[INFO] fetching crate algorithms-edu 0.2.7...
[INFO] checking algorithms-edu-0.2.7 against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] extracting crate algorithms-edu 0.2.7 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate algorithms-edu 0.2.7 on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate algorithms-edu 0.2.7
[INFO] finished tweaking crates.io crate algorithms-edu 0.2.7
[INFO] tweaked toml for crates.io crate algorithms-edu 0.2.7 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate algorithms-edu 0.2.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded disjoint-sets v0.4.2
[INFO] [stderr]   Downloaded kodama v0.2.3
[INFO] [stderr]   Downloaded priority-queue v1.0.5
[INFO] [stderr]   Downloaded partial-min-max v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 651e9567eaed905c342f275ee231e6e6548697bab7f1683c6884ca6342865769
[INFO] running `Command { std: "docker" "start" "-a" "651e9567eaed905c342f275ee231e6e6548697bab7f1683c6884ca6342865769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "651e9567eaed905c342f275ee231e6e6548697bab7f1683c6884ca6342865769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "651e9567eaed905c342f275ee231e6e6548697bab7f1683c6884ca6342865769", kill_on_drop: false }`
[INFO] [stdout] 651e9567eaed905c342f275ee231e6e6548697bab7f1683c6884ca6342865769
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 38c43297a66218e2a863aeb25fcee0f03c35bcfc509af4af80c361586b83ea73
[INFO] running `Command { std: "docker" "start" "-a" "38c43297a66218e2a863aeb25fcee0f03c35bcfc509af4af80c361586b83ea73", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking partial-min-max v0.4.0
[INFO] [stderr]     Checking disjoint-sets v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling priority-queue v1.0.5
[INFO] [stderr]     Checking ordered-float v2.0.1
[INFO] [stderr]     Checking kodama v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking algorithms-edu v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/algo/graph/eulerian_path.rs:81:10
[INFO] [stdout]    |
[INFO] [stdout] 81 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/algo/graph/eulerian_path.rs:81:10
[INFO] [stdout]    |
[INFO] [stdout] 81 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.67s
[INFO] running `Command { std: "docker" "inspect" "38c43297a66218e2a863aeb25fcee0f03c35bcfc509af4af80c361586b83ea73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38c43297a66218e2a863aeb25fcee0f03c35bcfc509af4af80c361586b83ea73", kill_on_drop: false }`
[INFO] [stdout] 38c43297a66218e2a863aeb25fcee0f03c35bcfc509af4af80c361586b83ea73