[INFO] cloning repository https://github.com/tolumide-ng/coding-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tolumide-ng/coding-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftolumide-ng%2Fcoding-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftolumide-ng%2Fcoding-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f086f2c577d12dfbcf99f99bba55dae91f64d928
[INFO] testing tolumide-ng/coding-challenge against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftolumide-ng%2Fcoding-challenge" "/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/tolumide-ng/coding-challenge on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tolumide-ng/coding-challenge
[INFO] finished tweaking git repo https://github.com/tolumide-ng/coding-challenge
[INFO] tweaked toml for git repo https://github.com/tolumide-ng/coding-challenge written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/tolumide-ng/coding-challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5af61cf56125855877553ba3c811676d3140f80b2fe1576bfb682493ee5299a5
[INFO] running `Command { std: "docker" "start" "-a" "5af61cf56125855877553ba3c811676d3140f80b2fe1576bfb682493ee5299a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5af61cf56125855877553ba3c811676d3140f80b2fe1576bfb682493ee5299a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5af61cf56125855877553ba3c811676d3140f80b2fe1576bfb682493ee5299a5", kill_on_drop: false }`
[INFO] [stdout] 5af61cf56125855877553ba3c811676d3140f80b2fe1576bfb682493ee5299a5
[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=warn" "-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" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4dd76ba5884823fbdc85db0157889e7fabd517618b3abe65abb1981affb8bc2d
[INFO] running `Command { std: "docker" "start" "-a" "4dd76ba5884823fbdc85db0157889e7fabd517618b3abe65abb1981affb8bc2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling data_structures v0.1.0 (/opt/rustwide/workdir/data_structures)
[INFO] [stderr]    Compiling dynamic_pg v0.1.0 (/opt/rustwide/workdir/dynamic_pg)
[INFO] [stdout] warning: unused variable: `pn`
[INFO] [stdout]    --> data_structures/src/recursion/same_tree.rs:108:15
[INFO] [stdout]     |
[INFO] [stdout] 108 |         (Some(pn), None) => false,
[INFO] [stdout]     |               ^^ help: if this is intentional, prefix it with an underscore: `_pn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `qn`
[INFO] [stdout]    --> data_structures/src/recursion/same_tree.rs:109:21
[INFO] [stdout]     |
[INFO] [stdout] 109 |         (None, Some(qn)) => false,
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_qn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `store` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> data_structures/src/recursion/skyline_problem.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let last = &store[store.len() -1];
[INFO] [stdout]    |                 ----- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 86 |     store.push(Building::new(last.end, last.end, 0));
[INFO] [stdout]    |     ^^^^^                    -------- immutable borrow later used here
[INFO] [stdout]    |     |
[INFO] [stdout]    |     mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `store` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> data_structures/src/recursion/skyline_problem.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 let prev = &store[store.len() - 1];
[INFO] [stdout]    |                             ----- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 62 |                     store.push(Building::new(prev.end, prev.end, 0));
[INFO] [stdout]    |                     ^^^^^                    -------- immutable borrow later used here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parenthesis`
[INFO] [stdout]  --> data_structures/src/recursion/generate_parenthesis.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Parenthesis {}
[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: `generate_parenthesis`
[INFO] [stdout]  --> data_structures/src/recursion/generate_parenthesis.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub fn generate_parenthesis(n: i32) -> Vec<String> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `backtrack`
[INFO] [stdout]   --> data_structures/src/recursion/generate_parenthesis.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn backtrack(
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling others v0.1.0 (/opt/rustwide/workdir/others)
[INFO] [stdout] warning: function is never used: `histogram_brute_force`
