[INFO] updating cached repository blakehawkins/compilethyme
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/blakehawkins/compilethyme
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/blakehawkins/compilethyme" "work/ex/beta-1.38-1/sources/1.37.0/gh/blakehawkins/compilethyme"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/blakehawkins/compilethyme'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/blakehawkins/compilethyme" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/blakehawkins/compilethyme"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/blakehawkins/compilethyme'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2dc1dbd6a20733aabc1f48dbbc5744f651a79d9e
[INFO] sha for GitHub repo blakehawkins/compilethyme: 2dc1dbd6a20733aabc1f48dbbc5744f651a79d9e
[INFO] validating manifest of blakehawkins/compilethyme 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 blakehawkins/compilethyme 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 blakehawkins/compilethyme
[INFO] finished frobbing blakehawkins/compilethyme
[INFO] frobbed toml for blakehawkins/compilethyme written to work/ex/beta-1.38-1/sources/1.37.0/gh/blakehawkins/compilethyme/Cargo.toml
[INFO] started frobbing blakehawkins/compilethyme
[INFO] finished frobbing blakehawkins/compilethyme
[INFO] frobbed toml for blakehawkins/compilethyme written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/blakehawkins/compilethyme/Cargo.toml
[INFO] crate blakehawkins/compilethyme 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 blakehawkins/compilethyme against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/blakehawkins/compilethyme:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] cc4b754fc99f5e179004204c43f0e0cad80a91789aaceb72af5479d208e2917b
[INFO] running `"docker" "start" "-a" "cc4b754fc99f5e179004204c43f0e0cad80a91789aaceb72af5479d208e2917b"`
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling lalrpop-util v0.16.3
[INFO] [stderr]    Compiling ena v0.11.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling hashbrown v0.1.8
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling strsim v0.9.1
[INFO] [stderr]    Compiling structopt v0.2.15
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling lalrpop v0.16.3
[INFO] [stderr]    Compiling compilethyme v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(box_syntax, box_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> /opt/crater/target/debug/build/compilethyme-9425e5a2d6ebc1e6/out/emoji.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> /opt/crater/target/debug/build/compilethyme-9425e5a2d6ebc1e6/out/identifier.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Type`
[INFO] [stderr]  --> /opt/crater/target/debug/build/compilethyme-9425e5a2d6ebc1e6/out/ast_parser.rs:4:27
[INFO] [stderr]   |
[INFO] [stderr] 4 | use ast::{Op, Expr, Term, Type};
[INFO] [stderr]   |                           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/main.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | #[macro_use] extern crate structopt;
[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 `compilethyme`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "cc4b754fc99f5e179004204c43f0e0cad80a91789aaceb72af5479d208e2917b"`
[INFO] running `"docker" "rm" "-f" "cc4b754fc99f5e179004204c43f0e0cad80a91789aaceb72af5479d208e2917b"`
[INFO] [stdout] cc4b754fc99f5e179004204c43f0e0cad80a91789aaceb72af5479d208e2917b