[INFO] fetching crate tun-tap 0.1.2...
[INFO] checking tun-tap-0.1.2 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate tun-tap 0.1.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate tun-tap 0.1.2 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tun-tap 0.1.2
[INFO] finished tweaking crates.io crate tun-tap 0.1.2
[INFO] tweaked toml for crates.io crate tun-tap 0.1.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ab52b336eeb1574d10df6eeb051d51ca81747abd84a948cd9738c9fe5b33b9d
[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" "9ab52b336eeb1574d10df6eeb051d51ca81747abd84a948cd9738c9fe5b33b9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ab52b336eeb1574d10df6eeb051d51ca81747abd84a948cd9738c9fe5b33b9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ab52b336eeb1574d10df6eeb051d51ca81747abd84a948cd9738c9fe5b33b9d", kill_on_drop: false }`
[INFO] [stdout] 9ab52b336eeb1574d10df6eeb051d51ca81747abd84a948cd9738c9fe5b33b9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 618856f93a9e36ae1c065ecddabeef5df2fbb332dedfd3e6dd13dd075bcfa1cb
[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" "618856f93a9e36ae1c065ecddabeef5df2fbb332dedfd3e6dd13dd075bcfa1cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking tinyvec v0.3.4
[INFO] [stderr]     Checking unicode-xid v0.0.4
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]    Compiling tun-tap v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking pulldown-cmark v0.1.2
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking synom v0.11.3
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking syn v0.11.11
[INFO] [stderr]     Checking unicode-normalization v0.1.13
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking version-sync v0.5.0
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stdout] warning: unnecessary braces around function argument
[INFO] [stdout]    --> src/lib.rs:143:85
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let result = unsafe { tuntap_setup(fd.as_raw_fd(), name_ptr, mode as c_int, { if packet_info { 1 } else { 0 } }) };
[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 function argument
[INFO] [stdout]    --> src/lib.rs:143:85
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let result = unsafe { tuntap_setup(fd.as_raw_fd(), name_ptr, mode as c_int, { if packet_info { 1 } else { 0 } }) };
[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] [stdout] warning: unused `futures::stream::Map` in tuple element 0 that must be used
[INFO] [stdout]   --> examples/tokio.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     core.run(reader.join(writer)).unwrap();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: streams do nothing unless polled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.13s
[INFO] running `Command { std: "docker" "inspect" "618856f93a9e36ae1c065ecddabeef5df2fbb332dedfd3e6dd13dd075bcfa1cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "618856f93a9e36ae1c065ecddabeef5df2fbb332dedfd3e6dd13dd075bcfa1cb", kill_on_drop: false }`
[INFO] [stdout] 618856f93a9e36ae1c065ecddabeef5df2fbb332dedfd3e6dd13dd075bcfa1cb