Dec 19 12:52:12.840 INFO checking mcast/markdown-chapterise against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 12:52:12.840 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:52:13.151 INFO [stdout] 33bfb9f09cb34e3bee10b4990ff4c4140834dedc6082c506182b04be9bba6dfe
Dec 19 12:52:13.153 INFO running `"docker" "start" "-a" "33bfb9f09cb34e3bee10b4990ff4c4140834dedc6082c506182b04be9bba6dfe"`
Dec 19 12:52:13.702 INFO [stderr]     Checking markdown-chapterise v0.0.1 (/opt/crater/workdir)
Dec 19 12:52:13.817 INFO [stderr] warning: unused import: `std::cell::RefCell`
Dec 19 12:52:13.817 INFO [stderr]  --> src/mdstream.rs:1:5
Dec 19 12:52:13.817 INFO [stderr]   |
Dec 19 12:52:13.817 INFO [stderr] 1 | use std::cell::RefCell;
Dec 19 12:52:13.817 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 19 12:52:13.817 INFO [stderr]   |
Dec 19 12:52:13.817 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:52:13.817 INFO [stderr] 
Dec 19 12:52:13.818 INFO [stderr] warning: unused import: `std::iter::FilterMap`
Dec 19 12:52:13.818 INFO [stderr]  --> src/mdstream.rs:5:5
Dec 19 12:52:13.818 INFO [stderr]   |
Dec 19 12:52:13.818 INFO [stderr] 5 | use std::iter::FilterMap;
Dec 19 12:52:13.818 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 12:52:13.818 INFO [stderr] 
Dec 19 12:52:13.818 INFO [stderr] warning: unused import: `std::io::Lines`
Dec 19 12:52:13.818 INFO [stderr]  --> src/mdstream.rs:6:5
Dec 19 12:52:13.836 INFO [stderr]   |
Dec 19 12:52:13.836 INFO [stderr] 6 | use std::io::Lines;
Dec 19 12:52:13.836 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 19 12:52:13.836 INFO [stderr] 
Dec 19 12:52:13.836 INFO [stderr] warning: unused import: `std::io::BufReader`
Dec 19 12:52:13.836 INFO [stderr]  --> src/mdstream.rs:7:5
Dec 19 12:52:13.836 INFO [stderr]   |
Dec 19 12:52:13.836 INFO [stderr] 7 | use std::io::BufReader;
Dec 19 12:52:13.836 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 19 12:52:13.836 INFO [stderr] 
Dec 19 12:52:13.836 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 12:52:13.836 INFO [stderr]  --> src/mdstream.rs:8:5
Dec 19 12:52:13.836 INFO [stderr]   |
Dec 19 12:52:13.836 INFO [stderr] 8 | use std::fs::File;
Dec 19 12:52:13.836 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 12:52:13.836 INFO [stderr] 
Dec 19 12:52:13.854 INFO [stderr] warning: unused import: `std::cell::RefCell`
Dec 19 12:52:13.854 INFO [stderr]  --> src/mdstream.rs:1:5
Dec 19 12:52:13.854 INFO [stderr]   |
Dec 19 12:52:13.854 INFO [stderr] 1 | use std::cell::RefCell;
Dec 19 12:52:13.854 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 19 12:52:13.854 INFO [stderr]   |
Dec 19 12:52:13.854 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:52:13.854 INFO [stderr] 
Dec 19 12:52:13.854 INFO [stderr] warning: unused import: `std::iter::FilterMap`
Dec 19 12:52:13.854 INFO [stderr]  --> src/mdstream.rs:5:5
Dec 19 12:52:13.854 INFO [stderr]   |
Dec 19 12:52:13.854 INFO [stderr] 5 | use std::iter::FilterMap;
Dec 19 12:52:13.854 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 12:52:13.854 INFO [stderr] 
Dec 19 12:52:13.854 INFO [stderr] warning: unused import: `std::io::Lines`
Dec 19 12:52:13.854 INFO [stderr]  --> src/mdstream.rs:6:5
Dec 19 12:52:13.854 INFO [stderr]   |
Dec 19 12:52:13.854 INFO [stderr] 6 | use std::io::Lines;
