[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/beta-1.38-1/sources/1.37.0/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/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/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 7586c386fbfd2e3296c3a7a8230efb312a9c23fdb1ebcb7c39d881b4c689168e
[INFO] running `"docker" "start" "-a" "7586c386fbfd2e3296c3a7a8230efb312a9c23fdb1ebcb7c39d881b4c689168e"`
[INFO] [stderr]    Compiling 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: `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]     Finished dev [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `"docker" "inspect" "7586c386fbfd2e3296c3a7a8230efb312a9c23fdb1ebcb7c39d881b4c689168e"`
[INFO] running `"docker" "rm" "-f" "7586c386fbfd2e3296c3a7a8230efb312a9c23fdb1ebcb7c39d881b4c689168e"`
[INFO] [stdout] 7586c386fbfd2e3296c3a7a8230efb312a9c23fdb1ebcb7c39d881b4c689168e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] c2115566c55bf7a8d7c54c086c37beb2df633d470d13ab4055f30e627784fb7a
[INFO] running `"docker" "start" "-a" "c2115566c55bf7a8d7c54c086c37beb2df633d470d13ab4055f30e627784fb7a"`
[INFO] [stderr]    Compiling 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: `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]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `"docker" "inspect" "c2115566c55bf7a8d7c54c086c37beb2df633d470d13ab4055f30e627784fb7a"`
[INFO] running `"docker" "rm" "-f" "c2115566c55bf7a8d7c54c086c37beb2df633d470d13ab4055f30e627784fb7a"`
[INFO] [stdout] c2115566c55bf7a8d7c54c086c37beb2df633d470d13ab4055f30e627784fb7a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Lapz/Compiling-Pattern-Matching-to-Good-Decision-Trees:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 36d8ccec4f383e2bfa8b3422d7ba24706e61e39417f9a6881203c0059155c32f
[INFO] running `"docker" "start" "-a" "36d8ccec4f383e2bfa8b3422d7ba24706e61e39417f9a6881203c0059155c32f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/slpj-9766c291a23bbfa1
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::specialization_on_split_works ... ok
[INFO] [stdout] test test::specialization_on_list_works ... ok
[INFO] [stdout] test test::default_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "36d8ccec4f383e2bfa8b3422d7ba24706e61e39417f9a6881203c0059155c32f"`
[INFO] running `"docker" "rm" "-f" "36d8ccec4f383e2bfa8b3422d7ba24706e61e39417f9a6881203c0059155c32f"`
[INFO] [stdout] 36d8ccec4f383e2bfa8b3422d7ba24706e61e39417f9a6881203c0059155c32f