[INFO] cloning repository wspeirs/family_tree
[INFO] running `"git" "clone" "--bare" "git://github.com/wspeirs/family_tree.git" "work/cache/sources/gh/wspeirs/family_tree"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/wspeirs/family_tree'...
[INFO] running `"git" "clone" "work/cache/sources/gh/wspeirs/family_tree" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/wspeirs/family_tree"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/wspeirs/family_tree'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wspeirs/family_tree" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/wspeirs/family_tree"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/wspeirs/family_tree'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d82a4a12d40dc3d58211d1c2374cb72236f0f6f6
[INFO] sha for GitHub repo wspeirs/family_tree: d82a4a12d40dc3d58211d1c2374cb72236f0f6f6
[INFO] validating manifest of wspeirs/family_tree 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 wspeirs/family_tree 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 wspeirs/family_tree
[INFO] finished frobbing wspeirs/family_tree
[INFO] frobbed toml for wspeirs/family_tree written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/wspeirs/family_tree/Cargo.toml
[INFO] started frobbing wspeirs/family_tree
[INFO] finished frobbing wspeirs/family_tree
[INFO] frobbed toml for wspeirs/family_tree written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/wspeirs/family_tree/Cargo.toml
[INFO] crate wspeirs/family_tree 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 wspeirs/family_tree against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-0/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/wspeirs/family_tree:/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] e405621e4b75a56527677e171a63df5c1ccdf8e2363ad587f0e9a7aab926a1ec
[INFO] running `"docker" "start" "-a" "e405621e4b75a56527677e171a63df5c1ccdf8e2363ad587f0e9a7aab926a1ec"`
[INFO] [stderr]    Compiling serde v1.0.83
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking pbr v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.83
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking simple_logger v1.0.1
[INFO] [stderr]     Checking csv v1.0.5
[INFO] [stderr]     Checking family_tree v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `IntoNodeReferences`
[INFO] [stderr]   --> src/main.rs:12:28
[INFO] [stderr]    |
[INFO] [stderr] 12 | use petgraph::visit::{Dfs, IntoNodeReferences};
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Config`, `Dot`
[INFO] [stderr]   --> src/main.rs:13:21
[INFO] [stderr]    |
[INFO] [stderr] 13 | use petgraph::dot::{Dot, Config};
[INFO] [stderr]    |                     ^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `IntoNodeReferences`
[INFO] [stderr]   --> src/main.rs:12:28
[INFO] [stderr]    |
[INFO] [stderr] 12 | use petgraph::visit::{Dfs, IntoNodeReferences};
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Config`, `Dot`
[INFO] [stderr]   --> src/main.rs:13:21
[INFO] [stderr]    |
[INFO] [stderr] 13 | use petgraph::dot::{Dot, Config};
[INFO] [stderr]    |                     ^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:133:9
[INFO] [stderr]     |
[INFO] [stderr] 133 |     let mut min_generation = 0;
[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:133:9
[INFO] [stderr]     |
[INFO] [stderr] 133 |     let mut min_generation = 0;
[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]     Finished dev [unoptimized + debuginfo] target(s) in 26.46s
[INFO] running `"docker" "inspect" "e405621e4b75a56527677e171a63df5c1ccdf8e2363ad587f0e9a7aab926a1ec"`
[INFO] running `"docker" "rm" "-f" "e405621e4b75a56527677e171a63df5c1ccdf8e2363ad587f0e9a7aab926a1ec"`
[INFO] [stdout] e405621e4b75a56527677e171a63df5c1ccdf8e2363ad587f0e9a7aab926a1ec