[INFO] updating cached repository adnelson/nix-browse
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/adnelson/nix-browse
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/adnelson/nix-browse" "work/ex/pr-59527/sources/master#003382e4150984cb476047b3925edf8d75df2d59/gh/adnelson/nix-browse"`
[INFO] [stderr] Cloning into 'work/ex/pr-59527/sources/master#003382e4150984cb476047b3925edf8d75df2d59/gh/adnelson/nix-browse'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/adnelson/nix-browse" "work/ex/pr-59527/sources/try#47f4f94676fbdd494dd2c2dc9ac377a13fc78e00/gh/adnelson/nix-browse"`
[INFO] [stderr] Cloning into 'work/ex/pr-59527/sources/try#47f4f94676fbdd494dd2c2dc9ac377a13fc78e00/gh/adnelson/nix-browse'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 921245482ae7056849f6f575b7d630c170dc2a23
[INFO] sha for GitHub repo adnelson/nix-browse: 921245482ae7056849f6f575b7d630c170dc2a23
[INFO] validating manifest of adnelson/nix-browse on toolchain master#003382e4150984cb476047b3925edf8d75df2d59
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+003382e4150984cb476047b3925edf8d75df2d59-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of adnelson/nix-browse on toolchain try#47f4f94676fbdd494dd2c2dc9ac377a13fc78e00
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+47f4f94676fbdd494dd2c2dc9ac377a13fc78e00-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing adnelson/nix-browse
[INFO] finished frobbing adnelson/nix-browse
[INFO] frobbed toml for adnelson/nix-browse written to work/ex/pr-59527/sources/master#003382e4150984cb476047b3925edf8d75df2d59/gh/adnelson/nix-browse/Cargo.toml
[INFO] started frobbing adnelson/nix-browse
[INFO] finished frobbing adnelson/nix-browse
[INFO] frobbed toml for adnelson/nix-browse written to work/ex/pr-59527/sources/try#47f4f94676fbdd494dd2c2dc9ac377a13fc78e00/gh/adnelson/nix-browse/Cargo.toml
[INFO] crate adnelson/nix-browse already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+003382e4150984cb476047b3925edf8d75df2d59-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+47f4f94676fbdd494dd2c2dc9ac377a13fc78e00-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking adnelson/nix-browse against master#003382e4150984cb476047b3925edf8d75df2d59 for pr-59527
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59527/worker-5/master#003382e4150984cb476047b3925edf8d75df2d59:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59527/sources/master#003382e4150984cb476047b3925edf8d75df2d59/gh/adnelson/nix-browse:/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" "+003382e4150984cb476047b3925edf8d75df2d59-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e15cf408039e7b70077b596eef8cb42c74ae202ef678b3033139b7164454f41a
[INFO] running `"docker" "start" "-a" "e15cf408039e7b70077b596eef8cb42c74ae202ef678b3033139b7164454f41a"`
[INFO] [stderr]     Checking unescape v0.1.0
[INFO] [stderr]     Checking lazy_static v0.2.4
[INFO] [stderr]     Checking serde_json v0.9.9
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.1
[INFO] [stderr]     Checking clap v2.21.1
[INFO] [stderr]    Compiling serde_derive v0.9.11
[INFO] [stderr]     Checking nix-browse v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `regex::Regex`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use regex::Regex;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `FromIterator`
[INFO] [stderr]  --> src/parse_nix_instantiate.rs:6:27
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::iter::{Peekable, FromIterator};
[INFO] [stderr]   |                           ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::slice`
[INFO] [stderr]  --> src/parse_nix_instantiate.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::slice;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `regex::Regex`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use regex::Regex;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::slice`
[INFO] [stderr]  --> src/parse_nix_instantiate.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::slice;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `int_re` should have an upper case name
[INFO] [stderr]   --> src/parse_nix_instantiate.rs:38:24
[INFO] [stderr]    |
[INFO] [stderr] 38 |             static ref int_re: Regex = Regex::new(r"^-?\d+$").unwrap();
[INFO] [stderr]    |                        ^^^^^^ help: convert the identifier to upper case: `INT_RE`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `int_re` should have an upper case name
[INFO] [stderr]   --> src/parse_nix_instantiate.rs:38:24
[INFO] [stderr]    |
[INFO] [stderr] 38 |             static ref int_re: Regex = Regex::new(r"^-?\d+$").unwrap();
[INFO] [stderr]    |                        ^^^^^^ help: convert the identifier to upper case: `INT_RE`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.88s
[INFO] running `"docker" "inspect" "e15cf408039e7b70077b596eef8cb42c74ae202ef678b3033139b7164454f41a"`
[INFO] running `"docker" "rm" "-f" "e15cf408039e7b70077b596eef8cb42c74ae202ef678b3033139b7164454f41a"`
[INFO] [stdout] e15cf408039e7b70077b596eef8cb42c74ae202ef678b3033139b7164454f41a