[INFO] [stdout]  --> others/src/the_algos/largest_rectangle_histogram.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn histogram_brute_force(heights: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate_area`
[INFO] [stdout]   --> others/src/the_algos/largest_rectangle_histogram.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn calculate_area(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `histogram_stack_approach`
[INFO] [stdout]   --> others/src/the_algos/largest_rectangle_histogram.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn histogram_stack_approach(heights: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pn`
[INFO] [stdout]    --> data_structures/src/recursion/same_tree.rs:108:15
[INFO] [stdout]     |
[INFO] [stdout] 108 |         (Some(pn), None) => false,
[INFO] [stdout]     |               ^^ help: if this is intentional, prefix it with an underscore: `_pn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `qn`
[INFO] [stdout]    --> data_structures/src/recursion/same_tree.rs:109:21
[INFO] [stdout]     |
[INFO] [stdout] 109 |         (None, Some(qn)) => false,
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_qn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `store` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> data_structures/src/recursion/skyline_problem.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let last = &store[store.len() -1];
[INFO] [stdout]    |                 ----- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 86 |     store.push(Building::new(last.end, last.end, 0));
[INFO] [stdout]    |     ^^^^^                    -------- immutable borrow later used here
[INFO] [stdout]    |     |
[INFO] [stdout]    |     mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `store` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> data_structures/src/recursion/skyline_problem.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 let prev = &store[store.len() - 1];
[INFO] [stdout]    |                             ----- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 62 |                     store.push(Building::new(prev.end, prev.end, 0));
[INFO] [stdout]    |                     ^^^^^                    -------- immutable borrow later used here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parenthesis`
[INFO] [stdout]  --> data_structures/src/recursion/generate_parenthesis.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Parenthesis {}
[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: `generate_parenthesis`
[INFO] [stdout]  --> data_structures/src/recursion/generate_parenthesis.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub fn generate_parenthesis(n: i32) -> Vec<String> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `backtrack`
[INFO] [stdout]   --> data_structures/src/recursion/generate_parenthesis.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn backtrack(
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.88s
[INFO] running `Command { std: "docker" "inspect" "4dd76ba5884823fbdc85db0157889e7fabd517618b3abe65abb1981affb8bc2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dd76ba5884823fbdc85db0157889e7fabd517618b3abe65abb1981affb8bc2d", kill_on_drop: false }`
[INFO] [stdout] 4dd76ba5884823fbdc85db0157889e7fabd517618b3abe65abb1981affb8bc2d
[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=warn" "-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" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fec6762908b33ead24b4949f6abd1dda3ef34cc583b7549e481f199cf8926f09
[INFO] running `Command { std: "docker" "start" "-a" "fec6762908b33ead24b4949f6abd1dda3ef34cc583b7549e481f199cf8926f09", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `pn`
[INFO] [stdout]    --> data_structures/src/recursion/same_tree.rs:108:15
[INFO] [stdout]     |
[INFO] [stdout] 108 |         (Some(pn), None) => false,
[INFO] [stdout]     |               ^^ help: if this is intentional, prefix it with an underscore: `_pn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dynamic_pg v0.1.0 (/opt/rustwide/workdir/dynamic_pg)
[INFO] [stdout] warning: unused variable: `qn`
[INFO] [stdout]    --> data_structures/src/recursion/same_tree.rs:109:21
[INFO] [stdout]     |
[INFO] [stdout] 109 |         (None, Some(qn)) => false,
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_qn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling data_structures v0.1.0 (/opt/rustwide/workdir/data_structures)
[INFO] [stdout] warning: cannot borrow `store` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> data_structures/src/recursion/skyline_problem.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let last = &store[store.len() -1];
