[INFO] cloning repository https://github.com/hrd2019/matchengine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hrd2019/matchengine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhrd2019%2Fmatchengine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhrd2019%2Fmatchengine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 14bc91d5611626a45161f182384e1c1e95a2dc4f
[INFO] checking hrd2019/matchengine against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhrd2019%2Fmatchengine" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hrd2019/matchengine on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hrd2019/matchengine
[INFO] finished tweaking git repo https://github.com/hrd2019/matchengine
[INFO] tweaked toml for git repo https://github.com/hrd2019/matchengine written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/hrd2019/matchengine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26aac9a72c6a8429625cd86ad48001d80d622ec22d889c30543b99b8cdc26375
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "26aac9a72c6a8429625cd86ad48001d80d622ec22d889c30543b99b8cdc26375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26aac9a72c6a8429625cd86ad48001d80d622ec22d889c30543b99b8cdc26375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26aac9a72c6a8429625cd86ad48001d80d622ec22d889c30543b99b8cdc26375", kill_on_drop: false }`
[INFO] [stdout] 26aac9a72c6a8429625cd86ad48001d80d622ec22d889c30543b99b8cdc26375
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1cb96e2bd6b6ac784ce8734eda04059003d3e446d92b2a3dd0c5ff4d6ebc99e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f1cb96e2bd6b6ac784ce8734eda04059003d3e446d92b2a3dd0c5ff4d6ebc99e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking matchengine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BTreeMap`, `HashMap`
[INFO] [stdout]  --> src/matcher.rs:5:28
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use std::collections::{BTreeMap, HashMap};
[INFO] [stdout]   |                            ^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matcher.rs:107:33
[INFO] [stdout]     |
[INFO] [stdout] 107 | ...                   let mut qty = index.0.entry(vk).or_default();
[INFO] [stdout]     |                           ----^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `curcy_asset`
[INFO] [stdout]   --> src/matcher.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         curcy_asset: Asset,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value_asset`
[INFO] [stdout]   --> src/matcher.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         value_asset: Asset,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/matcher.rs:27:16
[INFO] [stdout]    |
[INFO] [stdout] 27 |         pub fn new(curcy_asset: Asset, value_asset: Asset) -> Matcher {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BTreeMap`, `HashMap`
[INFO] [stdout]  --> src/matcher.rs:5:28
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use std::collections::{BTreeMap, HashMap};
[INFO] [stdout]   |                            ^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matcher.rs:107:33
[INFO] [stdout]     |
[INFO] [stdout] 107 | ...                   let mut qty = index.0.entry(vk).or_default();
[INFO] [stdout]     |                           ----^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `curcy_asset`
[INFO] [stdout]   --> src/matcher.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         curcy_asset: Asset,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value_asset`
[INFO] [stdout]   --> src/matcher.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         value_asset: Asset,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/matcher.rs:27:16
[INFO] [stdout]    |
[INFO] [stdout] 27 |         pub fn new(curcy_asset: Asset, value_asset: Asset) -> Matcher {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "f1cb96e2bd6b6ac784ce8734eda04059003d3e446d92b2a3dd0c5ff4d6ebc99e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1cb96e2bd6b6ac784ce8734eda04059003d3e446d92b2a3dd0c5ff4d6ebc99e", kill_on_drop: false }`
[INFO] [stdout] f1cb96e2bd6b6ac784ce8734eda04059003d3e446d92b2a3dd0c5ff4d6ebc99e