[INFO] cloning repository https://github.com/euclidr/leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/euclidr/leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuclidr%2Fleetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuclidr%2Fleetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fd9e1e88018576c11c72e8c294aab6808f0d78f1
[INFO] checking euclidr/leetcode against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuclidr%2Fleetcode" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/euclidr/leetcode on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/euclidr/leetcode
[INFO] finished tweaking git repo https://github.com/euclidr/leetcode
[INFO] tweaked toml for git repo https://github.com/euclidr/leetcode written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/euclidr/leetcode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: examples
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded spin v0.5.0
[INFO] [stderr]   Downloaded rand_chacha v0.2.0
[INFO] [stderr]   Downloaded libc v0.2.59
[INFO] [stderr]   Downloaded getrandom v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a690600fee9de9539e33a986644da50f537b98fbf5f64b989bdf639803599444
[INFO] running `Command { std: "docker" "start" "-a" "a690600fee9de9539e33a986644da50f537b98fbf5f64b989bdf639803599444", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a690600fee9de9539e33a986644da50f537b98fbf5f64b989bdf639803599444", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a690600fee9de9539e33a986644da50f537b98fbf5f64b989bdf639803599444", kill_on_drop: false }`
[INFO] [stdout] a690600fee9de9539e33a986644da50f537b98fbf5f64b989bdf639803599444
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3c6dd2a935df04aff51c8464191eaa6a556d9e527b18eae92f34b28c632d8e0
[INFO] running `Command { std: "docker" "start" "-a" "e3c6dd2a935df04aff51c8464191eaa6a556d9e527b18eae92f34b28c632d8e0", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr] note: Switching to Edition 2021 will enable the use of the version 2 feature resolver in Cargo.
[INFO] [stderr] This may cause some dependencies to be built with fewer features enabled than previously.
[INFO] [stderr] More information about the resolver changes may be found at https://doc.rust-lang.org/nightly/edition-guide/rust-2021/default-cargo-resolver.html
[INFO] [stderr] When building the following dependencies, the given features will no longer be used:
[INFO] [stderr] 
[INFO] [stderr]   lazy_static v1.3.0: spin, spin_no_std
[INFO] [stderr] 
[INFO] [stderr] warning: unused manifest key: examples
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling rand_chacha v0.2.0
[INFO] [stderr]     Checking getrandom v0.1.6
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking leetcode v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating examples/p881.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p566.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p1028.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p561.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p386.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p530.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p849.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p710.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p818.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p315.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p826.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p941.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p199.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p218.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p282.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p714.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p241.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p784.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p822.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p399.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p456.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p958.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p437.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p820.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p632.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p567.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p815.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p520.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p692.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p303.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p1079.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p354.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p542.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p678.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p743.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p890.rs from 2018 edition to 2021
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> examples/p710.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 53 | /             match self.blacklist.binary_search(&rs) {
[INFO] [stdout] 54 | |                 Ok(_) => continue,
[INFO] [stdout] 55 | |                 Err(_) => return rs,
[INFO] [stdout] 56 | |             }
[INFO] [stdout]    | |_____________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] ...
[INFO] [stdout] 59 |           unreachable!()
[INFO] [stdout]    |           ^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `unreachable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> examples/p710.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new(N: i32, mut blacklist: Vec<i32>) -> Self {
[INFO] [stdout]    |            ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating examples/p835.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p691.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/p1094.rs from 2018 edition to 2021
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]   --> examples/p437.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `path_sum`
[INFO] [stdout]   --> examples/p437.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn path_sum(root: Option<Rc<RefCell<TreeNode>>>, sum: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> examples/p1094.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.75s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr] warning: unused manifest key: examples
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking getrandom v0.1.6
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking rand_chacha v0.2.0
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking leetcode v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> examples/p710.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 53 | /             match self.blacklist.binary_search(&rs) {
[INFO] [stdout] 54 | |                 Ok(_) => continue,
[INFO] [stdout] 55 | |                 Err(_) => return rs,
[INFO] [stdout] 56 | |             }
[INFO] [stdout]    | |_____________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] ...
[INFO] [stdout] 59 |           unreachable!()
[INFO] [stdout]    |           ^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `unreachable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> examples/p710.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new(N: i32, mut blacklist: Vec<i32>) -> Self {
[INFO] [stdout]    |            ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> examples/p1094.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]   --> examples/p437.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `path_sum`
[INFO] [stdout]   --> examples/p437.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn path_sum(root: Option<Rc<RefCell<TreeNode>>>, sum: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.62s
[INFO] running `Command { std: "docker" "inspect" "e3c6dd2a935df04aff51c8464191eaa6a556d9e527b18eae92f34b28c632d8e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3c6dd2a935df04aff51c8464191eaa6a556d9e527b18eae92f34b28c632d8e0", kill_on_drop: false }`
[INFO] [stdout] e3c6dd2a935df04aff51c8464191eaa6a556d9e527b18eae92f34b28c632d8e0