[INFO] cloning repository https://github.com/vjancik/tun_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vjancik/tun_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvjancik%2Ftun_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvjancik%2Ftun_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66a544ebbd291e6719c6f9520f8e6a96bc42b454
[INFO] testing vjancik/tun_playground against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvjancik%2Ftun_playground" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/vjancik/tun_playground
[INFO] finished tweaking git repo https://github.com/vjancik/tun_playground
[INFO] tweaked toml for git repo https://github.com/vjancik/tun_playground written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/vjancik/tun_playground on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/vjancik/tun_playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6720c568367407e3960de66d039a762fa5c81210fc61a7e023d22b8502137a48
[INFO] running `Command { std: "docker" "start" "-a" "6720c568367407e3960de66d039a762fa5c81210fc61a7e023d22b8502137a48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6720c568367407e3960de66d039a762fa5c81210fc61a7e023d22b8502137a48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6720c568367407e3960de66d039a762fa5c81210fc61a7e023d22b8502137a48", kill_on_drop: false }`
[INFO] [stdout] 6720c568367407e3960de66d039a762fa5c81210fc61a7e023d22b8502137a48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e46319b7e79798e65a7834897e9b320619b2b179365fc4f6dcdbc6c2775e1c7
[INFO] running `Command { std: "docker" "start" "-a" "7e46319b7e79798e65a7834897e9b320619b2b179365fc4f6dcdbc6c2775e1c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling smallvec v1.6.0
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling anyhow v1.0.37
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling pin-project-lite v0.2.1
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling sharded-slab v0.1.1
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling bytes v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling tracing-log v0.1.1
[INFO] [stderr]    Compiling signal-hook v0.3.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling parking_lot_core v0.8.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.7
[INFO] [stderr]    Compiling nix v0.19.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling tracing v0.1.22
[INFO] [stderr]    Compiling tracing-subscriber v0.2.15
[INFO] [stderr]    Compiling tun_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/main.rs:225:43
[INFO] [stdout]     |
[INFO] [stdout] 225 |                     let signal = unsafe { mem::transmute::<u8, i8>(chan_buf[0])};
[INFO] [stdout]     |                                           ------------------------^^^^^^^^^^^^^
[INFO] [stdout]     |                                           |
[INFO] [stdout]     |                                           help: replace this with: `u8::cast_signed`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/main.rs:341:36
[INFO] [stdout]     |
[INFO] [stdout] 341 |             chan_buf[0] = unsafe { mem::transmute::<i8, u8>(-1) };
[INFO] [stdout]     |                                    ------------------------^^^^
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    help: replace this with: `i8::cast_unsigned`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.37s
[INFO] running `Command { std: "docker" "inspect" "7e46319b7e79798e65a7834897e9b320619b2b179365fc4f6dcdbc6c2775e1c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e46319b7e79798e65a7834897e9b320619b2b179365fc4f6dcdbc6c2775e1c7", kill_on_drop: false }`
[INFO] [stdout] 7e46319b7e79798e65a7834897e9b320619b2b179365fc4f6dcdbc6c2775e1c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78a3ed3e267b6883002764d0a0f2e09f42724f100edf32eb1af7eba6189998b3
[INFO] running `Command { std: "docker" "start" "-a" "78a3ed3e267b6883002764d0a0f2e09f42724f100edf32eb1af7eba6189998b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling tun_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/main.rs:225:43
[INFO] [stdout]     |
[INFO] [stdout] 225 |                     let signal = unsafe { mem::transmute::<u8, i8>(chan_buf[0])};
[INFO] [stdout]     |                                           ------------------------^^^^^^^^^^^^^
[INFO] [stdout]     |                                           |
[INFO] [stdout]     |                                           help: replace this with: `u8::cast_signed`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/main.rs:341:36
[INFO] [stdout]     |
[INFO] [stdout] 341 |             chan_buf[0] = unsafe { mem::transmute::<i8, u8>(-1) };
[INFO] [stdout]     |                                    ------------------------^^^^
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    help: replace this with: `i8::cast_unsigned`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "78a3ed3e267b6883002764d0a0f2e09f42724f100edf32eb1af7eba6189998b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78a3ed3e267b6883002764d0a0f2e09f42724f100edf32eb1af7eba6189998b3", kill_on_drop: false }`
[INFO] [stdout] 78a3ed3e267b6883002764d0a0f2e09f42724f100edf32eb1af7eba6189998b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 79f04cd28d70adb42ec7fe118f8ab2e8ba845101ae69eda06a0d149498b02a78
[INFO] running `Command { std: "docker" "start" "-a" "79f04cd28d70adb42ec7fe118f8ab2e8ba845101ae69eda06a0d149498b02a78", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary transmute
[INFO] [stderr]    --> src/main.rs:225:43
[INFO] [stderr]     |
[INFO] [stderr] 225 |                     let signal = unsafe { mem::transmute::<u8, i8>(chan_buf[0])};
[INFO] [stderr]     |                                           ------------------------^^^^^^^^^^^^^
[INFO] [stderr]     |                                           |
[INFO] [stderr]     |                                           help: replace this with: `u8::cast_signed`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary transmute
[INFO] [stderr]    --> src/main.rs:341:36
[INFO] [stderr]     |
[INFO] [stderr] 341 |             chan_buf[0] = unsafe { mem::transmute::<i8, u8>(-1) };
[INFO] [stderr]     |                                    ------------------------^^^^
[INFO] [stderr]     |                                    |
[INFO] [stderr]     |                                    help: replace this with: `i8::cast_unsigned`
[INFO] [stderr] 
[INFO] [stderr] warning: `tun_playground` (bin "tun_playground" test) generated 2 warnings (run `cargo fix --bin "tun_playground" -p tun_playground --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/tun_playground-46a602e04e78bb98)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tun::tests::test_mtu ... FAILED
[INFO] [stdout] test tun::tests::test_multi_queue ... FAILED
[INFO] [stdout] test tun::tests::test_tunsetiff_ioctl_code ... ok
[INFO] [stdout] test tun::tests::test_non_blocking ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tun::tests::test_mtu stdout ----
[INFO] [stdout] Error: ENOENT: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] ---- tun::tests::test_multi_queue stdout ----
[INFO] [stdout] Error: ENOENT: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] ---- tun::tests::test_non_blocking stdout ----
[INFO] [stdout] Error: ENOENT: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tun::tests::test_mtu
[INFO] [stdout]     tun::tests::test_multi_queue
[INFO] [stdout]     tun::tests::test_non_blocking
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin tun_playground`
[INFO] running `Command { std: "docker" "inspect" "79f04cd28d70adb42ec7fe118f8ab2e8ba845101ae69eda06a0d149498b02a78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79f04cd28d70adb42ec7fe118f8ab2e8ba845101ae69eda06a0d149498b02a78", kill_on_drop: false }`
[INFO] [stdout] 79f04cd28d70adb42ec7fe118f8ab2e8ba845101ae69eda06a0d149498b02a78
