[INFO] updating cached repository CheukNgai/PageRank_Timely
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/CheukNgai/PageRank_Timely
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/CheukNgai/PageRank_Timely" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/CheukNgai/PageRank_Timely"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/CheukNgai/PageRank_Timely'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CheukNgai/PageRank_Timely" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/CheukNgai/PageRank_Timely"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/CheukNgai/PageRank_Timely'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2828a9534788794f7c93d9d888eb8170488b1a7c
[INFO] sha for GitHub repo CheukNgai/PageRank_Timely: 2828a9534788794f7c93d9d888eb8170488b1a7c
[INFO] validating manifest of CheukNgai/PageRank_Timely on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of CheukNgai/PageRank_Timely on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing CheukNgai/PageRank_Timely
[INFO] finished frobbing CheukNgai/PageRank_Timely
[INFO] frobbed toml for CheukNgai/PageRank_Timely written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/CheukNgai/PageRank_Timely/Cargo.toml
[INFO] started frobbing CheukNgai/PageRank_Timely
[INFO] finished frobbing CheukNgai/PageRank_Timely
[INFO] frobbed toml for CheukNgai/PageRank_Timely written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/CheukNgai/PageRank_Timely/Cargo.toml
[INFO] crate CheukNgai/PageRank_Timely already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking CheukNgai/PageRank_Timely against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-5/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/CheukNgai/PageRank_Timely:/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=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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 03eada6d7bba459d4800706e286427ec13ce9d613cf3560408d7245c30ccb469
[INFO] running `"docker" "start" "-a" "03eada6d7bba459d4800706e286427ec13ce9d613cf3560408d7245c30ccb469"`
[INFO] [stderr]     Checking abomonation v0.5.0
[INFO] [stderr]     Checking file v1.1.2
[INFO] [stderr]     Checking timely_sort v0.1.6
[INFO] [stderr]    Compiling abomonation_derive v0.3.0
[INFO] [stderr]     Checking timely_communication v0.6.0
[INFO] [stderr]     Checking timely v0.6.0
[INFO] [stderr]     Checking pagerank v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/main.rs:197:13
[INFO] [stderr]     |
[INFO] [stderr] 197 |             if (index == 0) {
[INFO] [stderr]     |                ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/main.rs:197:13
[INFO] [stderr]     |
[INFO] [stderr] 197 |             if (index == 0) {
[INFO] [stderr]     |                ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `diff`
[INFO] [stderr]    --> src/main.rs:115:43
[INFO] [stderr]     |
[INFO] [stderr] 115 |                                 for (dst, diff) in rank_changes.iter_mut() {
[INFO] [stderr]     |                                           ^^^^ help: consider prefixing with an underscore: `_diff`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `diff`
[INFO] [stderr]    --> src/main.rs:115:43
[INFO] [stderr]     |
[INFO] [stderr] 115 |                                 for (dst, diff) in rank_changes.iter_mut() {
[INFO] [stderr]     |                                           ^^^^ help: consider prefixing with an underscore: `_diff`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:163:13
[INFO] [stderr]     |
[INFO] [stderr] 163 |         let mut round = 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:163:13
[INFO] [stderr]     |
[INFO] [stderr] 163 |         let mut round = 0;
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:163:13
[INFO] [stderr]     |
[INFO] [stderr] 163 |         let mut round = 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:163:13
[INFO] [stderr]     |
[INFO] [stderr] 163 |         let mut round = 0;
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:187:6
[INFO] [stderr]     |
[INFO] [stderr] 187 |     let mut file = BufReader::new(&f);
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:209:9
[INFO] [stderr]     |
[INFO] [stderr] 209 |     let mut node_number = node_list.len();
[INFO] [stderr]     |         ----^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `default_PR` should have a snake case name
[INFO] [stderr]   --> src/main.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let default_PR:f32 = 1.0 / node_number as f32;
[INFO] [stderr]    |             ^^^^^^^^^^ help: convert the identifier to snake case: `default_pr`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:187:6
[INFO] [stderr]     |
[INFO] [stderr] 187 |     let mut file = BufReader::new(&f);
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:209:9
[INFO] [stderr]     |
[INFO] [stderr] 209 |     let mut node_number = node_list.len();
[INFO] [stderr]     |         ----^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `default_PR` should have a snake case name
[INFO] [stderr]   --> src/main.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let default_PR:f32 = 1.0 / node_number as f32;
[INFO] [stderr]    |             ^^^^^^^^^^ help: convert the identifier to snake case: `default_pr`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.14s
[INFO] running `"docker" "inspect" "03eada6d7bba459d4800706e286427ec13ce9d613cf3560408d7245c30ccb469"`
[INFO] running `"docker" "rm" "-f" "03eada6d7bba459d4800706e286427ec13ce9d613cf3560408d7245c30ccb469"`
[INFO] [stdout] 03eada6d7bba459d4800706e286427ec13ce9d613cf3560408d7245c30ccb469