[INFO] cloning repository https://github.com/Shannarra/algo_rusting
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Shannarra/algo_rusting" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShannarra%2Falgo_rusting", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShannarra%2Falgo_rusting'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66a315b35d3c8b60f99bdd0eb3fd9014ea522e1f
[INFO] checking Shannarra/algo_rusting against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShannarra%2Falgo_rusting" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Shannarra/algo_rusting on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Shannarra/algo_rusting
[INFO] finished tweaking git repo https://github.com/Shannarra/algo_rusting
[INFO] tweaked toml for git repo https://github.com/Shannarra/algo_rusting written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Shannarra/algo_rusting already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b83ef6a5c02bdf6fe4bd95cdbdd406c3d769ea983319eac7ee3ff076d2abf3e4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b83ef6a5c02bdf6fe4bd95cdbdd406c3d769ea983319eac7ee3ff076d2abf3e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b83ef6a5c02bdf6fe4bd95cdbdd406c3d769ea983319eac7ee3ff076d2abf3e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b83ef6a5c02bdf6fe4bd95cdbdd406c3d769ea983319eac7ee3ff076d2abf3e4", kill_on_drop: false }`
[INFO] [stdout] b83ef6a5c02bdf6fe4bd95cdbdd406c3d769ea983319eac7ee3ff076d2abf3e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48fd35a1c39b4d4b28df267d97e1fe3ae551083c07fc0da4f2e2a6ac2ff5edc0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "48fd35a1c39b4d4b28df267d97e1fe3ae551083c07fc0da4f2e2a6ac2ff5edc0", kill_on_drop: false }`
[INFO] [stderr]     Checking algo_rusting v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::vec::IntoIter`
[INFO] [stdout]  --> src/custom/set.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::vec::IntoIter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ReadUtils` is imported redundantly
[INFO] [stdout]   --> src/files/mod.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |     use crate::files::ReadUtils;
[INFO] [stdout]    |         ----------------------- the item `ReadUtils` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 25 |         use super::ReadUtils;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ReadUtils` is imported redundantly
[INFO] [stdout]   --> src/files/mod.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |     use crate::files::ReadUtils;
[INFO] [stdout]    |         ----------------------- the item `ReadUtils` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 34 |         use super::ReadUtils;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ReadUtils` is imported redundantly
[INFO] [stdout]   --> src/files/mod.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |     use crate::files::ReadUtils;
[INFO] [stdout]    |         ----------------------- the item `ReadUtils` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 43 |         use super::ReadUtils;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec::IntoIter`
[INFO] [stdout]  --> src/custom/set.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::vec::IntoIter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `capacity`
[INFO] [stdout]   --> src/custom/set.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn capacity(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::files::ReadUtils`
[INFO] [stdout]   --> src/files/mod.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     use crate::files::ReadUtils;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/macros.rs:82:21
[INFO] [stdout]     |
[INFO] [stdout] 82  |                 for i in 0..$n {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] ...
[INFO] [stdout] 164 |         assert_eq!(dict, hash_map![1,3]);
[INFO] [stdout]     |                          -------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/dynamics/mod.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let mut items = vec![1,2,3,4,5];
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dynamics/mod.rs:153:13
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let mut squared = hash_map![0 => 0, 1 => 1, 2 => 4];
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/macros.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let mut dict = std::collections::HashMap::new();
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    | 
[INFO] [stdout]   ::: src/files/mod.rs:49:54
[INFO] [stdout]    |
[INFO] [stdout] 49 |         assert_ne!(file.read_to_dict(path).unwrap(), hash_map![]);
[INFO] [stdout]    |                                                      ----------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/macros.rs:59:17
[INFO] [stdout]     |
[INFO] [stdout] 59  |             let mut dict = std::collections::HashMap::new();
[INFO] [stdout]     |                 ----^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 170 |         let map: std::collections::HashMap<i32, i32> = hash_map![];
[INFO] [stdout]     |                                                        ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_test_case_1`
[INFO] [stdout]   --> src/dynamics/mod.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn js_test_case_1() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_test_case_2`
[INFO] [stdout]   --> src/dynamics/mod.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn js_test_case_2() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_test_case_3`
[INFO] [stdout]   --> src/dynamics/mod.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn js_test_case_3() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_test_case_4`
[INFO] [stdout]   --> src/dynamics/mod.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn js_test_case_4() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_test_case_5`
[INFO] [stdout]   --> src/dynamics/mod.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn js_test_case_5() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_test_case_6`
[INFO] [stdout]    --> src/dynamics/mod.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn js_test_case_6() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_test_case_7`
[INFO] [stdout]    --> src/dynamics/mod.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn js_test_case_7() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_test_case_8`
[INFO] [stdout]    --> src/dynamics/mod.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 |     fn js_test_case_8() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_test_case_9`
[INFO] [stdout]    --> src/dynamics/mod.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn js_test_case_9() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_test_case_10`
[INFO] [stdout]    --> src/dynamics/mod.rs:133:8
[INFO] [stdout]     |
[INFO] [stdout] 133 |     fn js_test_case_10() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_mult_test_case_1`
[INFO] [stdout]    --> src/dynamics/mod.rs:140:8
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn js_mult_test_case_1() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_mult_test_case_2`
[INFO] [stdout]    --> src/dynamics/mod.rs:149:8
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn js_mult_test_case_2() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_mult_test_case_3`
[INFO] [stdout]    --> src/dynamics/mod.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn js_mult_test_case_3() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `js_mult_test_case_4`
[INFO] [stdout]    --> src/dynamics/mod.rs:165:8
[INFO] [stdout]     |
[INFO] [stdout] 165 |     fn js_mult_test_case_4() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `expr_queue`
[INFO] [stdout]    --> src/macros.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn expr_queue() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `value_collection`
[INFO] [stdout]    --> src/macros.rs:149:8
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn value_collection() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `elem_and_size`
[INFO] [stdout]    --> src/macros.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn elem_and_size() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `empty`
[INFO] [stdout]    --> src/macros.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn empty() {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `capacity`
[INFO] [stdout]   --> src/custom/set.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn capacity(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "48fd35a1c39b4d4b28df267d97e1fe3ae551083c07fc0da4f2e2a6ac2ff5edc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48fd35a1c39b4d4b28df267d97e1fe3ae551083c07fc0da4f2e2a6ac2ff5edc0", kill_on_drop: false }`
[INFO] [stdout] 48fd35a1c39b4d4b28df267d97e1fe3ae551083c07fc0da4f2e2a6ac2ff5edc0