[INFO] cloning repository https://github.com/xinxin001/leetcodes_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xinxin001/leetcodes_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinxin001%2Fleetcodes_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinxin001%2Fleetcodes_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 910a2bfb7894de1e0637401f0de0cceb5c69f035
[INFO] building xinxin001/leetcodes_rust against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinxin001%2Fleetcodes_rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xinxin001/leetcodes_rust on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xinxin001/leetcodes_rust
[INFO] finished tweaking git repo https://github.com/xinxin001/leetcodes_rust
[INFO] tweaked toml for git repo https://github.com/xinxin001/leetcodes_rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/xinxin001/leetcodes_rust 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43affbde85e81a4d46f04a4c1381319cdc3834b1b866735bc54e7beecab9f7d6
[INFO] running `Command { std: "docker" "start" "-a" "43affbde85e81a4d46f04a4c1381319cdc3834b1b866735bc54e7beecab9f7d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43affbde85e81a4d46f04a4c1381319cdc3834b1b866735bc54e7beecab9f7d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43affbde85e81a4d46f04a4c1381319cdc3834b1b866735bc54e7beecab9f7d6", kill_on_drop: false }`
[INFO] [stdout] 43affbde85e81a4d46f04a4c1381319cdc3834b1b866735bc54e7beecab9f7d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95a615b12373cdb2ce1418fc3619a91e44e54a4e19e7baa327a34554e96a2441
[INFO] running `Command { std: "docker" "start" "-a" "95a615b12373cdb2ce1418fc3619a91e44e54a4e19e7baa327a34554e96a2441", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling getrandom v0.2.9
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling leetcodes_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `HitCounter` is never constructed
[INFO] [stdout]  --> src/bin/362design_hit_counter.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct HitCounter {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `hit`, and `get_hits` are never used
[INFO] [stdout]   --> src/bin/362design_hit_counter.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl HitCounter {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 11 |     fn new() -> HitCounter {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn hit(&mut self, timestamp: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn get_hits(&mut self, timestamp: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n_processes`
[INFO] [stdout]   --> src/bin/experiments.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn number_of_ways(n_processes: i32, n_intervals: i32) -> i32 {
[INFO] [stdout]    |                   ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_processes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n_intervals`
[INFO] [stdout]   --> src/bin/experiments.rs:20:37
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn number_of_ways(n_processes: i32, n_intervals: i32) -> i32 {
[INFO] [stdout]    |                                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_intervals`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.58s
[INFO] running `Command { std: "docker" "inspect" "95a615b12373cdb2ce1418fc3619a91e44e54a4e19e7baa327a34554e96a2441", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95a615b12373cdb2ce1418fc3619a91e44e54a4e19e7baa327a34554e96a2441", kill_on_drop: false }`
[INFO] [stdout] 95a615b12373cdb2ce1418fc3619a91e44e54a4e19e7baa327a34554e96a2441
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa79ec0954d6ba40c6ec07c0d72133fdedc83df29c1015ccb188aa5e7241a4fa
[INFO] running `Command { std: "docker" "start" "-a" "fa79ec0954d6ba40c6ec07c0d72133fdedc83df29c1015ccb188aa5e7241a4fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcodes_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `HitCounter` is never constructed
[INFO] [stdout]  --> src/bin/362design_hit_counter.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct HitCounter {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `hit`, and `get_hits` are never used
[INFO] [stdout]   --> src/bin/362design_hit_counter.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl HitCounter {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 11 |     fn new() -> HitCounter {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn hit(&mut self, timestamp: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn get_hits(&mut self, timestamp: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n_processes`
[INFO] [stdout]   --> src/bin/experiments.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn number_of_ways(n_processes: i32, n_intervals: i32) -> i32 {
[INFO] [stdout]    |                   ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_processes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n_intervals`
[INFO] [stdout]   --> src/bin/experiments.rs:20:37
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn number_of_ways(n_processes: i32, n_intervals: i32) -> i32 {
[INFO] [stdout]    |                                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_intervals`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `Command { std: "docker" "inspect" "fa79ec0954d6ba40c6ec07c0d72133fdedc83df29c1015ccb188aa5e7241a4fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa79ec0954d6ba40c6ec07c0d72133fdedc83df29c1015ccb188aa5e7241a4fa", kill_on_drop: false }`
[INFO] [stdout] fa79ec0954d6ba40c6ec07c0d72133fdedc83df29c1015ccb188aa5e7241a4fa