[INFO] [stdout]    |                 ----- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 86 |     store.push(Building::new(last.end, last.end, 0));
[INFO] [stdout]    |     ^^^^^                    -------- immutable borrow later used here
[INFO] [stdout]    |     |
[INFO] [stdout]    |     mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling others v0.1.0 (/opt/rustwide/workdir/others)
[INFO] [stdout] warning: cannot borrow `store` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> data_structures/src/recursion/skyline_problem.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 let prev = &store[store.len() - 1];
[INFO] [stdout]    |                             ----- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 62 |                     store.push(Building::new(prev.end, prev.end, 0));
[INFO] [stdout]    |                     ^^^^^                    -------- immutable borrow later used here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parenthesis`
[INFO] [stdout]  --> data_structures/src/recursion/generate_parenthesis.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Parenthesis {}
[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: `generate_parenthesis`
[INFO] [stdout]  --> data_structures/src/recursion/generate_parenthesis.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub fn generate_parenthesis(n: i32) -> Vec<String> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `backtrack`
[INFO] [stdout]   --> data_structures/src/recursion/generate_parenthesis.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn backtrack(
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pn`
[INFO] [stdout]    --> data_structures/src/recursion/same_tree.rs:108:15
[INFO] [stdout]     |
[INFO] [stdout] 108 |         (Some(pn), None) => false,
[INFO] [stdout]     |               ^^ help: if this is intentional, prefix it with an underscore: `_pn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `qn`
[INFO] [stdout]    --> data_structures/src/recursion/same_tree.rs:109:21
[INFO] [stdout]     |
[INFO] [stdout] 109 |         (None, Some(qn)) => false,
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_qn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pn`
[INFO] [stdout]    --> data_structures/src/recursion/same_tree.rs:108:15
[INFO] [stdout]     |
[INFO] [stdout] 108 |         (Some(pn), None) => false,
[INFO] [stdout]     |               ^^ help: if this is intentional, prefix it with an underscore: `_pn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `qn`
[INFO] [stdout]    --> data_structures/src/recursion/same_tree.rs:109:21
[INFO] [stdout]     |
[INFO] [stdout] 109 |         (None, Some(qn)) => false,
[INFO] [stdout]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_qn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `store` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> data_structures/src/recursion/skyline_problem.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let last = &store[store.len() -1];
[INFO] [stdout]    |                 ----- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 86 |     store.push(Building::new(last.end, last.end, 0));
[INFO] [stdout]    |     ^^^^^                    -------- immutable borrow later used here
[INFO] [stdout]    |     |
[INFO] [stdout]    |     mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `store` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> data_structures/src/recursion/skyline_problem.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 let prev = &store[store.len() - 1];
[INFO] [stdout]    |                             ----- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 62 |                     store.push(Building::new(prev.end, prev.end, 0));
[INFO] [stdout]    |                     ^^^^^                    -------- immutable borrow later used here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `store` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> data_structures/src/recursion/skyline_problem.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let last = &store[store.len() -1];
[INFO] [stdout]    |                 ----- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 86 |     store.push(Building::new(last.end, last.end, 0));
[INFO] [stdout]    |     ^^^^^                    -------- immutable borrow later used here
[INFO] [stdout]    |     |
