Dec 18 12:25:54.128 INFO checking release-0.8.1 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 12:25:54.129 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/release/0.8.1:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 12:25:54.586 INFO [stdout] 1636a7dcd87db351c5f85ce87d0b1619bb600e6fdd24888365feb7aea21bd711
Dec 18 12:25:54.588 INFO running `"docker" "start" "-a" "1636a7dcd87db351c5f85ce87d0b1619bb600e6fdd24888365feb7aea21bd711"`
Dec 18 12:25:56.159 INFO [stderr]     Checking release v0.8.1 (/opt/crater/workdir)
Dec 18 12:25:57.114 INFO [stderr] warning: unused import: `std::env::current_dir`
Dec 18 12:25:57.114 INFO [stderr]  --> src/tags.rs:4:5
Dec 18 12:25:57.115 INFO [stderr]   |
Dec 18 12:25:57.115 INFO [stderr] 4 | use std::env::current_dir;
Dec 18 12:25:57.115 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 12:25:57.115 INFO [stderr]   |
Dec 18 12:25:57.115 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 12:25:57.115 INFO [stderr] 
Dec 18 12:25:57.176 INFO [stderr] warning: unused import: `std::env::current_dir`
Dec 18 12:25:57.176 INFO [stderr]  --> src/tags.rs:4:5
Dec 18 12:25:57.176 INFO [stderr]   |
Dec 18 12:25:57.176 INFO [stderr] 4 | use std::env::current_dir;
Dec 18 12:25:57.176 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 12:25:57.176 INFO [stderr]   |
Dec 18 12:25:57.176 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 12:25:57.176 INFO [stderr] 
Dec 18 12:25:57.208 INFO [stderr] warning: unused variable: `E`
Dec 18 12:25:57.208 INFO [stderr]   --> src/main.rs:27:17
Dec 18 12:25:57.208 INFO [stderr]    |
Dec 18 12:25:57.208 INFO [stderr] 27 |             Err(E) => {
Dec 18 12:25:57.208 INFO [stderr]    |                 ^ help: consider using `_E` instead
Dec 18 12:25:57.208 INFO [stderr]    |
Dec 18 12:25:57.208 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 12:25:57.208 INFO [stderr] 
Dec 18 12:25:57.237 INFO [stderr] warning: variable does not need to be mutable
Dec 18 12:25:57.237 INFO [stderr]   --> src/tags.rs:48:13
Dec 18 12:25:57.237 INFO [stderr]    |
Dec 18 12:25:57.237 INFO [stderr] 48 |         let mut versions = self.get_tags().versions();
Dec 18 12:25:57.237 INFO [stderr]    |             ----^^^^^^^^
Dec 18 12:25:57.237 INFO [stderr]    |             |
Dec 18 12:25:57.237 INFO [stderr]    |             help: remove this `mut`
Dec 18 12:25:57.237 INFO [stderr]    |
Dec 18 12:25:57.237 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 12:25:57.237 INFO [stderr] 
Dec 18 12:25:57.240 INFO [stderr] warning: variable does not need to be mutable
Dec 18 12:25:57.240 INFO [stderr]   --> src/tags.rs:84:13
Dec 18 12:25:57.240 INFO [stderr]    |
Dec 18 12:25:57.240 INFO [stderr] 84 |         let mut val;
Dec 18 12:25:57.240 INFO [stderr]    |             ----^^^
Dec 18 12:25:57.240 INFO [stderr]    |             |
Dec 18 12:25:57.240 INFO [stderr]    |             help: remove this `mut`
Dec 18 12:25:57.240 INFO [stderr] 
Dec 18 12:25:57.240 INFO [stderr] warning: variable does not need to be mutable
Dec 18 12:25:57.240 INFO [stderr]   --> src/tags.rs:97:13
Dec 18 12:25:57.240 INFO [stderr]    |
Dec 18 12:25:57.240 INFO [stderr] 97 |         let mut obj;
Dec 18 12:25:57.240 INFO [stderr]    |             ----^^^
Dec 18 12:25:57.240 INFO [stderr]    |             |
Dec 18 12:25:57.240 INFO [stderr]    |             help: remove this `mut`
Dec 18 12:25:57.241 INFO [stderr] 
Dec 18 12:25:57.248 INFO [stderr] warning: method is never used: `iter`
Dec 18 12:25:57.248 INFO [stderr]    --> src/tags.rs:105:5
Dec 18 12:25:57.248 INFO [stderr]     |
Dec 18 12:25:57.248 INFO [stderr] 105 |     pub fn iter(&self) -> Iter<Version>{
Dec 18 12:25:57.248 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 12:25:57.248 INFO [stderr]     |
Dec 18 12:25:57.248 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 12:25:57.248 INFO [stderr] 
Dec 18 12:25:57.248 INFO [stderr] warning: variable `E` should have a snake case name such as `e`
Dec 18 12:25:57.248 INFO [stderr]   --> src/tags.rs:79:17
Dec 18 12:25:57.248 INFO [stderr]    |
Dec 18 12:25:57.248 INFO [stderr] 79 |             Err(E) => Err(E)
Dec 18 12:25:57.248 INFO [stderr]    |                 ^
Dec 18 12:25:57.248 INFO [stderr]    |
Dec 18 12:25:57.248 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 18 12:25:57.248 INFO [stderr] 
Dec 18 12:25:57.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 12:25:57.248 INFO [stderr]   --> src/main.rs:25:17
Dec 18 12:25:57.248 INFO [stderr]    |
Dec 18 12:25:57.248 INFO [stderr] 25 |                 release.make_release(vtype);
Dec 18 12:25:57.248 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 12:25:57.248 INFO [stderr]    |
