[INFO] fetching crate fastforward 0.5.1...
[INFO] checking fastforward-0.5.1 against master#3e826bb11228508fbe749e594038d6727208aa94 for pr-82322
[INFO] extracting crate fastforward 0.5.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate fastforward 0.5.1 on toolchain 3e826bb11228508fbe749e594038d6727208aa94
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fastforward 0.5.1
[INFO] finished tweaking crates.io crate fastforward 0.5.1
[INFO] tweaked toml for crates.io crate fastforward 0.5.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flask v2.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+3e826bb11228508fbe749e594038d6727208aa94" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31f918d2f41159d181f62d5e87bd2092cf82a7916283d9e7045146dce74d0b4a
[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" "31f918d2f41159d181f62d5e87bd2092cf82a7916283d9e7045146dce74d0b4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31f918d2f41159d181f62d5e87bd2092cf82a7916283d9e7045146dce74d0b4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31f918d2f41159d181f62d5e87bd2092cf82a7916283d9e7045146dce74d0b4a", kill_on_drop: false }`
[INFO] [stdout] 31f918d2f41159d181f62d5e87bd2092cf82a7916283d9e7045146dce74d0b4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+3e826bb11228508fbe749e594038d6727208aa94" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ed0184f7e88dff66658af85658750842b7e01421a5093ada1a6e42ced971fd6
[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" "3ed0184f7e88dff66658af85658750842b7e01421a5093ada1a6e42ced971fd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking lexical-core v0.7.5
[INFO] [stderr]     Checking http v0.2.3
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking flask v2.0.3
[INFO] [stderr]     Checking fastforward v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Response`
[INFO] [stdout]   --> src/proxy/filters.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         Response
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.64s
[INFO] running `Command { std: "docker" "inspect" "3ed0184f7e88dff66658af85658750842b7e01421a5093ada1a6e42ced971fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ed0184f7e88dff66658af85658750842b7e01421a5093ada1a6e42ced971fd6", kill_on_drop: false }`
[INFO] [stdout] 3ed0184f7e88dff66658af85658750842b7e01421a5093ada1a6e42ced971fd6