[INFO] [stdout]    |     mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `store` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> data_structures/src/recursion/skyline_problem.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 let prev = &store[store.len() - 1];
[INFO] [stdout]    |                             ----- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 62 |                     store.push(Building::new(prev.end, prev.end, 0));
[INFO] [stdout]    |                     ^^^^^                    -------- immutable borrow later used here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.05s
[INFO] running `Command { std: "docker" "inspect" "fec6762908b33ead24b4949f6abd1dda3ef34cc583b7549e481f199cf8926f09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fec6762908b33ead24b4949f6abd1dda3ef34cc583b7549e481f199cf8926f09", kill_on_drop: false }`
[INFO] [stdout] fec6762908b33ead24b4949f6abd1dda3ef34cc583b7549e481f199cf8926f09
[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=warn" "-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" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b05c2d8d28774fa5188c88e2aecb0c832b9ef0fe24e6510bb6bd3dc04eb4ddf9
[INFO] running `Command { std: "docker" "start" "-a" "b05c2d8d28774fa5188c88e2aecb0c832b9ef0fe24e6510bb6bd3dc04eb4ddf9", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `pn`
[INFO] [stderr]    --> data_structures/src/recursion/same_tree.rs:108:15
[INFO] [stderr]     |
[INFO] [stderr] 108 |         (Some(pn), None) => false,
[INFO] [stderr]     |               ^^ help: if this is intentional, prefix it with an underscore: `_pn`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `qn`
[INFO] [stderr]    --> data_structures/src/recursion/same_tree.rs:109:21
[INFO] [stderr]     |
[INFO] [stderr] 109 |         (None, Some(qn)) => false,
[INFO] [stderr]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_qn`
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `store` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> data_structures/src/recursion/skyline_problem.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     let last = &store[store.len() -1];
[INFO] [stderr]    |                 ----- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 86 |     store.push(Building::new(last.end, last.end, 0));
[INFO] [stderr]    |     ^^^^^                    -------- immutable borrow later used here
[INFO] [stderr]    |     |
[INFO] [stderr]    |     mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `store` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> data_structures/src/recursion/skyline_problem.rs:62:21
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 let prev = &store[store.len() - 1];
[INFO] [stderr]    |                             ----- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 62 |                     store.push(Building::new(prev.end, prev.end, 0));
[INFO] [stderr]    |                     ^^^^^                    -------- immutable borrow later used here
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parenthesis`
[INFO] [stderr]  --> data_structures/src/recursion/generate_parenthesis.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Parenthesis {}
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `generate_parenthesis`
[INFO] [stderr]  --> data_structures/src/recursion/generate_parenthesis.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 |     pub fn generate_parenthesis(n: i32) -> Vec<String> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `backtrack`
[INFO] [stderr]   --> data_structures/src/recursion/generate_parenthesis.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn backtrack(
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `data_structures` (lib) generated 7 warnings
[INFO] [stderr] warning: `data_structures` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr] warning: `data_structures` (bin "data_structures" test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/data_structures-e0a04aeb7e29bb93)
[INFO] [stdout] running 109 tests
[INFO] [stdout] test binary_tree::in_order_traversal::test_inorder_traversal::double_element_recursive_inorder_test ... ok
[INFO] [stdout] test binary_tree::in_order_traversal::test_inorder_traversal::recursive_inorder_test ... ok
[INFO] [stdout] test binary_tree::level_order_traversal::breadth_first_search::test_breadth_first_search ... ok
[INFO] [stdout] test binary_tree::in_order_traversal::test_inorder_traversal::one_element_recursive_inorder_test ... ok
[INFO] [stdout] test binary_tree::level_order_traversal::breadth_first_search::single_elem_beadth_first_test ... ok
