Dec 19 22:25:55.653 INFO checking Peter-Van-Drunen/readable against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 22:25:55.653 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/Peter-Van-Drunen/readable:/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 22:25:56.080 INFO [stdout] 6e3f76a9715a105ef54c8e5387cd8575e02278e7b3710f05eaa5d1ce67a9f01e
Dec 19 22:25:56.088 INFO running `"docker" "start" "-a" "6e3f76a9715a105ef54c8e5387cd8575e02278e7b3710f05eaa5d1ce67a9f01e"`
Dec 19 22:25:56.956 INFO [stderr]     Checking readable v0.1.0 (/opt/crater/workdir)
Dec 19 22:25:57.352 INFO [stderr] warning: value assigned to `op_node` is never read
Dec 19 22:25:57.352 INFO [stderr]    --> src/main.rs:240:21
Dec 19 22:25:57.352 INFO [stderr]     |
Dec 19 22:25:57.352 INFO [stderr] 240 |             let mut op_node: Node = Node { t: "error_in_transformer".to_string(), val: "".to_string(), kids: Vec::new() };
Dec 19 22:25:57.352 INFO [stderr]     |                     ^^^^^^^
Dec 19 22:25:57.352 INFO [stderr]     |
Dec 19 22:25:57.352 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 19 22:25:57.352 INFO [stderr]     = help: maybe it is overwritten before being read?
Dec 19 22:25:57.352 INFO [stderr] 
Dec 19 22:25:57.368 INFO [stderr] warning: value assigned to `op_node` is never read
Dec 19 22:25:57.368 INFO [stderr]    --> src/main.rs:240:21
Dec 19 22:25:57.368 INFO [stderr]     |
Dec 19 22:25:57.368 INFO [stderr] 240 |             let mut op_node: Node = Node { t: "error_in_transformer".to_string(), val: "".to_string(), kids: Vec::new() };
Dec 19 22:25:57.368 INFO [stderr]     |                     ^^^^^^^
Dec 19 22:25:57.368 INFO [stderr]     |
Dec 19 22:25:57.368 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 19 22:25:57.368 INFO [stderr]     = help: maybe it is overwritten before being read?
Dec 19 22:25:57.368 INFO [stderr] 
Dec 19 22:25:57.380 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 22:25:57.380 INFO [stderr]   --> src/main.rs:25:5
Dec 19 22:25:57.380 INFO [stderr]    |
Dec 19 22:25:57.380 INFO [stderr] 25 |     in_file.read_to_string(&mut s);
Dec 19 22:25:57.380 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:25:57.380 INFO [stderr]    |
Dec 19 22:25:57.380 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 22:25:57.380 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 22:25:57.380 INFO [stderr] 
Dec 19 22:25:57.400 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 22:25:57.400 INFO [stderr]   --> src/main.rs:25:5
Dec 19 22:25:57.400 INFO [stderr]    |
Dec 19 22:25:57.400 INFO [stderr] 25 |     in_file.read_to_string(&mut s);
Dec 19 22:25:57.400 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:25:57.400 INFO [stderr]    |
Dec 19 22:25:57.400 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 22:25:57.400 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 22:25:57.400 INFO [stderr] 
Dec 19 22:25:57.416 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
Dec 19 22:25:57.972 INFO running `"docker" "inspect" "6e3f76a9715a105ef54c8e5387cd8575e02278e7b3710f05eaa5d1ce67a9f01e"`
Dec 19 22:25:58.130 INFO running `"docker" "rm" "-f" "6e3f76a9715a105ef54c8e5387cd8575e02278e7b3710f05eaa5d1ce67a9f01e"`
Dec 19 22:25:58.241 INFO [stdout] 6e3f76a9715a105ef54c8e5387cd8575e02278e7b3710f05eaa5d1ce67a9f01e