[INFO] cloning repository https://github.com/metaphorshear/tsp
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/metaphorshear/tsp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmetaphorshear%2Ftsp"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmetaphorshear%2Ftsp'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6c53337d9248b3d7231dad7e229e29730eefb1aa
[INFO] checking metaphorshear/tsp against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmetaphorshear%2Ftsp" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/metaphorshear/tsp on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/metaphorshear/tsp
[INFO] finished tweaking git repo https://github.com/metaphorshear/tsp
[INFO] tweaked toml for git repo https://github.com/metaphorshear/tsp written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/metaphorshear/tsp already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fcef2c50e7da03a4d7e7774fcf2554eca7bcf46805bb5cdd5a1888ba3e64cb25
[INFO] running `"docker" "start" "-a" "fcef2c50e7da03a4d7e7774fcf2554eca7bcf46805bb5cdd5a1888ba3e64cb25"`
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking tsp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/aco.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 | /         /// grid_size : the number of nodes in the graph
[INFO] [stderr] 15 | |         /// initial strength : every edge in the pheromone matrix is initialized to this value
[INFO] [stderr] 16 | |         /// try num_cities/path_cost, where path_cost is the total cost of the first path
[INFO] [stderr]    | |_________________________________________________________________________________________^
[INFO] [stderr] 17 | 
[INFO] [stderr] 18 | /         ACO { pheromones: vec![ vec![initial_strength; grid_size]; grid_size ],
[INFO] [stderr] 19 | |               pweight: pweight, hweight : hweight, decay : decay }
[INFO] [stderr]    | |__________________________________________________________________- rustdoc does not generate documentation for expressions
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/tsp.rs:118:9
[INFO] [stderr]     |
[INFO] [stderr] 118 | /         ///Implementation of an Ant System, based on the code and descriptions in Clever Algorithms
[INFO] [stderr] 119 | |         ///pweight corresponds to alpha (the history coefficient), usually set to 1
[INFO] [stderr] 120 | |         ///hweight corresponds to beta (the heuristic coefficient), usually set between 2 and 5
[INFO] [stderr] 121 | |         ///decay is usually set to 0.5
[INFO] [stderr] 122 | |         ///number of ants should be number of cities
[INFO] [stderr]     | |____________________________________________________^
[INFO] [stderr] 123 | 
[INFO] [stderr] 124 |           let num_cities = self.ecm.ecm.len();
[INFO] [stderr]     |           ------------------------------------ rustdoc does not generate documentation for statements
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/tsp.rs:158:9
[INFO] [stderr]     |
[INFO] [stderr] 158 | /         ///This is a wrapper around ant_system, which sets sane values
[INFO] [stderr] 159 | |         ///You can still use the other one if you want to tweak everything
[INFO] [stderr]     | |__________________________________________________________________________^
[INFO] [stderr] 160 |           let pweight = 1f32;
[INFO] [stderr]     |           ------------------- rustdoc does not generate documentation for statements
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/tsp.rs:137:13
[INFO] [stderr]     |
[INFO] [stderr] 137 |         for n in 0..iterations {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/aco.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 | /         /// grid_size : the number of nodes in the graph
[INFO] [stderr] 15 | |         /// initial strength : every edge in the pheromone matrix is initialized to this value
[INFO] [stderr] 16 | |         /// try num_cities/path_cost, where path_cost is the total cost of the first path
[INFO] [stderr]    | |_________________________________________________________________________________________^
[INFO] [stderr] 17 | 
[INFO] [stderr] 18 | /         ACO { pheromones: vec![ vec![initial_strength; grid_size]; grid_size ],
[INFO] [stderr] 19 | |               pweight: pweight, hweight : hweight, decay : decay }
[INFO] [stderr]    | |__________________________________________________________________- rustdoc does not generate documentation for expressions
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/tsp.rs:118:9
[INFO] [stderr]     |
