[INFO] cloning repository maniflames/time-frame-json-generator
[INFO] running `"git" "clone" "--bare" "git://github.com/maniflames/time-frame-json-generator.git" "work/cache/sources/gh/maniflames/time-frame-json-generator"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/maniflames/time-frame-json-generator'...
[INFO] running `"git" "clone" "work/cache/sources/gh/maniflames/time-frame-json-generator" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maniflames/time-frame-json-generator"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maniflames/time-frame-json-generator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/maniflames/time-frame-json-generator" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maniflames/time-frame-json-generator"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maniflames/time-frame-json-generator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5177d990276887f3c5803f437e2020504c242f6f
[INFO] sha for GitHub repo maniflames/time-frame-json-generator: 5177d990276887f3c5803f437e2020504c242f6f
[INFO] validating manifest of maniflames/time-frame-json-generator on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of maniflames/time-frame-json-generator on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing maniflames/time-frame-json-generator
[INFO] finished frobbing maniflames/time-frame-json-generator
[INFO] frobbed toml for maniflames/time-frame-json-generator written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maniflames/time-frame-json-generator/Cargo.toml
[INFO] started frobbing maniflames/time-frame-json-generator
[INFO] finished frobbing maniflames/time-frame-json-generator
[INFO] frobbed toml for maniflames/time-frame-json-generator written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maniflames/time-frame-json-generator/Cargo.toml
[INFO] crate maniflames/time-frame-json-generator already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking maniflames/time-frame-json-generator against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-3/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maniflames/time-frame-json-generator:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6159e41da35ad74df6ddb653246924bd98bda95f8c13c1552d7488cb83a8bed4
[INFO] running `"docker" "start" "-a" "6159e41da35ad74df6ddb653246924bd98bda95f8c13c1552d7488cb83a8bed4"`
[INFO] [stderr]     Checking timeframe v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/main.rs:7:29
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rustc_serialize::json::{self, Encoder};
[INFO] [stderr]   |                             ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/main.rs:7:29
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rustc_serialize::json::{self, Encoder};
[INFO] [stderr]   |                             ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |             let mut package_ids_len = package_ids.len();
[INFO] [stderr]    |                 ----^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |             let mut package_ids_len = package_ids.len();
[INFO] [stderr]    |                 ----^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/utils.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     f.read_to_string(&mut json);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/utils.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     f.read_to_string(&mut json);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `"docker" "inspect" "6159e41da35ad74df6ddb653246924bd98bda95f8c13c1552d7488cb83a8bed4"`
[INFO] running `"docker" "rm" "-f" "6159e41da35ad74df6ddb653246924bd98bda95f8c13c1552d7488cb83a8bed4"`
[INFO] [stdout] 6159e41da35ad74df6ddb653246924bd98bda95f8c13c1552d7488cb83a8bed4