[INFO] fetching crate in_stream 0.0.52-alpha2...
[INFO] checking in_stream-0.0.52-alpha2 against beta for pr-78714
[INFO] extracting crate in_stream 0.0.52-alpha2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate in_stream 0.0.52-alpha2 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate in_stream 0.0.52-alpha2
[INFO] finished tweaking crates.io crate in_stream 0.0.52-alpha2
[INFO] tweaked toml for crates.io crate in_stream 0.0.52-alpha2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bba8ba7c9cb4b915b416fb41e1e15ad855103a9121cfd6d77c3a1414469d10a
[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" "7bba8ba7c9cb4b915b416fb41e1e15ad855103a9121cfd6d77c3a1414469d10a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bba8ba7c9cb4b915b416fb41e1e15ad855103a9121cfd6d77c3a1414469d10a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bba8ba7c9cb4b915b416fb41e1e15ad855103a9121cfd6d77c3a1414469d10a", kill_on_drop: false }`
[INFO] [stdout] 7bba8ba7c9cb4b915b416fb41e1e15ad855103a9121cfd6d77c3a1414469d10a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9631abe0786af9c3c506c973422972c144d896e7e9120cce02999145a849ff95
[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" "9631abe0786af9c3c506c973422972c144d896e7e9120cce02999145a849ff95", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]     Checking nanoid v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking input_buffer v0.2.0
[INFO] [stderr]     Checking pem v0.7.0
[INFO] [stderr]     Checking url2 v0.0.4
[INFO] [stderr]     Checking native-tls v0.2.6
[INFO] [stderr]     Checking yasna v0.3.2
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking tungstenite v0.9.2
[INFO] [stderr]    Compiling shrinkwraprs v0.2.3
[INFO] [stderr]     Checking rcgen v0.8.0
[INFO] [stderr]     Checking serde_json v1.0.47
[INFO] [stderr]     Checking in_stream v0.0.52-alpha2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/mem.rs:359:9
[INFO] [stdout]     |
[INFO] [stdout] 359 |         { parking_lot::Mutex::new(MemManager::new()) };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/mem.rs:359:9
[INFO] [stdout]     |
[INFO] [stdout] 359 |         { parking_lot::Mutex::new(MemManager::new()) };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` 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 22.06s
[INFO] running `Command { std: "docker" "inspect" "9631abe0786af9c3c506c973422972c144d896e7e9120cce02999145a849ff95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9631abe0786af9c3c506c973422972c144d896e7e9120cce02999145a849ff95", kill_on_drop: false }`
[INFO] [stdout] 9631abe0786af9c3c506c973422972c144d896e7e9120cce02999145a849ff95