[INFO] cloning repository https://github.com/NorbertBodziony/matching_engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NorbertBodziony/matching_engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNorbertBodziony%2Fmatching_engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNorbertBodziony%2Fmatching_engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8f977a91d8d0bde0ed832f22f0d976696301f063
[INFO] checking NorbertBodziony/matching_engine against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNorbertBodziony%2Fmatching_engine" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NorbertBodziony/matching_engine on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NorbertBodziony/matching_engine
[INFO] finished tweaking git repo https://github.com/NorbertBodziony/matching_engine
[INFO] tweaked toml for git repo https://github.com/NorbertBodziony/matching_engine written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/NorbertBodziony/matching_engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec3794d45230881496e3a9460867f31262e2fc996d517a5cf26c73e8b255db3c
[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" "ec3794d45230881496e3a9460867f31262e2fc996d517a5cf26c73e8b255db3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec3794d45230881496e3a9460867f31262e2fc996d517a5cf26c73e8b255db3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec3794d45230881496e3a9460867f31262e2fc996d517a5cf26c73e8b255db3c", kill_on_drop: false }`
[INFO] [stdout] ec3794d45230881496e3a9460867f31262e2fc996d517a5cf26c73e8b255db3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a3d0a8bcd9a1bacd38d57a5178d6632c8420425f48a7545f4e5501d92b19706
[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" "9a3d0a8bcd9a1bacd38d57a5178d6632c8420425f48a7545f4e5501d92b19706", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling priority-queue v1.0.0
[INFO] [stderr]     Checking engine v0.1.0 (/opt/rustwide/workdir/engine)
[INFO] [stdout] warning: value assigned to `should_pop` is never read
[INFO] [stdout]   --> engine/src/offer.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut should_pop: bool = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `should_pop` is never read
[INFO] [stdout]   --> engine/src/offer.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |             should_pop = false;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `should_pop` is never read
[INFO] [stdout]   --> engine/src/bid.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut should_pop: bool = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `should_pop` is never read
[INFO] [stdout]   --> engine/src/bid.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             should_pop = false;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `should_pop` is never read
[INFO] [stdout]   --> engine/src/offer.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut should_pop: bool = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `should_pop` is never read
[INFO] [stdout]   --> engine/src/offer.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |             should_pop = false;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `should_pop` is never read
[INFO] [stdout]   --> engine/src/bid.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut should_pop: bool = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `should_pop` is never read
[INFO] [stdout]   --> engine/src/bid.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             should_pop = false;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.64s
[INFO] running `Command { std: "docker" "inspect" "9a3d0a8bcd9a1bacd38d57a5178d6632c8420425f48a7545f4e5501d92b19706", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a3d0a8bcd9a1bacd38d57a5178d6632c8420425f48a7545f4e5501d92b19706", kill_on_drop: false }`
[INFO] [stdout] 9a3d0a8bcd9a1bacd38d57a5178d6632c8420425f48a7545f4e5501d92b19706