Dec 18 12:25:57.248 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 12:25:57.248 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 12:25:57.248 INFO [stderr] 
Dec 18 12:25:57.248 INFO [stderr] warning: variable `E` should have a snake case name such as `e`
Dec 18 12:25:57.249 INFO [stderr]   --> src/main.rs:27:17
Dec 18 12:25:57.249 INFO [stderr]    |
Dec 18 12:25:57.249 INFO [stderr] 27 |             Err(E) => {
Dec 18 12:25:57.249 INFO [stderr]    |                 ^
Dec 18 12:25:57.249 INFO [stderr] 
Dec 18 12:25:57.319 INFO [stderr] warning: unused variable: `E`
Dec 18 12:25:57.319 INFO [stderr]   --> src/main.rs:27:17
Dec 18 12:25:57.319 INFO [stderr]    |
Dec 18 12:25:57.319 INFO [stderr] 27 |             Err(E) => {
Dec 18 12:25:57.319 INFO [stderr]    |                 ^ help: consider using `_E` instead
Dec 18 12:25:57.319 INFO [stderr]    |
Dec 18 12:25:57.319 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 12:25:57.319 INFO [stderr] 
Dec 18 12:25:57.351 INFO [stderr] warning: variable does not need to be mutable
Dec 18 12:25:57.351 INFO [stderr]   --> src/tags.rs:48:13
Dec 18 12:25:57.351 INFO [stderr]    |
Dec 18 12:25:57.351 INFO [stderr] 48 |         let mut versions = self.get_tags().versions();
Dec 18 12:25:57.351 INFO [stderr]    |             ----^^^^^^^^
Dec 18 12:25:57.351 INFO [stderr]    |             |
Dec 18 12:25:57.351 INFO [stderr]    |             help: remove this `mut`
Dec 18 12:25:57.351 INFO [stderr]    |
Dec 18 12:25:57.351 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 12:25:57.351 INFO [stderr] 
Dec 18 12:25:57.353 INFO [stderr] warning: variable does not need to be mutable
Dec 18 12:25:57.353 INFO [stderr]   --> src/tags.rs:84:13
Dec 18 12:25:57.353 INFO [stderr]    |
Dec 18 12:25:57.353 INFO [stderr] 84 |         let mut val;
Dec 18 12:25:57.353 INFO [stderr]    |             ----^^^
Dec 18 12:25:57.353 INFO [stderr]    |             |
Dec 18 12:25:57.353 INFO [stderr]    |             help: remove this `mut`
Dec 18 12:25:57.353 INFO [stderr] 
Dec 18 12:25:57.357 INFO [stderr] warning: variable does not need to be mutable
Dec 18 12:25:57.357 INFO [stderr]   --> src/tags.rs:97:13
Dec 18 12:25:57.357 INFO [stderr]    |
Dec 18 12:25:57.357 INFO [stderr] 97 |         let mut obj;
Dec 18 12:25:57.357 INFO [stderr]    |             ----^^^
Dec 18 12:25:57.357 INFO [stderr]    |             |
Dec 18 12:25:57.357 INFO [stderr]    |             help: remove this `mut`
Dec 18 12:25:57.357 INFO [stderr] 
Dec 18 12:25:57.364 INFO [stderr] warning: method is never used: `iter`
Dec 18 12:25:57.364 INFO [stderr]    --> src/tags.rs:105:5
Dec 18 12:25:57.364 INFO [stderr]     |
Dec 18 12:25:57.364 INFO [stderr] 105 |     pub fn iter(&self) -> Iter<Version>{
Dec 18 12:25:57.364 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 12:25:57.364 INFO [stderr]     |
Dec 18 12:25:57.364 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 12:25:57.364 INFO [stderr] 
Dec 18 12:25:57.364 INFO [stderr] warning: variable `E` should have a snake case name such as `e`
Dec 18 12:25:57.364 INFO [stderr]   --> src/tags.rs:79:17
Dec 18 12:25:57.364 INFO [stderr]    |
Dec 18 12:25:57.364 INFO [stderr] 79 |             Err(E) => Err(E)
Dec 18 12:25:57.364 INFO [stderr]    |                 ^
Dec 18 12:25:57.364 INFO [stderr]    |
Dec 18 12:25:57.364 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 18 12:25:57.364 INFO [stderr] 
Dec 18 12:25:57.364 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 12:25:57.364 INFO [stderr]   --> src/main.rs:25:17
Dec 18 12:25:57.364 INFO [stderr]    |
Dec 18 12:25:57.364 INFO [stderr] 25 |                 release.make_release(vtype);
Dec 18 12:25:57.364 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 12:25:57.364 INFO [stderr]    |
Dec 18 12:25:57.364 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 12:25:57.364 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 12:25:57.364 INFO [stderr] 
Dec 18 12:25:57.364 INFO [stderr] warning: variable `E` should have a snake case name such as `e`
Dec 18 12:25:57.364 INFO [stderr]   --> src/main.rs:27:17
Dec 18 12:25:57.364 INFO [stderr]    |
Dec 18 12:25:57.364 INFO [stderr] 27 |             Err(E) => {
Dec 18 12:25:57.364 INFO [stderr]    |                 ^
Dec 18 12:25:57.364 INFO [stderr] 
Dec 18 12:25:57.384 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
Dec 18 12:25:57.654 INFO running `"docker" "inspect" "1636a7dcd87db351c5f85ce87d0b1619bb600e6fdd24888365feb7aea21bd711"`
Dec 18 12:25:57.711 INFO running `"docker" "rm" "-f" "1636a7dcd87db351c5f85ce87d0b1619bb600e6fdd24888365feb7aea21bd711"`
Dec 18 12:25:57.836 INFO [stdout] 1636a7dcd87db351c5f85ce87d0b1619bb600e6fdd24888365feb7aea21bd711