[INFO] [stdout] test binary_tree::lowest_common_ancestor::test_lca::gets_none_if_unavailable ... ok
[INFO] [stdout] test binary_tree::level_order_traversal::breadth_first_search::double_elem_breath_first_test ... ok
[INFO] [stdout] test binary_tree::post_order_traversal::test_post_order_traversal::test_post_order_traversal ... ok
[INFO] [stdout] test binary_tree::pre_order_traversal::test_preorder_traversal::iterative_preorder_test ... ok
[INFO] [stdout] test binary_tree::pre_order_traversal::test_preorder_traversal::recursive_preorder_test ... ok
[INFO] [stdout] test binary_tree::priority_queue::test_min_priority::order_after_removal ... ok
[INFO] [stdout] test binary_tree::priority_queue::test_min_priority::test_change_priority ... ok
[INFO] [stdout] test binary_tree::serialize_deserialize::serialize_deserialize_tests::test_serialize ... ok
[INFO] [stdout] test linked_lists::dnode::dtests::test_new_dnode_integer ... ok
[INFO] [stdout] test linked_lists::linked_palindrome::linked_palindrom_tests::is_palindrome_fifth ... ok
[INFO] [stdout] test linked_lists::doubly_linked_list::test_doubly_linked_list::insert_elemenet ... ok
[INFO] [stdout] test linked_lists::dnode::dtests::test_new_dnode_string ... ok
[INFO] [stdout] test linked_lists::linked_palindrome::linked_palindrom_tests::is_palindrome_first ... ok
[INFO] [stdout] test linked_lists::linked_palindrome::linked_palindrom_tests::is_palindrome_second ... ok
[INFO] [stdout] test linked_lists::doubly_linked_list::test_doubly_linked_list::test_new_empty_dlist ... ok
[INFO] [stdout] test linked_lists::linked_palindrome::linked_palindrom_tests::is_palindrome_fourth ... ok
[INFO] [stdout] test linked_lists::doubly_linked_list::test_doubly_linked_list::test_pop_head_multi_elem ... ok
[INFO] [stdout] test linked_lists::linked_palindrome::linked_palindrom_tests::is_palindrome_sixth ... ok
[INFO] [stdout] test linked_lists::doubly_linked_list::test_doubly_linked_list::test_pop_head_one_elem ... ok
[INFO] [stdout] test linked_lists::linked_palindrome::linked_palindrom_tests::is_palindrome_third ... ok
[INFO] [stdout] test linked_lists::linked_rcs::test_linked_rcs_mod::test_new_list ... ok
[INFO] [stdout] test linked_lists::linked_rcs::test_linked_rcs_mod::test_append_list ... ok
[INFO] [stdout] test linked_lists::linked_palindrome::linked_palindrom_tests::is_palindrome_eight ... ok
[INFO] [stdout] test linked_lists::doubly_linked_list::test_doubly_linked_list::test_append_to_end ... ok
[INFO] [stdout] test linked_lists::doubly_linked_list::test_doubly_linked_list::test_delete_nth_element ... ok
[INFO] [stdout] test linked_lists::doubly_linked_list::test_doubly_linked_list::test_get_nth_element ... ok
[INFO] [stdout] test linked_lists::doubly_linked_list::test_doubly_linked_list::test_pop_end_single_elem ... ok
[INFO] [stdout] test queues_stacks::circular_queue::test_queue::test_enqeue_rear ... ok
[INFO] [stdout] test queues_stacks::circular_queue::test_queue::test_queue_edge_case ... ok
[INFO] [stdout] test queues_stacks::daily_temperatures::test_daily_temps_cont::test_daily_temps ... ok
[INFO] [stdout] test queues_stacks::number_of_islands_dfs::test_islands_number::test_island_number ... ok
[INFO] [stdout] test binary_tree::priority_queue::test_min_priority::min_priority_order ... ok
[INFO] [stdout] test queues_stacks::stack_with_queues::test::test_stack_with_queue ... ok
[INFO] [stdout] test queues_stacks::target_sum::test_target_sum_cont::test_dynamic_target_sum ... ok
[INFO] [stdout] test queues_stacks::decode_string::test_decode_string_cont::test_decode_string ... ok
[INFO] [stdout] test linked_lists::node::tests::test_new_node ... ok
[INFO] [stdout] test linked_lists::single_ll::test_singly_ll_mod::singly_ll ... ok
[INFO] [stdout] test queues_stacks::keys_and_rooms::can_visit_all_rooms_cont::test_keys_and_rooms ... ok
[INFO] [stdout] test binary_tree::priority_queue::test_min_priority::min_priority_insertion ... ok
[INFO] [stdout] test linked_lists::linked_rcs::test_linked_rcs_mod::test_new_empty_list ... ok
[INFO] [stdout] test queues_stacks::target_sum::test_target_sum_cont::test_memoized_target_sum ... ok
[INFO] [stdout] test linked_lists::nth_from_last::test_nth_pointer::get_not_enough_nth_elem ... ok
[INFO] [stdout] test queues_stacks::valid_parentheses::test_valid_parentheses_cont::test_valid_parentheses ... ok
[INFO] [stdout] test recursion::climbing_stairs::test_climb_stairs_mod::test_climb_stairs ... ok
[INFO] [stdout] test recursion::combination::test_combination_mod::test_combination ... ok
[INFO] [stdout] test queues_stacks::walls_and_gates::test_walls::test_walls_and_gates ... ok
