[INFO] fetching crate pcapng-writer 0.1.0...
[INFO] checking pcapng-writer-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate pcapng-writer 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate pcapng-writer 0.1.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pcapng-writer 0.1.0
[INFO] finished tweaking crates.io crate pcapng-writer 0.1.0
[INFO] tweaked toml for crates.io crate pcapng-writer 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages
[INFO] [stderr]       Adding nom v2.2.1 (latest: v7.1.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pcapng v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae7c69f6d73e3fe0ebbecf99ad618f583f604854e6ff41b30532565aaf751a6e
[INFO] running `Command { std: "docker" "start" "-a" "ae7c69f6d73e3fe0ebbecf99ad618f583f604854e6ff41b30532565aaf751a6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae7c69f6d73e3fe0ebbecf99ad618f583f604854e6ff41b30532565aaf751a6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae7c69f6d73e3fe0ebbecf99ad618f583f604854e6ff41b30532565aaf751a6e", kill_on_drop: false }`
[INFO] [stdout] ae7c69f6d73e3fe0ebbecf99ad618f583f604854e6ff41b30532565aaf751a6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1896d704145b13d58a9d5b6b8fd33549ca935a460b5e31454c742c6fd6dc66dd
[INFO] running `Command { std: "docker" "start" "-a" "1896d704145b13d58a9d5b6b8fd33549ca935a460b5e31454c742c6fd6dc66dd", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking nom v2.2.1
[INFO] [stderr]     Checking pcapng-writer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `padding` is never used
[INFO] [stdout]   --> src/blocks/mod.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | trait Block {
[INFO] [stdout]    |       ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn padding(&self) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking pcapng v1.0.0
[INFO] [stdout] warning: the item `pcapng` is imported redundantly
[INFO] [stdout]    --> src/blocks/epb.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |     use pcapng;
[INFO] [stdout]     |         ^^^^^^ the item `pcapng` is already defined by prelude
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pcapng` is imported redundantly
[INFO] [stdout]   --> src/blocks/idb.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     use pcapng;
[INFO] [stdout]    |         ^^^^^^ the item `pcapng` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pcapng` is imported redundantly
[INFO] [stdout]   --> src/blocks/isb.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     use pcapng;
[INFO] [stdout]    |         ^^^^^^ the item `pcapng` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pcapng` is imported redundantly
[INFO] [stdout]    --> src/blocks/shb.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |     use pcapng;
[INFO] [stdout]     |         ^^^^^^ the item `pcapng` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pcapng` is imported redundantly
[INFO] [stdout]   --> src/blocks/spb.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     use pcapng;
[INFO] [stdout]    |         ^^^^^^ the item `pcapng` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EnhancedPacketBlock` is imported redundantly
[INFO] [stdout]   --> src/blocks/mod.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     use super::*;
[INFO] [stdout]    |         -------- the item `EnhancedPacketBlock` is already imported here
[INFO] [stdout] 92 |     use crate::blocks::options::*;
[INFO] [stdout] 93 |     use crate::blocks::EnhancedPacketBlock;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PcapNgWriter` is imported redundantly
[INFO] [stdout]   --> src/writer.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     use super::*;
[INFO] [stdout]    |         -------- the item `PcapNgWriter` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 70 |     use crate::writer::PcapNgWriter;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pcapng` is imported redundantly
[INFO] [stdout]   --> src/writer.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     use pcapng;
[INFO] [stdout]    |         ^^^^^^ the item `pcapng` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `padding` is never used
[INFO] [stdout]   --> src/blocks/mod.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | trait Block {
[INFO] [stdout]    |       ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn padding(&self) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v2.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "1896d704145b13d58a9d5b6b8fd33549ca935a460b5e31454c742c6fd6dc66dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1896d704145b13d58a9d5b6b8fd33549ca935a460b5e31454c742c6fd6dc66dd", kill_on_drop: false }`
