[INFO] fetching crate netstack 0.3.0...
[INFO] testing netstack-0.3.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate netstack 0.3.0 into /workspace/builds/worker-24/source
[INFO] validating manifest of crates.io crate netstack 0.3.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate netstack 0.3.0
[INFO] finished tweaking crates.io crate netstack 0.3.0
[INFO] tweaked toml for crates.io crate netstack 0.3.0 written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--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-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c4a28df199b14d0541488b2d46632615a33d919bc81ed1e18fcafd9877feead
[INFO] running `Command { std: "docker" "start" "-a" "4c4a28df199b14d0541488b2d46632615a33d919bc81ed1e18fcafd9877feead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c4a28df199b14d0541488b2d46632615a33d919bc81ed1e18fcafd9877feead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c4a28df199b14d0541488b2d46632615a33d919bc81ed1e18fcafd9877feead", kill_on_drop: false }`
[INFO] [stdout] 4c4a28df199b14d0541488b2d46632615a33d919bc81ed1e18fcafd9877feead
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a996a8bf8cb3d79451bc28c4630596e74fbb634aaf9d0b4b4f32270990522eab
[INFO] running `Command { std: "docker" "start" "-a" "a996a8bf8cb3d79451bc28c4630596e74fbb634aaf9d0b4b4f32270990522eab", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling subtle v1.0.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling radium v0.3.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]    Compiling bitvec v0.17.4
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling hmac v0.7.1
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling object v0.27.1
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling netstack v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `SerializationError`
[INFO] [stdout]  --> src/serialization/writer.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::{Serializer, SerializationError};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:18:36
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn serialize_string(&mut self, value: &str) { unimplemented!() }
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:19:32
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn serialize_u8(&mut self, value: &u8) { unimplemented!() }
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:20:32
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn serialize_i8(&mut self, value: &i8) { unimplemented!() }
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn serialize_u16(&mut self, value: &u16) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:22:33
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn serialize_i16(&mut self, value: &i16) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:23:33
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn serialize_u32(&mut self, value: &u32) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn serialize_i32(&mut self, value: &i32) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn serialize_u64(&mut self, value: &u64) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:26:33
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn serialize_i64(&mut self, value: &i64) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:27:33
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn serialize_f32(&mut self, value: &f32) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn serialize_f64(&mut self, value: &f64) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_var_int`
[INFO] [stdout]   --> src/serialization/reader.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn read_var_int(&mut self) -> Result<i64, SerializationError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer`
[INFO] [stdout]  --> src/serialization/writer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     buffer: &'a mut [u8],
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `position`
[INFO] [stdout]  --> src/serialization/writer.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     position: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `encode`
[INFO] [stdout]  --> src/serialization/zig_zag.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn encode(value: i64) -> u64 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decode`
[INFO] [stdout]  --> src/serialization/zig_zag.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn decode(value: u64) -> i64 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.95s
[INFO] running `Command { std: "docker" "inspect" "a996a8bf8cb3d79451bc28c4630596e74fbb634aaf9d0b4b4f32270990522eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a996a8bf8cb3d79451bc28c4630596e74fbb634aaf9d0b4b4f32270990522eab", kill_on_drop: false }`
[INFO] [stdout] a996a8bf8cb3d79451bc28c4630596e74fbb634aaf9d0b4b4f32270990522eab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f815180bacb894cfe1ce5a14346771a0d8695440be037a6050ece61a86a696e5
[INFO] running `Command { std: "docker" "start" "-a" "f815180bacb894cfe1ce5a14346771a0d8695440be037a6050ece61a86a696e5", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `SerializationError`
[INFO] [stdout]  --> src/serialization/writer.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::{Serializer, SerializationError};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:18:36
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn serialize_string(&mut self, value: &str) { unimplemented!() }
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:19:32
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn serialize_u8(&mut self, value: &u8) { unimplemented!() }
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:20:32
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn serialize_i8(&mut self, value: &i8) { unimplemented!() }
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn serialize_u16(&mut self, value: &u16) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:22:33
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn serialize_i16(&mut self, value: &i16) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:23:33
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn serialize_u32(&mut self, value: &u32) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling netstack v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn serialize_i32(&mut self, value: &i32) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn serialize_u64(&mut self, value: &u64) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:26:33
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn serialize_i64(&mut self, value: &i64) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:27:33
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn serialize_f32(&mut self, value: &f32) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn serialize_f64(&mut self, value: &f64) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_var_int`
[INFO] [stdout]   --> src/serialization/reader.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn read_var_int(&mut self) -> Result<i64, SerializationError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer`
[INFO] [stdout]  --> src/serialization/writer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     buffer: &'a mut [u8],
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `position`
[INFO] [stdout]  --> src/serialization/writer.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     position: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `encode`
[INFO] [stdout]  --> src/serialization/zig_zag.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn encode(value: i64) -> u64 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decode`
[INFO] [stdout]  --> src/serialization/zig_zag.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn decode(value: u64) -> i64 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SerializationError`
[INFO] [stdout]  --> src/serialization/writer.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::{Serializer, SerializationError};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:18:36
