[INFO] cloning repository https://github.com/saiichi/rust-leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/saiichi/rust-leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaiichi%2Frust-leetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaiichi%2Frust-leetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1b694030ae519ff98730b7c4f0673ed17eafde71
[INFO] testing saiichi/rust-leetcode against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaiichi%2Frust-leetcode" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/saiichi/rust-leetcode
[INFO] finished tweaking git repo https://github.com/saiichi/rust-leetcode
[INFO] tweaked toml for git repo https://github.com/saiichi/rust-leetcode written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/saiichi/rust-leetcode on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/saiichi/rust-leetcode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca5530c62561c210fd4b9897e0774db116ca0d131aa6be18f59bf8341dc98eb6
[INFO] running `Command { std: "docker" "start" "-a" "ca5530c62561c210fd4b9897e0774db116ca0d131aa6be18f59bf8341dc98eb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca5530c62561c210fd4b9897e0774db116ca0d131aa6be18f59bf8341dc98eb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca5530c62561c210fd4b9897e0774db116ca0d131aa6be18f59bf8341dc98eb6", kill_on_drop: false }`
[INFO] [stdout] ca5530c62561c210fd4b9897e0774db116ca0d131aa6be18f59bf8341dc98eb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e590f65dea3c2472479e9e449cf7426fa00661779b2d9f9e8e69d7f6c442ff4
[INFO] running `Command { std: "docker" "start" "-a" "3e590f65dea3c2472479e9e449cf7426fa00661779b2d9f9e8e69d7f6c442ff4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling rust-leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `authenticated`
[INFO] [stdout]  --> src/value_tour.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let authenticated = true;
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_authenticated`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `total` is assigned to, but never used
[INFO] [stdout]   --> src/value_tour.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut total = 0;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_total` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total` is never read
[INFO] [stdout]   --> src/value_tour.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     total += 1;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Gender` is never used
[INFO] [stdout]  --> src/types.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Gender {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ConnectionState` is never used
[INFO] [stdout]  --> src/types.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum ConnectionState {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HalfOpen` is never constructed
[INFO] [stdout]   --> src/types.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct HalfOpen {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FullSession` is never constructed
[INFO] [stdout]   --> src/types.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct FullSession {}
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> src/types.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.22s
[INFO] running `Command { std: "docker" "inspect" "3e590f65dea3c2472479e9e449cf7426fa00661779b2d9f9e8e69d7f6c442ff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e590f65dea3c2472479e9e449cf7426fa00661779b2d9f9e8e69d7f6c442ff4", kill_on_drop: false }`
[INFO] [stdout] 3e590f65dea3c2472479e9e449cf7426fa00661779b2d9f9e8e69d7f6c442ff4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d8a6e32b333b7696551cd15a863095f727c97c5900c5c5842666f5866beef02
[INFO] running `Command { std: "docker" "start" "-a" "2d8a6e32b333b7696551cd15a863095f727c97c5900c5c5842666f5866beef02", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `authenticated`
[INFO] [stdout]  --> src/value_tour.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let authenticated = true;
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_authenticated`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `total` is assigned to, but never used
[INFO] [stdout]   --> src/value_tour.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut total = 0;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_total` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total` is never read
[INFO] [stdout]   --> src/value_tour.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     total += 1;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Gender` is never used
[INFO] [stdout]  --> src/types.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Gender {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ConnectionState` is never used
[INFO] [stdout]  --> src/types.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum ConnectionState {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HalfOpen` is never constructed
[INFO] [stdout]   --> src/types.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct HalfOpen {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FullSession` is never constructed
[INFO] [stdout]   --> src/types.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct FullSession {}
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> src/types.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "2d8a6e32b333b7696551cd15a863095f727c97c5900c5c5842666f5866beef02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d8a6e32b333b7696551cd15a863095f727c97c5900c5c5842666f5866beef02", kill_on_drop: false }`
[INFO] [stdout] 2d8a6e32b333b7696551cd15a863095f727c97c5900c5c5842666f5866beef02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 12dc4efdd51f58c17ff08755f76f84fecdeb1776d99da46f1835838a46c102fd
[INFO] running `Command { std: "docker" "start" "-a" "12dc4efdd51f58c17ff08755f76f84fecdeb1776d99da46f1835838a46c102fd", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `authenticated`
[INFO] [stderr]  --> src/value_tour.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let authenticated = true;
[INFO] [stderr]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_authenticated`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `total` is assigned to, but never used
[INFO] [stderr]   --> src/value_tour.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let mut total = 0;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_total` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `total` is never read
[INFO] [stderr]   --> src/value_tour.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     total += 1;
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Gender` is never used
[INFO] [stderr]  --> src/types.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum Gender {
[INFO] [stderr]   |      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `ConnectionState` is never used
[INFO] [stderr]  --> src/types.rs:7:6
[INFO] [stderr]   |
[INFO] [stderr] 7 | enum ConnectionState {
[INFO] [stderr]   |      ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `HalfOpen` is never constructed
[INFO] [stderr]   --> src/types.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | struct HalfOpen {}
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `FullSession` is never constructed
[INFO] [stderr]   --> src/types.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | struct FullSession {}
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `User` is never constructed
[INFO] [stderr]   --> src/types.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct User {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-leetcode` (bin "rust-leetcode" test) generated 8 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running unittests src/bin/guess_number.rs (/opt/rustwide/target/debug/deps/guess_number-2f1383faef48c202)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/references_and_borrowing.rs (/opt/rustwide/target/debug/deps/references_and_borrowing-d2386d74d332cdda)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_leetcode-2e663f78ba067ca5)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "12dc4efdd51f58c17ff08755f76f84fecdeb1776d99da46f1835838a46c102fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12dc4efdd51f58c17ff08755f76f84fecdeb1776d99da46f1835838a46c102fd", kill_on_drop: false }`
[INFO] [stdout] 12dc4efdd51f58c17ff08755f76f84fecdeb1776d99da46f1835838a46c102fd