[INFO] fetching crate potential 2.2.1...
[INFO] checking potential-2.2.1 against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] extracting crate potential 2.2.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate potential 2.2.1 on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate potential 2.2.1
[INFO] finished tweaking crates.io crate potential 2.2.1
[INFO] tweaked toml for crates.io crate potential 2.2.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "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] f98a6d55807fa19ea18d329d484790d579c2c055566abdb3ecef076e763b881f
[INFO] running `Command { std: "docker" "start" "-a" "f98a6d55807fa19ea18d329d484790d579c2c055566abdb3ecef076e763b881f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f98a6d55807fa19ea18d329d484790d579c2c055566abdb3ecef076e763b881f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f98a6d55807fa19ea18d329d484790d579c2c055566abdb3ecef076e763b881f", kill_on_drop: false }`
[INFO] [stdout] f98a6d55807fa19ea18d329d484790d579c2c055566abdb3ecef076e763b881f
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7faee51e2726260fb37a3de6b0e76ba2b1892c94167ce657f20f197f74816589
[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" "7faee51e2726260fb37a3de6b0e76ba2b1892c94167ce657f20f197f74816589", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]     Checking potential v2.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.49s
[INFO] running `Command { std: "docker" "inspect" "7faee51e2726260fb37a3de6b0e76ba2b1892c94167ce657f20f197f74816589", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7faee51e2726260fb37a3de6b0e76ba2b1892c94167ce657f20f197f74816589", kill_on_drop: false }`
[INFO] [stdout] 7faee51e2726260fb37a3de6b0e76ba2b1892c94167ce657f20f197f74816589