[INFO] fetching crate networking 0.1.8...
[INFO] checking networking-0.1.8 against master#119d2a1a98fe87d4ae6cabf12134a0ef2fb95851 for pr-75180
[INFO] extracting crate networking 0.1.8 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate networking 0.1.8 on toolchain 119d2a1a98fe87d4ae6cabf12134a0ef2fb95851
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate networking 0.1.8
[INFO] finished tweaking crates.io crate networking 0.1.8
[INFO] tweaked toml for crates.io crate networking 0.1.8 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate networking 0.1.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "fetch" "--locked" "--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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dbd081f2fb46c3d1a94b323781364dc37b8a72eda0f2a40bb8aa7c3cf63e4b3b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dbd081f2fb46c3d1a94b323781364dc37b8a72eda0f2a40bb8aa7c3cf63e4b3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbd081f2fb46c3d1a94b323781364dc37b8a72eda0f2a40bb8aa7c3cf63e4b3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbd081f2fb46c3d1a94b323781364dc37b8a72eda0f2a40bb8aa7c3cf63e4b3b", kill_on_drop: false }`
[INFO] [stdout] dbd081f2fb46c3d1a94b323781364dc37b8a72eda0f2a40bb8aa7c3cf63e4b3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6750216df0d76e8c3645feb7e282884c9f9e82085ce329a6fe929f4c18c7bc92
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6750216df0d76e8c3645feb7e282884c9f9e82085ce329a6fe929f4c18c7bc92", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling proc-macro-hack v0.5.16
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]     Checking base64 v0.12.2
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking subtle v2.2.3
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling generic-array v0.14.2
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_json v1.0.56
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-bigint-dig v0.6.0
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking filetime v0.2.11
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking tar v0.4.29
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking block-buffer v0.8.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.0
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking pem v0.8.1
[INFO] [stderr]     Checking simple_asn1 v0.4.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling async-trait v0.1.36
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling num-derive v0.3.1
[INFO] [stderr]    Compiling zeroize_derive v1.0.0
[INFO] [stderr]     Checking zeroize v1.1.0
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking rsa v0.3.0
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking networking v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `time`
[INFO] [stdout]    --> src/asyncronous/encryption.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 169 |     let time = SystemTime::now();
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_time`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]  --> examples/async_listen.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut msg = networking::random_string(43235).into_bytes();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> examples/async_listen.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut msg = networking::random_string(43235).into_bytes();
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]  --> examples/print_peer.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let (peer, config) = test_config();
[INFO] [stdout]   |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> examples/async_client.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     loop {
[INFO] [stdout] 12 | |         println!(
[INFO] [stdout] 13 | |             "got {} bytes from server",
[INFO] [stdout] 14 | |             stream.recv(&mut buffer).await.unwrap()
[INFO] [stdout] 15 | |         );
[INFO] [stdout] 16 | |         buffer.clear();
[INFO] [stdout] 17 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 18 |       let string = String::from_utf8(buffer).unwrap();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 49s
[INFO] running `Command { std: "docker" "inspect" "6750216df0d76e8c3645feb7e282884c9f9e82085ce329a6fe929f4c18c7bc92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6750216df0d76e8c3645feb7e282884c9f9e82085ce329a6fe929f4c18c7bc92", kill_on_drop: false }`
[INFO] [stdout] 6750216df0d76e8c3645feb7e282884c9f9e82085ce329a6fe929f4c18c7bc92