Dec 19 12:52:13.854 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 19 12:52:13.854 INFO [stderr] 
Dec 19 12:52:13.855 INFO [stderr] warning: unused import: `std::io::BufReader`
Dec 19 12:52:13.855 INFO [stderr]  --> src/mdstream.rs:7:5
Dec 19 12:52:13.855 INFO [stderr]   |
Dec 19 12:52:13.855 INFO [stderr] 7 | use std::io::BufReader;
Dec 19 12:52:13.855 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 19 12:52:13.855 INFO [stderr] 
Dec 19 12:52:13.855 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 12:52:13.855 INFO [stderr]  --> src/mdstream.rs:8:5
Dec 19 12:52:13.855 INFO [stderr]   |
Dec 19 12:52:13.855 INFO [stderr] 8 | use std::fs::File;
Dec 19 12:52:13.855 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 12:52:13.855 INFO [stderr] 
Dec 19 12:52:13.892 INFO [stderr] warning: variable does not need to be mutable
Dec 19 12:52:13.892 INFO [stderr]   --> src/mdstream.rs:45:13
Dec 19 12:52:13.892 INFO [stderr]    |
Dec 19 12:52:13.892 INFO [stderr] 45 |         let mut lines = self.input.deref_mut();
Dec 19 12:52:13.892 INFO [stderr]    |             ----^^^^^
Dec 19 12:52:13.892 INFO [stderr]    |             |
Dec 19 12:52:13.892 INFO [stderr]    |             help: remove this `mut`
Dec 19 12:52:13.892 INFO [stderr]    |
Dec 19 12:52:13.892 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 12:52:13.892 INFO [stderr] 
Dec 19 12:52:13.892 INFO [stderr] warning: method is never used: `new`
Dec 19 12:52:13.892 INFO [stderr]   --> src/mdstream.rs:33:5
Dec 19 12:52:13.892 INFO [stderr]    |
Dec 19 12:52:13.892 INFO [stderr] 33 |     pub fn new(lines: Box<Iterator<Item=String>>) -> MarkdownStream
Dec 19 12:52:13.892 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:52:13.892 INFO [stderr]    |
Dec 19 12:52:13.892 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 12:52:13.892 INFO [stderr] 
Dec 19 12:52:13.944 INFO [stderr] warning: unused variable: `obj`
Dec 19 12:52:13.944 INFO [stderr]   --> src/main.rs:75:9
Dec 19 12:52:13.944 INFO [stderr]    |
Dec 19 12:52:13.944 INFO [stderr] 75 |     let obj = "bar";
Dec 19 12:52:13.944 INFO [stderr]    |         ^^^ help: consider using `_obj` instead
Dec 19 12:52:13.944 INFO [stderr]    |
Dec 19 12:52:13.944 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:52:13.944 INFO [stderr] 
Dec 19 12:52:13.978 INFO [stderr] warning: variable does not need to be mutable
Dec 19 12:52:13.978 INFO [stderr]   --> src/mdstream.rs:45:13
Dec 19 12:52:13.978 INFO [stderr]    |
Dec 19 12:52:13.978 INFO [stderr] 45 |         let mut lines = self.input.deref_mut();
Dec 19 12:52:13.978 INFO [stderr]    |             ----^^^^^
Dec 19 12:52:13.978 INFO [stderr]    |             |
Dec 19 12:52:13.978 INFO [stderr]    |             help: remove this `mut`
Dec 19 12:52:13.978 INFO [stderr]    |
Dec 19 12:52:13.978 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 12:52:13.978 INFO [stderr] 
Dec 19 12:52:14.008 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
Dec 19 12:52:14.279 INFO running `"docker" "inspect" "33bfb9f09cb34e3bee10b4990ff4c4140834dedc6082c506182b04be9bba6dfe"`
Dec 19 12:52:14.357 INFO running `"docker" "rm" "-f" "33bfb9f09cb34e3bee10b4990ff4c4140834dedc6082c506182b04be9bba6dfe"`
Dec 19 12:52:14.449 INFO [stdout] 33bfb9f09cb34e3bee10b4990ff4c4140834dedc6082c506182b04be9bba6dfe