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn serialize_string(&mut self, value: &str) { unimplemented!() }
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:19:32
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn serialize_u8(&mut self, value: &u8) { unimplemented!() }
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:20:32
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn serialize_i8(&mut self, value: &i8) { unimplemented!() }
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn serialize_u16(&mut self, value: &u16) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:22:33
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn serialize_i16(&mut self, value: &i16) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:23:33
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn serialize_u32(&mut self, value: &u32) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn serialize_i32(&mut self, value: &i32) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn serialize_u64(&mut self, value: &u64) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:26:33
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn serialize_i64(&mut self, value: &i64) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:27:33
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn serialize_f32(&mut self, value: &f32) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/serialization/writer.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn serialize_f64(&mut self, value: &f64) { unimplemented!() }
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_var_int`
[INFO] [stdout]   --> src/serialization/reader.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn read_var_int(&mut self) -> Result<i64, SerializationError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer`
[INFO] [stdout]  --> src/serialization/writer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     buffer: &'a mut [u8],
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `position`
[INFO] [stdout]  --> src/serialization/writer.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     position: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "f815180bacb894cfe1ce5a14346771a0d8695440be037a6050ece61a86a696e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f815180bacb894cfe1ce5a14346771a0d8695440be037a6050ece61a86a696e5", kill_on_drop: false }`
[INFO] [stdout] f815180bacb894cfe1ce5a14346771a0d8695440be037a6050ece61a86a696e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4196fb230de050ebca0fdf72c12a8958d14acfe2297441e83e3259fc2313e835
[INFO] running `Command { std: "docker" "start" "-a" "4196fb230de050ebca0fdf72c12a8958d14acfe2297441e83e3259fc2313e835", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `SerializationError`
[INFO] [stderr]  --> src/serialization/writer.rs:1:25
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::{Serializer, SerializationError};
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/serialization/writer.rs:18:36
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn serialize_string(&mut self, value: &str) { unimplemented!() }
[INFO] [stderr]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/serialization/writer.rs:19:32
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn serialize_u8(&mut self, value: &u8) { unimplemented!() }
[INFO] [stderr]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/serialization/writer.rs:20:32
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn serialize_i8(&mut self, value: &i8) { unimplemented!() }
[INFO] [stderr]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/serialization/writer.rs:21:33
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn serialize_u16(&mut self, value: &u16) { unimplemented!() }
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/serialization/writer.rs:22:33
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn serialize_i16(&mut self, value: &i16) { unimplemented!() }
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/serialization/writer.rs:23:33
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn serialize_u32(&mut self, value: &u32) { unimplemented!() }
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/serialization/writer.rs:24:33
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn serialize_i32(&mut self, value: &i32) { unimplemented!() }
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/serialization/writer.rs:25:33
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn serialize_u64(&mut self, value: &u64) { unimplemented!() }
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/serialization/writer.rs:26:33
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn serialize_i64(&mut self, value: &i64) { unimplemented!() }
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/serialization/writer.rs:27:33
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn serialize_f32(&mut self, value: &f32) { unimplemented!() }
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/serialization/writer.rs:28:33
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn serialize_f64(&mut self, value: &f64) { unimplemented!() }
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read_var_int`
[INFO] [stderr]   --> src/serialization/reader.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn read_var_int(&mut self) -> Result<i64, SerializationError> {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `buffer`
[INFO] [stderr]  --> src/serialization/writer.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     buffer: &'a mut [u8],
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `position`
[INFO] [stderr]  --> src/serialization/writer.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     position: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `encode`
[INFO] [stderr]  --> src/serialization/zig_zag.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn encode(value: i64) -> u64 {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `decode`
[INFO] [stderr]  --> src/serialization/zig_zag.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn decode(value: u64) -> i64 {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `netstack` (lib) generated 17 warnings
[INFO] [stderr] warning: `netstack` (lib test) generated 15 warnings (15 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/netstack-09a5f57ade0865da)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test packet::tests::assert_header_size_matches_constants ... ok
[INFO] [stdout] test packet::tests::test_set_data_in_header ... ok
[INFO] [stdout] test packet::tests::sign_packet ... ok
[INFO] [stdout] test security::replay_buffer::tests::ack_bits_for_an_empty_buffer_are_empty ... ok
[INFO] [stdout] test packets::tests::it_rejects_a_tampered_packet ... ok
[INFO] [stdout] test packets::tests::it_rejects_a_packet_signed_with_a_different_secret ... ok
[INFO] [stdout] test security::replay_buffer::tests::it_acknowledges_a_sequence_number_only_once ... ok
[INFO] [stdout] test security::replay_buffer::tests::it_forgets_things_outside_the_buffer ... ok
[INFO] [stdout] test packets::tests::sign_and_verify_packet ... ok
[INFO] [stdout] test security::replay_buffer::tests::test ... ok
[INFO] [stdout] test security::replay_buffer::tests::test_10 ... ok
[INFO] [stdout] test security::replay_buffer::tests::test_2 ... ok
[INFO] [stdout] test security::replay_buffer::tests::test_7 ... ok
[INFO] [stdout] test security::replay_buffer::tests::test_8 ... ok
[INFO] [stdout] test serialization::zig_zag::tests::test_decode ... ok
[INFO] [stdout] test security::replay_buffer::tests::test_9 ... ok
[INFO] [stdout] test serialization::zig_zag::tests::test_encode ... ok
[INFO] [stdout] test serialization::zig_zag::tests::test_encode_decode ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests netstack
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4196fb230de050ebca0fdf72c12a8958d14acfe2297441e83e3259fc2313e835", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4196fb230de050ebca0fdf72c12a8958d14acfe2297441e83e3259fc2313e835", kill_on_drop: false }`
[INFO] [stdout] 4196fb230de050ebca0fdf72c12a8958d14acfe2297441e83e3259fc2313e835