[INFO] updating cached repository Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e080a4b5b9bde0beb557249f4d78827416042c8b
[INFO] sha for GitHub repo Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees: e080a4b5b9bde0beb557249f4d78827416042c8b
[INFO] validating manifest of Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees
[INFO] finished frobbing Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees
[INFO] frobbed toml for Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees/Cargo.toml
[INFO] started frobbing Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees
[INFO] finished frobbing Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees
[INFO] frobbed toml for Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees/Cargo.toml
[INFO] crate Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees against try#06a150c7d11500b41499224f165e9de1de096768 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-2/try#06a150c7d11500b41499224f165e9de1de096768:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+06a150c7d11500b41499224f165e9de1de096768-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 179db1690b046932ede534a2cd32a053c54f84225c689e9a2b4d2df06be971a5
[INFO] running `"docker" "start" "-a" "179db1690b046932ede534a2cd32a053c54f84225c689e9a2b4d2df06be971a5"`
[INFO] [stderr]     Checking slpj v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::collections::HashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Display`, `self`
[INFO] [stderr]  --> src/main.rs:5:16
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::fmt::{self, Display};
[INFO] [stderr]   |                ^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hint::unreachable_unchecked`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::hint::unreachable_unchecked;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::collections::HashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Display`, `self`
[INFO] [stderr]  --> src/main.rs:5:16
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::fmt::{self, Display};
[INFO] [stderr]   |                ^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hint::unreachable_unchecked`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::hint::unreachable_unchecked;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/decision.rs:2:31
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::{self, Display, Write};
[INFO] [stderr]   |                               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]    --> src/matrix.rs:124:21
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 for j in 0..self.columns[i].0.len() {
[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: unused variable: `i`
[INFO] [stderr]    --> src/matrix.rs:151:14
[INFO] [stderr]     |
[INFO] [stderr] 151 |         for (i, row) in self.columns.iter().enumerate() {
[INFO] [stderr]     |              ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/decision.rs:2:31
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::{self, Display, Write};
[INFO] [stderr]   |                               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]    --> src/matrix.rs:124:21
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 for j in 0..self.columns[i].0.len() {
[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: unused variable: `i`
[INFO] [stderr]    --> src/matrix.rs:151:14
[INFO] [stderr]     |
[INFO] [stderr] 151 |         for (i, row) in self.columns.iter().enumerate() {
[INFO] [stderr]     |              ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_signature`
[INFO] [stderr]    --> src/matrix.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     pub fn get_signature(&self,index:usize) -> HashSet<Constructor> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Or`
[INFO] [stderr]   --> src/pattern.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     Or(Box<Pattern>, Box<Pattern>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `nil`
[INFO] [stderr]   --> src/pattern.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn nil() -> Pattern {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_signature`
[INFO] [stderr]    --> src/matrix.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     pub fn get_signature(&self,index:usize) -> HashSet<Constructor> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Or`
[INFO] [stderr]   --> src/pattern.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     Or(Box<Pattern>, Box<Pattern>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `nil`
[INFO] [stderr]   --> src/pattern.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn nil() -> Pattern {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "179db1690b046932ede534a2cd32a053c54f84225c689e9a2b4d2df06be971a5"`
[INFO] running `"docker" "rm" "-f" "179db1690b046932ede534a2cd32a053c54f84225c689e9a2b4d2df06be971a5"`
[INFO] [stdout] 179db1690b046932ede534a2cd32a053c54f84225c689e9a2b4d2df06be971a5