[INFO] fetching crate netstack 0.3.0...
[INFO] testing netstack-0.3.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate netstack 0.3.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate netstack 0.3.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56bb2ab2e604bdc6afa2556301a253858b6792ce381f9a5e5bcdf7952470d859
[INFO] running `Command { std: "docker" "start" "-a" "56bb2ab2e604bdc6afa2556301a253858b6792ce381f9a5e5bcdf7952470d859", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56bb2ab2e604bdc6afa2556301a253858b6792ce381f9a5e5bcdf7952470d859", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56bb2ab2e604bdc6afa2556301a253858b6792ce381f9a5e5bcdf7952470d859", kill_on_drop: false }`
[INFO] [stdout] 56bb2ab2e604bdc6afa2556301a253858b6792ce381f9a5e5bcdf7952470d859
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb5b6ed3f496c145ce704a99619bcb8786f1d668b8de302e9de51b26faa0ef70
[INFO] running `Command { std: "docker" "start" "-a" "bb5b6ed3f496c145ce704a99619bcb8786f1d668b8de302e9de51b26faa0ef70", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[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 v0.3.61
[INFO] [stderr]    Compiling bitvec v0.17.4
[INFO] [stderr]    Compiling object v0.26.0
[INFO] [stderr]    Compiling generic-array v0.12.4
[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 addr2line v0.16.0
[INFO] [stderr]    Compiling synstructure v0.12.5
[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 14.84s
[INFO] running `Command { std: "docker" "inspect" "bb5b6ed3f496c145ce704a99619bcb8786f1d668b8de302e9de51b26faa0ef70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb5b6ed3f496c145ce704a99619bcb8786f1d668b8de302e9de51b26faa0ef70", kill_on_drop: false }`
[INFO] [stdout] bb5b6ed3f496c145ce704a99619bcb8786f1d668b8de302e9de51b26faa0ef70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 176b1a718fe18a06e9c127993f941a13b61e28af0a81450976d1d705318f41a2
[INFO] running `Command { std: "docker" "start" "-a" "176b1a718fe18a06e9c127993f941a13b61e28af0a81450976d1d705318f41a2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [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 3.45s
[INFO] running `Command { std: "docker" "inspect" "176b1a718fe18a06e9c127993f941a13b61e28af0a81450976d1d705318f41a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "176b1a718fe18a06e9c127993f941a13b61e28af0a81450976d1d705318f41a2", kill_on_drop: false }`
[INFO] [stdout] 176b1a718fe18a06e9c127993f941a13b61e28af0a81450976d1d705318f41a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d61ca4481843597e9b91a34ffd8eec2c2a64eeb0929cd365c87429820a398d9c
[INFO] running `Command { std: "docker" "start" "-a" "d61ca4481843597e9b91a34ffd8eec2c2a64eeb0929cd365c87429820a398d9c", kill_on_drop: false }`
[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 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/netstack-b8aa4c5fdd5e706a)
[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 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 packet::tests::sign_packet ... ok
[INFO] [stdout] test security::replay_buffer::tests::test ... ok
[INFO] [stdout] test security::replay_buffer::tests::ack_bits_for_an_empty_buffer_are_empty ... ok
[INFO] [stdout] test security::replay_buffer::tests::test_10 ... ok
[INFO] [stdout] test packets::tests::it_rejects_a_packet_signed_with_a_different_secret ... ok
[INFO] [stdout] test packets::tests::it_rejects_a_tampered_packet ... 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 security::replay_buffer::tests::test_9 ... ok
[INFO] [stdout] test serialization::zig_zag::tests::test_decode ... ok
[INFO] [stdout] test packets::tests::sign_and_verify_packet ... 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 0.01s
[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" "d61ca4481843597e9b91a34ffd8eec2c2a64eeb0929cd365c87429820a398d9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d61ca4481843597e9b91a34ffd8eec2c2a64eeb0929cd365c87429820a398d9c", kill_on_drop: false }`
[INFO] [stdout] d61ca4481843597e9b91a34ffd8eec2c2a64eeb0929cd365c87429820a398d9c
