[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 try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faunetx%2FDust" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aunetx/Dust on toolchain 8b72f65b805cbe4c261de45030d663f524f27376
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "read-manifest" "--manifest-path" "Cargo.toml", 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-1/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded arrayref v0.3.5
[INFO] [stderr]   Downloaded failure_derive v0.1.5
[INFO] [stderr]   Downloaded redox_users v0.3.1
[INFO] [stderr]   Downloaded bitflags v1.1.0
[INFO] [stderr]   Downloaded cfg-if v0.1.9
[INFO] [stderr]   Downloaded cc v1.0.45
[INFO] [stderr]   Downloaded unicode-normalization v0.1.8
[INFO] [stderr]   Downloaded libc v0.2.62
[INFO] [stderr]   Downloaded rust-argon2 v0.5.1
[INFO] [stderr]   Downloaded constant_time_eq v0.1.4
[INFO] [stderr]   Downloaded simplelog v0.7.2
[INFO] [stderr]   Downloaded chrono v0.4.9
[INFO] [stderr]   Downloaded dirs-sys v0.3.4
[INFO] [stderr]   Downloaded ascii v0.8.7
[INFO] [stderr]   Downloaded chunked_transfer v0.3.1
[INFO] [stderr]   Downloaded nodrop v0.1.13
[INFO] [stderr]   Downloaded blake2b_simd v0.5.8
[INFO] [stderr]   Downloaded synstructure v0.10.2
[INFO] [stderr]   Downloaded tiny_http v0.6.2
[INFO] [stderr]   Downloaded failure v0.1.5
[INFO] [stderr]   Downloaded backtrace v0.3.37
[INFO] [stderr]   Downloaded arrayvec v0.4.11
[INFO] [stderr]   Downloaded term v0.6.1
[INFO] [stderr]   Downloaded threadpool v1.7.1
[INFO] [stderr]   Downloaded backtrace-sys v0.1.31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "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] a247249e66caf45dabb7b6eca2141844ce1ec2f69e3eadd529afc197528237ba
[INFO] running `Command { std: "docker" "start" "-a" "a247249e66caf45dabb7b6eca2141844ce1ec2f69e3eadd529afc197528237ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a247249e66caf45dabb7b6eca2141844ce1ec2f69e3eadd529afc197528237ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a247249e66caf45dabb7b6eca2141844ce1ec2f69e3eadd529afc197528237ba", kill_on_drop: false }`
[INFO] [stdout] a247249e66caf45dabb7b6eca2141844ce1ec2f69e3eadd529afc197528237ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "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] d84d6216b72626256c434a89577f1120bd29acb3bd17f5f56912dd34941f207b
[INFO] running `Command { std: "docker" "start" "-a" "d84d6216b72626256c434a89577f1120bd29acb3bd17f5f56912dd34941f207b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking chunked_transfer v0.3.1
[INFO] [stderr]     Checking ascii v0.8.7
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking simplelog v0.7.2
[INFO] [stderr]     Checking tiny_http v0.6.2
[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 11.38s
[INFO] running `Command { std: "docker" "inspect" "d84d6216b72626256c434a89577f1120bd29acb3bd17f5f56912dd34941f207b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d84d6216b72626256c434a89577f1120bd29acb3bd17f5f56912dd34941f207b", kill_on_drop: false }`
[INFO] [stdout] d84d6216b72626256c434a89577f1120bd29acb3bd17f5f56912dd34941f207b