[INFO] cloning repository https://github.com/aunetx/Dust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aunetx/Dust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faunetx%2FDust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faunetx%2FDust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec2a6c4e7c852f294ecb6d8296e6200a7c446624
[INFO] checking aunetx/Dust against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faunetx%2FDust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aunetx/Dust on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aunetx/Dust
[INFO] finished tweaking git repo https://github.com/aunetx/Dust
[INFO] tweaked toml for git repo https://github.com/aunetx/Dust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/aunetx/Dust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 148f4d78c28cdfc8305251c703b1dc1ac3c9a94d40a6ef96f85ddccc92f93abd
[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" "148f4d78c28cdfc8305251c703b1dc1ac3c9a94d40a6ef96f85ddccc92f93abd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "148f4d78c28cdfc8305251c703b1dc1ac3c9a94d40a6ef96f85ddccc92f93abd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "148f4d78c28cdfc8305251c703b1dc1ac3c9a94d40a6ef96f85ddccc92f93abd", kill_on_drop: false }`
[INFO] [stdout] 148f4d78c28cdfc8305251c703b1dc1ac3c9a94d40a6ef96f85ddccc92f93abd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 021f798b9a4308f2d6f64109c16d60c65af4d42acaa9efb6de5c7f74cdb26ddf
[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" "021f798b9a4308f2d6f64109c16d60c65af4d42acaa9efb6de5c7f74cdb26ddf", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking tiny_http v0.6.2
[INFO] [stderr]     Checking simplelog v0.7.2
[INFO] [stderr]     Checking dust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `contains_content`
[INFO] [stdout]    --> src/main.rs:217:9
[INFO] [stdout]     |
[INFO] [stdout] 217 |     let contains_content = !content.is_empty();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contains_content`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contains_content`
[INFO] [stdout]    --> src/main.rs:217:9
[INFO] [stdout]     |
[INFO] [stdout] 217 |     let contains_content = !content.is_empty();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contains_content`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` 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 8.63s
[INFO] running `Command { std: "docker" "inspect" "021f798b9a4308f2d6f64109c16d60c65af4d42acaa9efb6de5c7f74cdb26ddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "021f798b9a4308f2d6f64109c16d60c65af4d42acaa9efb6de5c7f74cdb26ddf", kill_on_drop: false }`
[INFO] [stdout] 021f798b9a4308f2d6f64109c16d60c65af4d42acaa9efb6de5c7f74cdb26ddf