[INFO] [stderr] 118 | /         ///Implementation of an Ant System, based on the code and descriptions in Clever Algorithms
[INFO] [stderr] 119 | |         ///pweight corresponds to alpha (the history coefficient), usually set to 1
[INFO] [stderr] 120 | |         ///hweight corresponds to beta (the heuristic coefficient), usually set between 2 and 5
[INFO] [stderr] 121 | |         ///decay is usually set to 0.5
[INFO] [stderr] 122 | |         ///number of ants should be number of cities
[INFO] [stderr]     | |____________________________________________________^
[INFO] [stderr] 123 | 
[INFO] [stderr] 124 |           let num_cities = self.ecm.ecm.len();
[INFO] [stderr]     |           ------------------------------------ rustdoc does not generate documentation for statements
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/tsp.rs:158:9
[INFO] [stderr]     |
[INFO] [stderr] 158 | /         ///This is a wrapper around ant_system, which sets sane values
[INFO] [stderr] 159 | |         ///You can still use the other one if you want to tweak everything
[INFO] [stderr]     | |__________________________________________________________________________^
[INFO] [stderr] 160 |           let pweight = 1f32;
[INFO] [stderr]     |           ------------------- rustdoc does not generate documentation for statements
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/tsp.rs:137:13
[INFO] [stderr]     |
[INFO] [stderr] 137 |         for n in 0..iterations {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:13:21
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn time_fn(f : &mut FnMut() ) -> (f64) {
[INFO] [stderr]    |                     ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/main.rs:13:34
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn time_fn(f : &mut FnMut() ) -> (f64) {
[INFO] [stderr]    |                                  ^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:13:21
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn time_fn(f : &mut FnMut() ) -> (f64) {
[INFO] [stderr]    |                     ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/main.rs:13:34
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn time_fn(f : &mut FnMut() ) -> (f64) {
[INFO] [stderr]    |                                  ^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/main.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let n = num_cities;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/main.rs:202:13
[INFO] [stderr]     |
[INFO] [stderr] 202 |         for t in 0..trials {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/main.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let n = num_cities;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/main.rs:202:13
[INFO] [stderr]     |
[INFO] [stderr] 202 |         for t in 0..trials {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `quick_test`
[INFO] [stderr]   --> src/main.rs:50:4
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn quick_test(num_cities: usize) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `part_a`
[INFO] [stderr]   --> src/main.rs:77:4
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn part_a(){
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `part_b_and_c`
[INFO] [stderr]   --> src/main.rs:89:4
[INFO] [stderr]    |
[INFO] [stderr] 89 | fn part_b_and_c(){
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `part_d`
[INFO] [stderr]    --> src/main.rs:187:4
[INFO] [stderr]     |
[INFO] [stderr] 187 | fn part_d(trials : u64, monte_pow : usize){
[INFO] [stderr]     |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `quick_test`
[INFO] [stderr]   --> src/main.rs:50:4
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn quick_test(num_cities: usize) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `part_a`
[INFO] [stderr]   --> src/main.rs:77:4
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn part_a(){
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `part_b_and_c`
[INFO] [stderr]   --> src/main.rs:89:4
[INFO] [stderr]    |
[INFO] [stderr] 89 | fn part_b_and_c(){
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `part_d`
[INFO] [stderr]    --> src/main.rs:187:4
[INFO] [stderr]     |
[INFO] [stderr] 187 | fn part_d(trials : u64, monte_pow : usize){
[INFO] [stderr]     |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.60s
[INFO] running `"docker" "inspect" "fcef2c50e7da03a4d7e7774fcf2554eca7bcf46805bb5cdd5a1888ba3e64cb25"`
[INFO] running `"docker" "rm" "-f" "fcef2c50e7da03a4d7e7774fcf2554eca7bcf46805bb5cdd5a1888ba3e64cb25"`
[INFO] [stdout] fcef2c50e7da03a4d7e7774fcf2554eca7bcf46805bb5cdd5a1888ba3e64cb25