[INFO] cloning repository https://github.com/chuanhao01/Nust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chuanhao01/Nust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchuanhao01%2FNust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchuanhao01%2FNust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 566b41e07d6c0efb4aea1d2a2156979afcdc0a1b
[INFO] checking chuanhao01/Nust against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchuanhao01%2FNust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chuanhao01/Nust
[INFO] finished tweaking git repo https://github.com/chuanhao01/Nust
[INFO] tweaked toml for git repo https://github.com/chuanhao01/Nust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chuanhao01/Nust on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chuanhao01/Nust 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72c76e957879604dde9f45eb98e80b150758068814515deedb65a92e0a8dba3a
[INFO] running `Command { std: "docker" "start" "-a" "72c76e957879604dde9f45eb98e80b150758068814515deedb65a92e0a8dba3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72c76e957879604dde9f45eb98e80b150758068814515deedb65a92e0a8dba3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72c76e957879604dde9f45eb98e80b150758068814515deedb65a92e0a8dba3a", kill_on_drop: false }`
[INFO] [stdout] 72c76e957879604dde9f45eb98e80b150758068814515deedb65a92e0a8dba3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e57c1520280e9246ffde3dc39b1a0829a4abd6f3476e9f6230af1657bc8c4a36
[INFO] running `Command { std: "docker" "start" "-a" "e57c1520280e9246ffde3dc39b1a0829a4abd6f3476e9f6230af1657bc8c4a36", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.170
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking log v0.4.26
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]    Compiling cc v1.2.16
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]    Compiling tun-tap v0.1.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking mio-uds v0.6.8
[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 tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.18
[INFO] [stderr]     Checking nust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `icmp`
[INFO] [stdout]    --> src/protocol/icmp.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let icmp = ICMP::from_byte_buffer(&buf).unwrap();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_icmp`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/protocol.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |             _ => panic!("Not implemented yet"),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/protocol.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Self::ICMP(icmp) => icmp.to_byte_buffer(),
[INFO] [stdout]    |             ---------------- matches some of the same values
[INFO] [stdout] 30 |             Self::TCP(tcp) => tcp.to_byte_buffer(),
[INFO] [stdout]    |             -------------- matches some of the same values
[INFO] [stdout] 31 |             _ => panic!("Not implemented yet"),
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/protocol.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             _ => panic!("Not implemented yet"),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/protocol.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Self::ICMP(icmp) => icmp.len(),
[INFO] [stdout]    |             ---------------- matches some of the same values
[INFO] [stdout] 37 |             Self::TCP(tcp) => tcp.len(),
[INFO] [stdout]    |             -------------- matches some of the same values
[INFO] [stdout] 38 |             _ => panic!("Not implemented yet"),
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `kind` is never read
[INFO] [stdout]   --> src/ip.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct IPPacketError {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 27 |     kind: IPPacketErrorKind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IPPacketError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/protocol.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |             _ => panic!("Not implemented yet"),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/protocol.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Self::ICMP(icmp) => icmp.to_byte_buffer(),
[INFO] [stdout]    |             ---------------- matches some of the same values
[INFO] [stdout] 30 |             Self::TCP(tcp) => tcp.to_byte_buffer(),
[INFO] [stdout]    |             -------------- matches some of the same values
[INFO] [stdout] 31 |             _ => panic!("Not implemented yet"),
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/protocol.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             _ => panic!("Not implemented yet"),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/protocol.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Self::ICMP(icmp) => icmp.len(),
[INFO] [stdout]    |             ---------------- matches some of the same values
[INFO] [stdout] 37 |             Self::TCP(tcp) => tcp.len(),
[INFO] [stdout]    |             -------------- matches some of the same values
[INFO] [stdout] 38 |             _ => panic!("Not implemented yet"),
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `kind` is never read
[INFO] [stdout]   --> src/ip.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct IPPacketError {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 27 |     kind: IPPacketErrorKind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IPPacketError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     _ => {
[INFO] [stdout]    |                     ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/main.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 26 |                     IPBody::ICMP(icmp) => match &icmp.body {
[INFO] [stdout]    |                     ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 51 |                     IPBody::TCP(tcp) => match &tcp.control_bits {
[INFO] [stdout]    |                     ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 98 |                     _ => {
[INFO] [stdout]    |                     ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     _ => {
[INFO] [stdout]    |                     ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/main.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 26 |                     IPBody::ICMP(icmp) => match &icmp.body {
[INFO] [stdout]    |                     ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 51 |                     IPBody::TCP(tcp) => match &tcp.control_bits {
[INFO] [stdout]    |                     ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 98 |                     _ => {
[INFO] [stdout]    |                     ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.83s
[INFO] running `Command { std: "docker" "inspect" "e57c1520280e9246ffde3dc39b1a0829a4abd6f3476e9f6230af1657bc8c4a36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e57c1520280e9246ffde3dc39b1a0829a4abd6f3476e9f6230af1657bc8c4a36", kill_on_drop: false }`
[INFO] [stdout] e57c1520280e9246ffde3dc39b1a0829a4abd6f3476e9f6230af1657bc8c4a36