser/mod.rs:12:23
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn parse_token_stream(token_stream: TokenStream) {}
[INFO] [stderr]    |                       ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_token_stream`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token_stream`
[INFO] [stderr]  --> src/parser/parser.rs:3:27
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn toml_file_elements(token_stream: TokenStream) -> Result<TokenStream, String> {
[INFO] [stderr]   |                           ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_token_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token_stream`
[INFO] [stderr]   --> src/parser/mod.rs:12:23
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn parse_token_stream(token_stream: TokenStream) {}
[INFO] [stderr]    |                       ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_token_stream`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token_stream`
[INFO] [stderr]  --> src/parser/parser.rs:3:27
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn toml_file_elements(token_stream: TokenStream) -> Result<TokenStream, String> {
[INFO] [stderr]   |                           ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_token_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `toml_file_elements`
[INFO] [stderr]  --> src/parser/parser.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn toml_file_elements(token_stream: TokenStream) -> Result<TokenStream, String> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `head_index`
[INFO] [stderr]  --> src/parser/tokenstream.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     head_index: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `tokens`
[INFO] [stderr]  --> src/parser/tokenstream.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     tokens: &'a Vec<Token>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `head`
[INFO] [stderr]   --> src/parser/tokenstream.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn head(&self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `tail`
[INFO] [stderr]   --> src/parser/tokenstream.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn tail(&self) -> TokenStream {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `offset`
[INFO] [stderr]   --> src/parser/tokenstream.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn offset(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `at_end`
[INFO] [stderr]   --> src/parser/tokenstream.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn at_end(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/parser/tokenstream.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Capture`
[INFO] [stderr]  --> src/parser/recdesc.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Capture<'a> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/parser/recdesc.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(token_stream: TokenStream) -> Capture {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pending_tokens`
[INFO] [stderr]   --> src/parser/recdesc.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn pending_tokens(&self) -> &TokenStream {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `toml_file_elements`
[INFO] [stderr]  --> src/parser/parser.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn toml_file_elements(token_stream: TokenStream) -> Result<TokenStream, String> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `head_index`
[INFO] [stderr]  --> src/parser/tokenstream.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     head_index: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `tokens`
[INFO] [stderr]  --> src/parser/tokenstream.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     tokens: &'a Vec<Token>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `head`
[INFO] [stderr]   --> src/parser/tokenstream.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn head(&self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `tail`
[INFO] [stderr]   --> src/parser/tokenstream.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn tail(&self) -> TokenStream {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `offset`
[INFO] [stderr]   --> src/parser/tokenstream.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn offset(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `at_end`
[INFO] [stderr]   --> src/parser/tokenstream.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn at_end(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/parser/tokenstream.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Capture`
[INFO] [stderr]  --> src/parser/recdesc.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Capture<'a> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/parser/recdesc.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(token_stream: TokenStream) -> Capture {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pending_tokens`
[INFO] [stderr]   --> src/parser/recdesc.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn pending_tokens(&self) -> &TokenStream {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.46s
[INFO] running `"docker" "inspect" "d817b732671965cce53b6b89b12ecb4f4c560569edd06175c9f2ab39ae2d8dee"`
[INFO] running `"docker" "rm" "-f" "d817b732671965cce53b6b89b12ecb4f4c560569edd06175c9f2ab39ae2d8dee"`
[INFO] [stdout] d817b732671965cce53b6b89b12ecb4f4c560569edd06175c9f2ab39ae2d8dee