[INFO] updating cached repository derezzedex/puzzle_solver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/derezzedex/puzzle_solver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/derezzedex/puzzle_solver" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/derezzedex/puzzle_solver"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/derezzedex/puzzle_solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/derezzedex/puzzle_solver" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/derezzedex/puzzle_solver"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/derezzedex/puzzle_solver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 12ff182c6baa90371baf565b4980d30c74f7b831
[INFO] sha for GitHub repo derezzedex/puzzle_solver: 12ff182c6baa90371baf565b4980d30c74f7b831
[INFO] validating manifest of derezzedex/puzzle_solver on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of derezzedex/puzzle_solver on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing derezzedex/puzzle_solver
[INFO] finished frobbing derezzedex/puzzle_solver
[INFO] frobbed toml for derezzedex/puzzle_solver written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/derezzedex/puzzle_solver/Cargo.toml
[INFO] started frobbing derezzedex/puzzle_solver
[INFO] finished frobbing derezzedex/puzzle_solver
[INFO] frobbed toml for derezzedex/puzzle_solver written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/derezzedex/puzzle_solver/Cargo.toml
[INFO] crate derezzedex/puzzle_solver already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking derezzedex/puzzle_solver against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-5/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/derezzedex/puzzle_solver:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 09c808af16efcc97c448445a50b5ed20f55e9764ce0c511855c2e749e05ca8aa
[INFO] running `"docker" "start" "-a" "09c808af16efcc97c448445a50b5ed20f55e9764ce0c511855c2e749e05ca8aa"`
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]     Checking serde v1.0.24
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]    Compiling serde_derive_internals v0.18.0
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking regex v0.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.24
[INFO] [stderr]     Checking docopt v0.8.1
[INFO] [stderr]     Checking puzzle_solver v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/main.rs:308:13
[INFO] [stderr]     |
[INFO] [stderr] 308 |                 let r = (33 + ((i+14)%94));
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/main.rs:308:13
[INFO] [stderr]     |
[INFO] [stderr] 308 |                 let r = (33 + ((i+14)%94));
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]    --> src/main.rs:415:10
[INFO] [stderr]     |
[INFO] [stderr] 415 |     let mut result = String::new();
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/main.rs:414:9
[INFO] [stderr]     |
[INFO] [stderr] 414 |     #[warn(unused_assignments)]
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]    --> src/main.rs:228:8
[INFO] [stderr]     |
[INFO] [stderr] 228 |             let j = string.find(i).unwrap();
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_j`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]    --> src/main.rs:415:10
[INFO] [stderr]     |
[INFO] [stderr] 415 |     let mut result = String::new();
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/main.rs:414:9
[INFO] [stderr]     |
[INFO] [stderr] 414 |     #[warn(unused_assignments)]
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]    --> src/main.rs:228:8
[INFO] [stderr]     |
[INFO] [stderr] 228 |             let j = string.find(i).unwrap();
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_j`
[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/main.rs:198:10
[INFO] [stderr]     |
[INFO] [stderr] 198 |         let mut separator: usize = 4;
[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/main.rs:254:7
[INFO] [stderr]     |
[INFO] [stderr] 254 |         let mut result = self.to_str();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:198:10
[INFO] [stderr]     |
[INFO] [stderr] 198 |         let mut separator: usize = 4;
[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/main.rs:254:7
[INFO] [stderr]     |
[INFO] [stderr] 254 |         let mut result = self.to_str();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rot_self`
[INFO] [stderr]    --> src/main.rs:253:2
[INFO] [stderr]     |
[INFO] [stderr] 253 |     fn rot_self(&self, rot: usize) -> Self{
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/main.rs:271:21
[INFO] [stderr]     |
[INFO] [stderr] 271 |             if index > 26 || index < 0{
[INFO] [stderr]     |                              ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rot_self`
[INFO] [stderr]    --> src/main.rs:253:2
[INFO] [stderr]     |
[INFO] [stderr] 253 |     fn rot_self(&self, rot: usize) -> Self{
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/main.rs:271:21
[INFO] [stderr]     |
[INFO] [stderr] 271 |             if index > 26 || index < 0{
[INFO] [stderr]     |                              ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.67s
[INFO] running `"docker" "inspect" "09c808af16efcc97c448445a50b5ed20f55e9764ce0c511855c2e749e05ca8aa"`
[INFO] running `"docker" "rm" "-f" "09c808af16efcc97c448445a50b5ed20f55e9764ce0c511855c2e749e05ca8aa"`
[INFO] [stdout] 09c808af16efcc97c448445a50b5ed20f55e9764ce0c511855c2e749e05ca8aa