[INFO] [stdout] test recursion::fibonacci::test_fibonacci_mod::test_fib_fast ... ok
[INFO] [stdout] test linked_lists::remove_linked_elements::remove_linked_elem ... ok
[INFO] [stdout] test linked_lists::reversed_linked_lists::premo_wayne ... ok
[INFO] [stdout] test linked_lists::linked_palindrome::linked_palindrom_tests::is_palindrome_seventh ... ok
[INFO] [stdout] test recursion::create_bst::test_create_bst_mod::test_creates_bst ... ok
[INFO] [stdout] test queues_stacks::flood_fill::test_flood_fill_cont::test_flood_fill ... ok
[INFO] [stdout] test queues_stacks::number_of_islands_bfs::test_islands_number_bfs_cont::test_island_number_bfs ... ok
[INFO] [stdout] test queues_stacks::perfect_squares::test_perfect_squares_cont::test_perfect_squares ... ok
[INFO] [stdout] test queues_stacks::reverse_polish_notation::test_rpn_cont::test_rpn ... ok
[INFO] [stdout] test queues_stacks::moving_data_stream::test_circular_queue::test_cq ... ok
[INFO] [stdout] test recursion::fibonacci::test_fibonacci_mod::test_tail_optimised_fibonacci ... ok
[INFO] [stdout] test recursion::fibonacci::test_fibonacci_mod::test_fib_memo ... ok
[INFO] [stdout] test queues_stacks::matrix_01::test_matrix_01_cont::test_matrix_01 ... ok
[INFO] [stdout] test recursion::kth_symbol_in_grammar::test_kth_grammar_mod::test_kth_grammar ... ok
[INFO] [stdout] test linked_lists::nth_from_last::test_nth_pointer::get_nth_elem_empty ... ok
[INFO] [stdout] test queues_stacks::target_sum::test_target_sum_cont::test_target_sum ... ok
[INFO] [stdout] test queues_stacks::walls_and_gates_dfs::test_walls_dfs::test_walls_and_gates_dfs ... ok
[INFO] [stdout] test recursion::largest_histogram::test_largest_histogram_mod::test_largest_histogram ... ok
[INFO] [stdout] test linked_lists::nth_from_last::test_nth_pointer::get_nth_elem_from_end ... ok
[INFO] [stdout] test linked_lists::odd_even_linked_lists::odd_even_linked_lists ... ok
[INFO] [stdout] test recursion::binary_tree_depth::test_max_depth_mod::test_max_depth_recursion ... ok
[INFO] [stdout] test recursion::binary_tree_depth::test_max_depth_mod::test_max_depth_bfs ... ok
[INFO] [stdout] test queues_stacks::min_stack::test_min_stack_cont::test_min_stack ... ok
[INFO] [stdout] test binary_tree::serialize_deserialize::serialize_deserialize_tests::test_deserialize ... ok
[INFO] [stdout] test recursion::generate_parenthesis::test_generate_parenthesis_mod::test_generate_parenthesis ... ok
[INFO] [stdout] test recursion::pascals_triangle::test_get_row_mod::test_get_row_inexistent ... ok
[INFO] [stdout] test recursion::pascals_triangle::test_get_row_mod::test_get_row_zero ... ok
[INFO] [stdout] test recursion::quick_sort::test_quick_sort ... ok
[INFO] [stdout] test recursion::search_2d_matrix::test_search_matrix_mod::test_search_matrix ... ok
[INFO] [stdout] test recursion::n_queens::test_n_queens_mod::n_queens_test ... ok
[INFO] [stdout] test recursion::search_2d_matrix::test_search_matrix_mod::test_search_empty_matrix ... ok
[INFO] [stdout] test recursion::pascals_triangle::test_get_row_mod::test_get_row_one ... ok
[INFO] [stdout] test recursion::permutations::test_permute_mod::test_permute ... ok
[INFO] [stdout] test recursion::merge_two_sorted_lists::merge_two_sorted_list_mod::test_merge_lists ... ok
[INFO] [stdout] test recursion::search_bst::test_search_bst_cont::test_search_bst ... ok
[INFO] [stdout] test recursion::sort_an_array::test_sort_array_mod::test_sort_array ... ok
[INFO] [stdout] test recursion::swap_node_pairs::test_swap_pairs_cont::test_swap_pairs ... ok
[INFO] [stdout] test recursion::validate_bst::test_validate_bst_mod::test_minimum_possible_node ... ok
[INFO] [stdout] test recursion::merge_two_sorted_lists::merge_two_sorted_list_mod::test_merge_two_lists_approach_2 ... ok
[INFO] [stdout] test recursion::swap_node_pairs::test_swap_pairs_cont::test_function_can_make_linked_list ... ok
[INFO] [stdout] test recursion::reverse_string::test_reverse_string_cont::test_reverse_string ... ok
[INFO] [stdout] test recursion::kth_largest_element::test_find_kth_largest_mod::test_find_kth_largest ... ok
[INFO] [stdout] test recursion::pascals_triangle::test_get_row_mod::test_get_row ... ok
[INFO] [stdout] test recursion::reverse_linked_list::test_reverse_list_cont::test_reverse_list ... ok
[INFO] [stdout] test recursion::merge_sort::test_merge_sort_mod::test_top_down_approach ... ok
[INFO] [stdout] test recursion::merge_two_sorted_lists::merge_two_sorted_list_mod::test_short_list ... ok
[INFO] [stdout] test recursion::permutations::test_permute_mod::test_emoty_permute ... ok
