[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/beta-1.38-1/sources/1.37.0/gh/adnelson/nix-browse"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/adnelson/nix-browse'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/adnelson/nix-browse" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/adnelson/nix-browse"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 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 adnelson/nix-browse 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 adnelson/nix-browse
[INFO] finished frobbing adnelson/nix-browse
[INFO] frobbed toml for adnelson/nix-browse written to work/ex/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/gh/adnelson/nix-browse/Cargo.toml
[INFO] crate adnelson/nix-browse 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 adnelson/nix-browse 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/adnelson/nix-browse:/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] e47c9b7a44f3eae46b688ffacfde92be9d8a7b135280d1bcc8eb2321c677b795
[INFO] running `"docker" "start" "-a" "e47c9b7a44f3eae46b688ffacfde92be9d8a7b135280d1bcc8eb2321c677b795"`
[INFO] [stderr]    Compiling vec_map v0.7.0
[INFO] [stderr]    Compiling unicode-segmentation v1.1.0
[INFO] [stderr]    Compiling serde v0.9.11
[INFO] [stderr]    Compiling bitflags v0.8.0
[INFO] [stderr]    Compiling lazy_static v0.2.4
[INFO] [stderr]    Compiling unescape v0.1.0
[INFO] [stderr]    Compiling term_size v0.2.3
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling syn v0.11.9
[INFO] [stderr]    Compiling aho-corasick v0.6.2
[INFO] [stderr]    Compiling clap v2.21.1
[INFO] [stderr]    Compiling regex v0.2.1
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.1
[INFO] [stderr]    Compiling serde_derive v0.9.11
[INFO] [stderr]    Compiling serde_json v0.9.9
[INFO] [stderr]    Compiling 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: 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 59.18s
[INFO] running `"docker" "inspect" "e47c9b7a44f3eae46b688ffacfde92be9d8a7b135280d1bcc8eb2321c677b795"`
[INFO] running `"docker" "rm" "-f" "e47c9b7a44f3eae46b688ffacfde92be9d8a7b135280d1bcc8eb2321c677b795"`
[INFO] [stdout] e47c9b7a44f3eae46b688ffacfde92be9d8a7b135280d1bcc8eb2321c677b795
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/adnelson/nix-browse:/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] f4d4d700bf7aa7a721f8bb75b0dedc0244c39e364a2f3efe1531c194fae0871d
[INFO] running `"docker" "start" "-a" "f4d4d700bf7aa7a721f8bb75b0dedc0244c39e364a2f3efe1531c194fae0871d"`
[INFO] [stderr]    Compiling 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: `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]     Finished dev [unoptimized + debuginfo] target(s) in 2.78s
[INFO] running `"docker" "inspect" "f4d4d700bf7aa7a721f8bb75b0dedc0244c39e364a2f3efe1531c194fae0871d"`
[INFO] running `"docker" "rm" "-f" "f4d4d700bf7aa7a721f8bb75b0dedc0244c39e364a2f3efe1531c194fae0871d"`
[INFO] [stdout] f4d4d700bf7aa7a721f8bb75b0dedc0244c39e364a2f3efe1531c194fae0871d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/adnelson/nix-browse:/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] b5656208fbc006ca14abe4590e3044ac4108d4f1ee9305de43b5edb33d466efb
[INFO] running `"docker" "start" "-a" "b5656208fbc006ca14abe4590e3044ac4108d4f1ee9305de43b5edb33d466efb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/nix_browse-f354fc5396f7ca99
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test parse_nix_instantiate::test_token_from_str ... ok
[INFO] [stdout] test parse_nix_instantiate::test_parse_nums ... ok
[INFO] [stdout] test parse_nix_instantiate::test_parse_nested_list ... ok
[INFO] [stdout] test parse_nix_instantiate::test_parse_set ... ok
[INFO] [stdout] test parse_nix_instantiate::test_parse_list ... ok
[INFO] [stdout] test parse_nix_instantiate::test_nested_set ... ok
[INFO] [stdout] test parse_nix_instantiate::test_parse_strings ... ok
[INFO] [stdout] test parse_nix_instantiate::test_parse_literals ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b5656208fbc006ca14abe4590e3044ac4108d4f1ee9305de43b5edb33d466efb"`
[INFO] running `"docker" "rm" "-f" "b5656208fbc006ca14abe4590e3044ac4108d4f1ee9305de43b5edb33d466efb"`
[INFO] [stdout] b5656208fbc006ca14abe4590e3044ac4108d4f1ee9305de43b5edb33d466efb