Nov 27 19:10:28.505 INFO checking takakawa/tcpdump-helper against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 27 19:10:28.507 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-0/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +db42d4dad33013eba11ef37342ad9f614e5652b8-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 27 19:10:29.096 INFO [stdout] f5537da0ef802ee96d259be06dc9b0320e340d7b40e1938d48555b85e45bd421
Nov 27 19:10:29.099 INFO running `"docker" "start" "-a" "f5537da0ef802ee96d259be06dc9b0320e340d7b40e1938d48555b85e45bd421"`
Nov 27 19:10:31.481 INFO [stderr] usermod: no changes
Nov 27 19:10:31.632 INFO [stderr]     Checking tcpdump-helper v0.1.0 (/source)
Nov 27 19:10:32.372 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 19:10:32.372 INFO [stderr]   --> src/main.rs:48:2
Nov 27 19:10:32.372 INFO [stderr]    |
Nov 27 19:10:32.372 INFO [stderr] 48 |     write!(tcpdump_command,"-i {} ",dev);
Nov 27 19:10:32.372 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 19:10:32.372 INFO [stderr]    |
Nov 27 19:10:32.372 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 27 19:10:32.372 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 19:10:32.372 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 27 19:10:32.372 INFO [stderr] 
Nov 27 19:10:32.372 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 19:10:32.372 INFO [stderr]   --> src/main.rs:51:3
Nov 27 19:10:32.372 INFO [stderr]    |
Nov 27 19:10:32.372 INFO [stderr] 51 |         write!(tcpdump_command,"-Ann ");
Nov 27 19:10:32.372 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 19:10:32.372 INFO [stderr]    |
Nov 27 19:10:32.372 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 19:10:32.372 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 27 19:10:32.372 INFO [stderr] 
Nov 27 19:10:32.372 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 19:10:32.372 INFO [stderr]   --> src/main.rs:55:2
Nov 27 19:10:32.372 INFO [stderr]    |
Nov 27 19:10:32.372 INFO [stderr] 55 |     write!(tcpdump_command,"\' port {} and ",port);
Nov 27 19:10:32.372 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 19:10:32.372 INFO [stderr]    |
Nov 27 19:10:32.372 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 19:10:32.372 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 27 19:10:32.372 INFO [stderr] 
Nov 27 19:10:32.372 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 19:10:32.372 INFO [stderr]   --> src/main.rs:76:3
Nov 27 19:10:32.372 INFO [stderr]    |
Nov 27 19:10:32.372 INFO [stderr] 76 |         write!(&mut tcpdump_command, " and tcp[((tcp[12:1] & 0xf0) >> 2)+{}:4]=0x",url_offset);
Nov 27 19:10:32.372 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 19:10:32.372 INFO [stderr]    |
Nov 27 19:10:32.372 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 19:10:32.372 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 27 19:10:32.372 INFO [stderr] 
Nov 27 19:10:32.372 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 19:10:32.372 INFO [stderr]   --> src/main.rs:88:2
Nov 27 19:10:32.372 INFO [stderr]    |
Nov 27 19:10:32.372 INFO [stderr] 88 |     write!(tcpdump_command,"\'");
Nov 27 19:10:32.372 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 19:10:32.372 INFO [stderr]    |
Nov 27 19:10:32.372 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 19:10:32.373 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 27 19:10:32.373 INFO [stderr] 
Nov 27 19:10:32.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 19:10:32.420 INFO [stderr]   --> src/main.rs:48:2
Nov 27 19:10:32.420 INFO [stderr]    |
Nov 27 19:10:32.420 INFO [stderr] 48 |     write!(tcpdump_command,"-i {} ",dev);
Nov 27 19:10:32.420 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 19:10:32.420 INFO [stderr]    |
Nov 27 19:10:32.420 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 27 19:10:32.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 19:10:32.420 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 27 19:10:32.420 INFO [stderr] 
Nov 27 19:10:32.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 19:10:32.420 INFO [stderr]   --> src/main.rs:51:3
Nov 27 19:10:32.420 INFO [stderr]    |
Nov 27 19:10:32.420 INFO [stderr] 51 |         write!(tcpdump_command,"-Ann ");
Nov 27 19:10:32.420 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 19:10:32.420 INFO [stderr]    |
Nov 27 19:10:32.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 19:10:32.420 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 27 19:10:32.420 INFO [stderr] 
Nov 27 19:10:32.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 19:10:32.420 INFO [stderr]   --> src/main.rs:55:2
Nov 27 19:10:32.420 INFO [stderr]    |
Nov 27 19:10:32.420 INFO [stderr] 55 |     write!(tcpdump_command,"\' port {} and ",port);
Nov 27 19:10:32.420 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 19:10:32.420 INFO [stderr]    |
Nov 27 19:10:32.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 19:10:32.420 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 27 19:10:32.420 INFO [stderr] 
Nov 27 19:10:32.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 19:10:32.420 INFO [stderr]   --> src/main.rs:76:3
Nov 27 19:10:32.420 INFO [stderr]    |
Nov 27 19:10:32.420 INFO [stderr] 76 |         write!(&mut tcpdump_command, " and tcp[((tcp[12:1] & 0xf0) >> 2)+{}:4]=0x",url_offset);
Nov 27 19:10:32.420 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 19:10:32.420 INFO [stderr]    |
Nov 27 19:10:32.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 19:10:32.420 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 27 19:10:32.420 INFO [stderr] 
Nov 27 19:10:32.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 19:10:32.420 INFO [stderr]   --> src/main.rs:88:2
Nov 27 19:10:32.421 INFO [stderr]    |
Nov 27 19:10:32.421 INFO [stderr] 88 |     write!(tcpdump_command,"\'");
Nov 27 19:10:32.421 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 19:10:32.421 INFO [stderr]    |
Nov 27 19:10:32.421 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 19:10:32.421 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 27 19:10:32.421 INFO [stderr] 
Nov 27 19:10:32.472 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
Nov 27 19:10:32.480 INFO [stderr] su: No module specific data is present
Nov 27 19:10:33.052 INFO running `"docker" "inspect" "f5537da0ef802ee96d259be06dc9b0320e340d7b40e1938d48555b85e45bd421"`
Nov 27 19:10:33.350 INFO running `"docker" "rm" "-f" "f5537da0ef802ee96d259be06dc9b0320e340d7b40e1938d48555b85e45bd421"`
Nov 27 19:10:33.576 INFO [stdout] f5537da0ef802ee96d259be06dc9b0320e340d7b40e1938d48555b85e45bd421