[INFO] [stdout] test recursion::validate_bst::test_validate_bst_mod::test_invalid_bst ... ok
[INFO] [stdout] test recursion::letter_combinations::test_letter_comb_mod::test_letter_comb ... ok
[INFO] [stdout] test recursion::validate_bst::test_validate_bst_mod::test_validate_possible_bst ... ok
[INFO] [stdout] test recursion::validate_bst::test_validate_bst_mod::test_multi_child ... ok
[INFO] [stdout] test recursion::validate_bst::test_validate_bst_mod::test_single_node ... ok
[INFO] [stdout] test recursion::validate_bst::test_validate_bst_mod::test_valid_bst ... ok
[INFO] [stdout] test recursion::pow_x_n::test_pow_x_n_mod::test_pow_x_n ... ok
[INFO] [stdout] test recursion::skyline_problem::test_skyline_mod::test_skyline ... FAILED
[INFO] [stdout] test recursion::unique_binary_tree::test_unique_bsts_mod::test_unique_bsts ... ok
[INFO] [stdout] test recursion::sudoku_player::test_sudoku_mod::test_sudoku ... ok
[INFO] [stdout] test queues_stacks::open_the_lock::test_open_lock::test_the_open_lock ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- recursion::skyline_problem::test_skyline_mod::test_skyline stdout ----
[INFO] [stdout] the buildings [
[INFO] [stdout]     [
[INFO] [stdout]         1,
[INFO] [stdout]         1,
[INFO] [stdout]     ],
[INFO] [stdout]     [
[INFO] [stdout]         1,
[INFO] [stdout]         2,
[INFO] [stdout]     ],
[INFO] [stdout]     [
[INFO] [stdout]         1,
[INFO] [stdout]         3,
[INFO] [stdout]     ],
[INFO] [stdout]     [
[INFO] [stdout]         2,
[INFO] [stdout]         0,
[INFO] [stdout]     ],
[INFO] [stdout] ]
[INFO] [stdout] thread 'recursion::skyline_problem::test_skyline_mod::test_skyline' panicked at 'assertion failed: `(left == right)`
[INFO] [stdout]   left: `3`,
[INFO] [stdout]  right: `4`', data_structures/src/recursion/skyline_problem.rs:141:10
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5616b67f1430 - std::backtrace_rs::backtrace::libunwind::trace::hff4d1766e93f64f1
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stdout]    1:     0x5616b67f1430 - std::backtrace_rs::backtrace::trace_unsynchronized::h56bbc8eb78770bcb
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5616b67f1430 - std::sys_common::backtrace::_print_fmt::h5c8e75464faca780
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x5616b67f1430 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h48b88277def8b362
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x5616b681445c - core::fmt::write::h3381b3176fe2b3d3
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/fmt/mod.rs:1115:17
[INFO] [stdout]    5:     0x5616b67ee395 - std::io::Write::write_fmt::h5f34a676f60246b5
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/io/mod.rs:1665:15
[INFO] [stdout]    6:     0x5616b67f35ab - std::sys_common::backtrace::_print::ha537687d6c17dd0d
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x5616b67f35ab - std::sys_common::backtrace::print::h61376ae57d131d72
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x5616b67f35ab - std::panicking::default_hook::{{closure}}::h0f7208c0b9644a54
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:208:50
[INFO] [stdout]    9:     0x5616b67f30bc - std::panicking::default_hook::hdac7fc06578c14ce
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:222:9
[INFO] [stdout]   10:     0x5616b67f3c74 - std::panicking::rust_panic_with_hook::h72b21c283da3d1ef
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:622:17
[INFO] [stdout]   11:     0x5616b67f3757 - std::panicking::begin_panic_handler::{{closure}}::he5778f1729cff84a
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:519:13
[INFO] [stdout]   12:     0x5616b67f190c - std::sys_common::backtrace::__rust_end_short_backtrace::h2d11ca8b453b4b1d
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stdout]   13:     0x5616b67f36b9 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:515:5
[INFO] [stdout]   14:     0x5616b66d24b1 - core::panicking::panic_fmt::hf9de31d4acbce4db
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/panicking.rs:92:14
[INFO] [stdout]   15:     0x5616b6812518 - core::panicking::assert_failed_inner::h62e8cb2847a6e7ec
[INFO] [stdout]   16:     0x5616b677fbaa - core::panicking::assert_failed::h17145c9a09fa6d2a
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/panicking.rs:117:5
[INFO] [stdout]   17:     0x5616b6757512 - data_structures::recursion::skyline_problem::test_skyline_mod::test_skyline::he390d700e747007d
[INFO] [stdout]                                at /opt/rustwide/workdir/data_structures/src/recursion/skyline_problem.rs:141:10
