[INFO] updating cached repository PBertinJohannet/exprToSop
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PBertinJohannet/exprToSop
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PBertinJohannet/exprToSop" "work/ex/beta-1.38-1/sources/1.37.0/gh/PBertinJohannet/exprToSop"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/PBertinJohannet/exprToSop'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PBertinJohannet/exprToSop" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PBertinJohannet/exprToSop"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PBertinJohannet/exprToSop'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ce2df56f710a898d139c3941e28447a342684dea
[INFO] sha for GitHub repo PBertinJohannet/exprToSop: ce2df56f710a898d139c3941e28447a342684dea
[INFO] validating manifest of PBertinJohannet/exprToSop 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 PBertinJohannet/exprToSop 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 PBertinJohannet/exprToSop
[INFO] finished frobbing PBertinJohannet/exprToSop
[INFO] frobbed toml for PBertinJohannet/exprToSop written to work/ex/beta-1.38-1/sources/1.37.0/gh/PBertinJohannet/exprToSop/Cargo.toml
[INFO] started frobbing PBertinJohannet/exprToSop
[INFO] finished frobbing PBertinJohannet/exprToSop
[INFO] frobbed toml for PBertinJohannet/exprToSop written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PBertinJohannet/exprToSop/Cargo.toml
[INFO] crate PBertinJohannet/exprToSop 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 PBertinJohannet/exprToSop 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/PBertinJohannet/exprToSop:/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] 4d40a64c602b390f4ac613b8bb7b0fc5c9d85c13c214e9d7c4ae7b4da4bda2d6
[INFO] running `"docker" "start" "-a" "4d40a64c602b390f4ac613b8bb7b0fc5c9d85c13c214e9d7c4ae7b4da4bda2d6"`
[INFO] [stderr]    Compiling booleansimplify v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(box_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:74:16
[INFO] [stderr]    |
[INFO] [stderr] 74 |             '2'...'9' => self.identifier(),
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(ellipsis_inclusive_range_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:75:16
[INFO] [stderr]    |
[INFO] [stderr] 75 |             'a'...'z' => self.identifier(),
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer.rs:76:16
[INFO] [stderr]    |
[INFO] [stderr] 76 |             'A'...'Z' => self.identifier(),
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Sum`
[INFO] [stderr]  --> src/mccluskey.rs:3:26
[INFO] [stderr]   |
[INFO] [stderr] 3 | use equation::{Equation, Sum, Prod, Not};
[INFO] [stderr]   |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `booleansimplify`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4d40a64c602b390f4ac613b8bb7b0fc5c9d85c13c214e9d7c4ae7b4da4bda2d6"`
[INFO] running `"docker" "rm" "-f" "4d40a64c602b390f4ac613b8bb7b0fc5c9d85c13c214e9d7c4ae7b4da4bda2d6"`
[INFO] [stdout] 4d40a64c602b390f4ac613b8bb7b0fc5c9d85c13c214e9d7c4ae7b4da4bda2d6