[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-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/gh/adnelson/nix-browse"`
[INFO] [stderr] Cloning into 'work/ex/pr-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/gh/adnelson/nix-browse'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/adnelson/nix-browse" "work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/gh/adnelson/nix-browse"`
[INFO] [stderr] Cloning into 'work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/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#7840a0b753a065a41999f1fb6028f67d33e3fdd5
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+7840a0b753a065a41999f1fb6028f67d33e3fdd5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of adnelson/nix-browse on toolchain try#6a9f0b6cc40687e25f9d772e3b10bab335c63853
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+6a9f0b6cc40687e25f9d772e3b10bab335c63853-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-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/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-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/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" "+7840a0b753a065a41999f1fb6028f67d33e3fdd5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+6a9f0b6cc40687e25f9d772e3b10bab335c63853-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking adnelson/nix-browse against master#7840a0b753a065a41999f1fb6028f67d33e3fdd5 for pr-60466
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60466/worker-1/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/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" "+7840a0b753a065a41999f1fb6028f67d33e3fdd5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 41c1253d4d6338e57ba68c4d4f8fd42c677e79e67e96be8df4bf28b9956e45ec
[INFO] running `"docker" "start" "-a" "41c1253d4d6338e57ba68c4d4f8fd42c677e79e67e96be8df4bf28b9956e45ec"`
[INFO] [stderr]     Checking serde_json v0.9.9
[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 4.39s
[INFO] running `"docker" "inspect" "41c1253d4d6338e57ba68c4d4f8fd42c677e79e67e96be8df4bf28b9956e45ec"`
[INFO] running `"docker" "rm" "-f" "41c1253d4d6338e57ba68c4d4f8fd42c677e79e67e96be8df4bf28b9956e45ec"`
[INFO] [stdout] 41c1253d4d6338e57ba68c4d4f8fd42c677e79e67e96be8df4bf28b9956e45ec