[INFO] [stdout] 1896d704145b13d58a9d5b6b8fd33549ca935a460b5e31454c742c6fd6dc66dd
[INFO] checking pcapng-writer-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate pcapng-writer 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate pcapng-writer 0.1.0 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pcapng-writer 0.1.0
[INFO] finished tweaking crates.io crate pcapng-writer 0.1.0
[INFO] tweaked toml for crates.io crate pcapng-writer 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 915700256cb2c9f9181654a5935bcdaefe3b73e6e198c6062db7b94c67d50b40
[INFO] running `Command { std: "docker" "start" "-a" "915700256cb2c9f9181654a5935bcdaefe3b73e6e198c6062db7b94c67d50b40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "915700256cb2c9f9181654a5935bcdaefe3b73e6e198c6062db7b94c67d50b40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "915700256cb2c9f9181654a5935bcdaefe3b73e6e198c6062db7b94c67d50b40", kill_on_drop: false }`
[INFO] [stdout] 915700256cb2c9f9181654a5935bcdaefe3b73e6e198c6062db7b94c67d50b40
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9dc18b39726a1b36fe7481153a752780edba60bb8b6b78c69bad5227721d06b2
[INFO] running `Command { std: "docker" "start" "-a" "9dc18b39726a1b36fe7481153a752780edba60bb8b6b78c69bad5227721d06b2", kill_on_drop: false }`
[INFO] [stderr]     Checking nom v2.2.1
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking pcapng-writer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `padding` is never used
[INFO] [stdout]   --> src/blocks/mod.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | trait Block {
[INFO] [stdout]    |       ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn padding(&self) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking pcapng v1.0.0
[INFO] [stdout] warning: the item `pcapng` is imported redundantly
[INFO] [stdout]    --> src/blocks/epb.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |     use pcapng;
[INFO] [stdout]     |         ^^^^^^ the item `pcapng` is already defined by prelude
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pcapng` is imported redundantly
[INFO] [stdout]   --> src/blocks/idb.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     use pcapng;
[INFO] [stdout]    |         ^^^^^^ the item `pcapng` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pcapng` is imported redundantly
[INFO] [stdout]   --> src/blocks/isb.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     use pcapng;
[INFO] [stdout]    |         ^^^^^^ the item `pcapng` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pcapng` is imported redundantly
[INFO] [stdout]    --> src/blocks/shb.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |     use pcapng;
[INFO] [stdout]     |         ^^^^^^ the item `pcapng` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pcapng` is imported redundantly
[INFO] [stdout]   --> src/blocks/spb.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     use pcapng;
[INFO] [stdout]    |         ^^^^^^ the item `pcapng` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EnhancedPacketBlock` is imported redundantly
[INFO] [stdout]   --> src/blocks/mod.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     use super::*;
[INFO] [stdout]    |         -------- the item `EnhancedPacketBlock` is already imported here
[INFO] [stdout] 92 |     use crate::blocks::options::*;
[INFO] [stdout] 93 |     use crate::blocks::EnhancedPacketBlock;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PcapNgWriter` is imported redundantly
[INFO] [stdout]   --> src/writer.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     use super::*;
[INFO] [stdout]    |         -------- the item `PcapNgWriter` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 70 |     use crate::writer::PcapNgWriter;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pcapng` is imported redundantly
[INFO] [stdout]   --> src/writer.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     use pcapng;
[INFO] [stdout]    |         ^^^^^^ the item `pcapng` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/blocks/epb.rs:190:21
[INFO] [stdout]     |
[INFO] [stdout] 190 |                     panic!();
[INFO] [stdout]     |                     ^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pcapng-writer` (lib test) due to 2 previous errors; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9dc18b39726a1b36fe7481153a752780edba60bb8b6b78c69bad5227721d06b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dc18b39726a1b36fe7481153a752780edba60bb8b6b78c69bad5227721d06b2", kill_on_drop: false }`
[INFO] [stdout] 9dc18b39726a1b36fe7481153a752780edba60bb8b6b78c69bad5227721d06b2