[INFO] [stdout]   18:     0x5616b67571ea - data_structures::recursion::skyline_problem::test_skyline_mod::test_skyline::{{closure}}::h5b5cad99d2b53d1d
[INFO] [stdout]                                at /opt/rustwide/workdir/data_structures/src/recursion/skyline_problem.rs:99:5
[INFO] [stdout]   19:     0x5616b678bdee - core::ops::function::FnOnce::call_once::hf3ed498c0db8c085
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   20:     0x5616b67d5cf3 - core::ops::function::FnOnce::call_once::hbb52c4519d3137b0
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   21:     0x5616b67d5cf3 - test::__rust_begin_short_backtrace::h86fe3a2a5a5121af
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/test/src/lib.rs:578:5
[INFO] [stdout]   22:     0x5616b67d47a8 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hfd956bc3d57399be
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   23:     0x5616b67d47a8 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h40dc93e0ddb5938a
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:347:9
[INFO] [stdout]   24:     0x5616b67d47a8 - std::panicking::try::do_call::h90d07750cb47c562
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:401:40
[INFO] [stdout]   25:     0x5616b67d47a8 - std::panicking::try::h063c84733ad2a629
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:365:19
[INFO] [stdout]   26:     0x5616b67d47a8 - std::panic::catch_unwind::h0c464836a84e7c08
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:434:14
[INFO] [stdout]   27:     0x5616b67d47a8 - test::run_test_in_process::h5cb06ef620b157fc
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/test/src/lib.rs:601:18
[INFO] [stdout]   28:     0x5616b67d47a8 - test::run_test::run_test_inner::{{closure}}::h76f677f4b93f9828
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/test/src/lib.rs:493:39
[INFO] [stdout]   29:     0x5616b67a2f3d - test::run_test::run_test_inner::{{closure}}::h366d01fe04f4d67a
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/test/src/lib.rs:520:37
[INFO] [stdout]   30:     0x5616b67a2f3d - std::sys_common::backtrace::__rust_begin_short_backtrace::h7dfa0de4eb395af2
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stdout]   31:     0x5616b67a7708 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hf0a74bb58798037f
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/thread/mod.rs:476:17
[INFO] [stdout]   32:     0x5616b67a7708 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb024e854818586ac
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:347:9
[INFO] [stdout]   33:     0x5616b67a7708 - std::panicking::try::do_call::hb2dd9f1d0d48e41d
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:401:40
[INFO] [stdout]   34:     0x5616b67a7708 - std::panicking::try::h4717ae7bac8b2bf3
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:365:19
[INFO] [stdout]   35:     0x5616b67a7708 - std::panic::catch_unwind::h0dc8a061326ce8d8
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:434:14
[INFO] [stdout]   36:     0x5616b67a7708 - std::thread::Builder::spawn_unchecked::{{closure}}::haa369e2d6fd00aa1
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/thread/mod.rs:475:30
[INFO] [stdout]   37:     0x5616b67a7708 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h36dcf3de8b056f17
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   38:     0x5616b67f87e7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h65c29e4642be2358
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   39:     0x5616b67f87e7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd0f8f7fbbd9fffbf
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   40:     0x5616b67f87e7 - std::sys::unix::thread::Thread::new::thread_start::h2fd22fee3ca77b65
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys/unix/thread.rs:74:17
[INFO] [stdout]   41:     0x7f9552773609 - start_thread
[INFO] [stdout]   42:     0x7f9552545293 - clone
[INFO] [stdout]   43:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     recursion::skyline_problem::test_skyline_mod::test_skyline
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 108 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.58s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '-p data_structures --lib'
[INFO] running `Command { std: "docker" "inspect" "b05c2d8d28774fa5188c88e2aecb0c832b9ef0fe24e6510bb6bd3dc04eb4ddf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b05c2d8d28774fa5188c88e2aecb0c832b9ef0fe24e6510bb6bd3dc04eb4ddf9", kill_on_drop: false }`
[INFO] [stdout] b05c2d8d28774fa5188c88e2aecb0c832b9ef0fe24e6510bb6bd3dc04eb4ddf9
