[INFO] updating cached repository mcast/markdown-chapterise
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mcast/markdown-chapterise
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mcast/markdown-chapterise" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/mcast/markdown-chapterise"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/mcast/markdown-chapterise'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mcast/markdown-chapterise" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/mcast/markdown-chapterise"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/mcast/markdown-chapterise'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 926d91dc2a2179caeb61f32d4e76de4ea5b1eebd
[INFO] sha for GitHub repo mcast/markdown-chapterise: 926d91dc2a2179caeb61f32d4e76de4ea5b1eebd
[INFO] validating manifest of mcast/markdown-chapterise 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 mcast/markdown-chapterise 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 mcast/markdown-chapterise
[INFO] finished frobbing mcast/markdown-chapterise
[INFO] frobbed toml for mcast/markdown-chapterise written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/mcast/markdown-chapterise/Cargo.toml
[INFO] started frobbing mcast/markdown-chapterise
[INFO] finished frobbing mcast/markdown-chapterise
[INFO] frobbed toml for mcast/markdown-chapterise written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/mcast/markdown-chapterise/Cargo.toml
[INFO] crate mcast/markdown-chapterise 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] checking mcast/markdown-chapterise against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-1/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/mcast/markdown-chapterise:/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] 4ac551dfde60643a851d67b13cab1c6cdd344f75dc866c3d09a70b7541172230
[INFO] running `"docker" "start" "-a" "4ac551dfde60643a851d67b13cab1c6cdd344f75dc866c3d09a70b7541172230"`
[INFO] [stderr]     Checking markdown-chapterise v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/mdstream.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::FilterMap`
[INFO] [stderr]  --> src/mdstream.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::iter::FilterMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Lines`
[INFO] [stderr]  --> src/mdstream.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::Lines;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufReader`
[INFO] [stderr]  --> src/mdstream.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::BufReader;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/mdstream.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mdstream.rs:16:29
[INFO] [stderr]    |
[INFO] [stderr] 16 |     input: Box<Peekable<Box<Iterator<Item=String>>>>,
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=String>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mdstream.rs:25:30
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn new_io(lines: Box<Iterator<Item=Result<String>>>) -> MarkdownStream
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Result<String>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mdstream.rs:27:24
[INFO] [stderr]    |
[INFO] [stderr] 27 |         let lines: Box<Iterator<Item=String>> =
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=String>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mdstream.rs:33:27
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn new(lines: Box<Iterator<Item=String>>) -> MarkdownStream
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=String>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/mdstream.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::FilterMap`
[INFO] [stderr]  --> src/mdstream.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::iter::FilterMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Lines`
[INFO] [stderr]  --> src/mdstream.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::Lines;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufReader`
[INFO] [stderr]  --> src/mdstream.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::BufReader;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/mdstream.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mdstream.rs:16:29
[INFO] [stderr]    |
[INFO] [stderr] 16 |     input: Box<Peekable<Box<Iterator<Item=String>>>>,
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=String>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mdstream.rs:25:30
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn new_io(lines: Box<Iterator<Item=Result<String>>>) -> MarkdownStream
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Result<String>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mdstream.rs:27:24
[INFO] [stderr]    |
[INFO] [stderr] 27 |         let lines: Box<Iterator<Item=String>> =
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=String>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mdstream.rs:33:27
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn new(lines: Box<Iterator<Item=String>>) -> MarkdownStream
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=String>`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/mdstream.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let mut lines = self.input.deref_mut();
[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: method is never used: `new`
[INFO] [stderr]   --> src/mdstream.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn new(lines: Box<Iterator<Item=String>>) -> MarkdownStream
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/main.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let obj = "bar";
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_obj`
[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/mdstream.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let mut lines = self.input.deref_mut();
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "4ac551dfde60643a851d67b13cab1c6cdd344f75dc866c3d09a70b7541172230"`
[INFO] running `"docker" "rm" "-f" "4ac551dfde60643a851d67b13cab1c6cdd344f75dc866c3d09a70b7541172230"`
[INFO] [stdout] 4ac551dfde60643a851d67b13cab1c6cdd344f75dc866c3d09a70b7541172230