[INFO] updating cached repository TimSimmons/colomy
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/TimSimmons/colomy
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/TimSimmons/colomy" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/TimSimmons/colomy"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/TimSimmons/colomy'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/TimSimmons/colomy" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/TimSimmons/colomy"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/TimSimmons/colomy'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0f59989fd3fb7a586e016c0ddffba0ff56369a3b
[INFO] sha for GitHub repo TimSimmons/colomy: 0f59989fd3fb7a586e016c0ddffba0ff56369a3b
[INFO] validating manifest of TimSimmons/colomy on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of TimSimmons/colomy on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing TimSimmons/colomy
[INFO] finished frobbing TimSimmons/colomy
[INFO] frobbed toml for TimSimmons/colomy written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/TimSimmons/colomy/Cargo.toml
[INFO] started frobbing TimSimmons/colomy
[INFO] finished frobbing TimSimmons/colomy
[INFO] frobbed toml for TimSimmons/colomy written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/TimSimmons/colomy/Cargo.toml
[INFO] crate TimSimmons/colomy already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking TimSimmons/colomy against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-4/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/TimSimmons/colomy:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7f0dda9c609de99b7926c178b802a8432153d68bfeec8493eaf12e78ae2baca5
[INFO] running `"docker" "start" "-a" "7f0dda9c609de99b7926c178b802a8432153d68bfeec8493eaf12e78ae2baca5"`
[INFO] [stderr]     Checking colomy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::BufRead`
[INFO] [stderr]  --> src/index.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::BufRead;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/index.rs:79:13
[INFO] [stderr]    |
[INFO] [stderr] 79 |         let mut f = OpenOptions::new().read(true).open(&self.column_name)?;
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/index.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let mut reader = BufReader::new(f);
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Str`
[INFO] [stderr]   --> src/index.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Str,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Number`
[INFO] [stderr]   --> src/index.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Number,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bool`
[INFO] [stderr]   --> src/index.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Bool,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `INDEX_FILE_PATH`
[INFO] [stderr]   --> src/index.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | const INDEX_FILE_PATH: &str = "./";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Index`
[INFO] [stderr]   --> src/index.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | struct Index {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/index.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 | /     pub fn new(
[INFO] [stderr] 39 | |         field_name: &str,
[INFO] [stderr] 40 | |         content_type: ColumnType,
[INFO] [stderr] 41 | |         first_value: Value,
[INFO] [stderr] ...  |
[INFO] [stderr] 55 | |         Ok(i)
[INFO] [stderr] 56 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `open_index_file`
[INFO] [stderr]   --> src/index.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn open_index_file(column_name: &String) -> std::io::Result<File> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/index.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn write(&mut self, id: i32, value: Value) -> Result<(), IndexError> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_reader`
[INFO] [stderr]   --> src/index.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub fn get_reader(&mut self) -> Result<BufReader<File>, IndexError> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes_read`
[INFO] [stderr]    --> src/index.rs:150:13
[INFO] [stderr]     |
[INFO] [stderr] 150 |         let bytes_read = r.read_line(&mut s);
[INFO] [stderr]     |             ^^^^^^^^^^ help: consider prefixing with an underscore: `_bytes_read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/index.rs:79:13
[INFO] [stderr]    |
[INFO] [stderr] 79 |         let mut f = OpenOptions::new().read(true).open(&self.column_name)?;
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/index.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let mut reader = BufReader::new(f);
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `INDEX_FILE_PATH`
[INFO] [stderr]   --> src/index.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | const INDEX_FILE_PATH: &str = "./";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.70s
[INFO] running `"docker" "inspect" "7f0dda9c609de99b7926c178b802a8432153d68bfeec8493eaf12e78ae2baca5"`
[INFO] running `"docker" "rm" "-f" "7f0dda9c609de99b7926c178b802a8432153d68bfeec8493eaf12e78ae2baca5"`
[INFO] [stdout] 7f0dda9c609de99b7926c178b802a8432153d68bfeec8493eaf12e78ae2baca5