[INFO] updating cached repository ilsko/femto
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ilsko/femto
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ilsko/femto" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/ilsko/femto"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/ilsko/femto'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ilsko/femto" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/ilsko/femto"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/ilsko/femto'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7c08ece02c4273a6002d5f92b49233d8661e64df
[INFO] sha for GitHub repo ilsko/femto: 7c08ece02c4273a6002d5f92b49233d8661e64df
[INFO] validating manifest of ilsko/femto on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ilsko/femto on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ilsko/femto
[INFO] finished frobbing ilsko/femto
[INFO] frobbed toml for ilsko/femto written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/ilsko/femto/Cargo.toml
[INFO] started frobbing ilsko/femto
[INFO] finished frobbing ilsko/femto
[INFO] frobbed toml for ilsko/femto written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/ilsko/femto/Cargo.toml
[INFO] crate ilsko/femto already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-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" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking ilsko/femto against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-5/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/ilsko/femto:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5d12c6df5c361e716746120d88e21a6ff5caf35d1b42dd6bfdc9bb4184c8bff5
[INFO] running `"docker" "start" "-a" "5d12c6df5c361e716746120d88e21a6ff5caf35d1b42dd6bfdc9bb4184c8bff5"`
[INFO] [stderr]    Compiling structopt-derive v0.2.16
[INFO] [stderr]     Checking structopt v0.2.16
[INFO] [stderr]     Checking femto v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/text_buffer.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |                ^^^^ help: consider prefixing with an underscore: `_path`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `file`
[INFO] [stderr]  --> src/text_buffer.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     file: File,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `data`
[INFO] [stderr]  --> src/text_buffer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     data: Vec<Segment>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/text_buffer.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn add(&mut self, index: usize, character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]   --> src/text_buffer.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn remove(&mut self, index: usize) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `modify`
[INFO] [stderr]   --> src/text_buffer.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn modify(&mut self, index: usize, new_character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `stdin`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     stdin: R,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/text_buffer.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |                ^^^^ help: consider prefixing with an underscore: `_path`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `file`
[INFO] [stderr]  --> src/text_buffer.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     file: File,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `data`
[INFO] [stderr]  --> src/text_buffer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     data: Vec<Segment>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/text_buffer.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn add(&mut self, index: usize, character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]   --> src/text_buffer.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn remove(&mut self, index: usize) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `modify`
[INFO] [stderr]   --> src/text_buffer.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn modify(&mut self, index: usize, new_character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `stdin`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     stdin: R,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.10s
[INFO] running `"docker" "inspect" "5d12c6df5c361e716746120d88e21a6ff5caf35d1b42dd6bfdc9bb4184c8bff5"`
[INFO] running `"docker" "rm" "-f" "5d12c6df5c361e716746120d88e21a6ff5caf35d1b42dd6bfdc9bb4184c8bff5"`
[INFO] [stdout] 5d12c6df5c361e716746120d88e21a6ff5caf35d1b42dd6bfdc9bb4184c8bff5