[INFO] fetching crate servant 0.1.0...
[INFO] testing servant-0.1.0 against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] extracting crate servant 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate servant 0.1.0
[INFO] finished tweaking crates.io crate servant 0.1.0
[INFO] tweaked toml for crates.io crate servant 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate servant 0.1.0 on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 129 packages to latest compatible versions
[INFO] [stderr]       Adding bincode v1.3.3 (available: v2.0.1)
[INFO] [stderr]       Adding futures_codec v0.3.4 (available: v0.4.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded servant-macro v0.1.0
[INFO] [stderr]   Downloaded futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]   Downloaded servant-log v0.1.0
[INFO] [stderr]   Downloaded futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]   Downloaded futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]   Downloaded ring-channel v0.7.0
[INFO] [stderr]   Downloaded futures_codec v0.3.4
[INFO] [stderr]   Downloaded futures-preview v0.3.0-alpha.19
[INFO] [stderr]   Downloaded servant-codec v0.1.0
[INFO] [stderr]   Downloaded futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]   Downloaded futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]   Downloaded futures-util-preview v0.3.0-alpha.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9f14ef58fc507a0342ca46aaeaf8cd1544d530edaef8d6d36c85410da7098b1
[INFO] running `Command { std: "docker" "start" "-a" "f9f14ef58fc507a0342ca46aaeaf8cd1544d530edaef8d6d36c85410da7098b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9f14ef58fc507a0342ca46aaeaf8cd1544d530edaef8d6d36c85410da7098b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9f14ef58fc507a0342ca46aaeaf8cd1544d530edaef8d6d36c85410da7098b1", kill_on_drop: false }`
[INFO] [stdout] f9f14ef58fc507a0342ca46aaeaf8cd1544d530edaef8d6d36c85410da7098b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5bf7433d264f83f93f58557d4e75760d7cd2e71950272a7adc83d6e8795a35d6
[INFO] running `Command { std: "docker" "start" "-a" "5bf7433d264f83f93f58557d4e75760d7cd2e71950272a7adc83d6e8795a35d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling futures-lite v2.6.1
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling async-io v2.6.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling value-bag v1.11.1
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling pin-project-internal v0.4.30
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling signal-hook-registry v1.4.6
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling async-channel v2.5.0
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling async-lock v3.4.1
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling blocking v1.6.2
[INFO] [stderr]    Compiling async-executor v1.13.3
[INFO] [stderr]    Compiling async-channel v1.9.0
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling derivative v1.0.4
[INFO] [stderr]    Compiling polling v3.11.0
[INFO] [stderr]    Compiling async-signal v0.2.13
[INFO] [stderr]    Compiling ring-channel v0.7.0
[INFO] [stderr]    Compiling async-process v2.5.0
[INFO] [stderr]    Compiling async-global-executor v2.4.1
[INFO] [stderr]    Compiling servant-log v0.1.0
[INFO] [stderr]    Compiling servant-macro v0.1.0
[INFO] [stderr]    Compiling async-std v1.13.2
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling pin-project v0.4.30
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling futures_codec v0.3.4
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling servant-codec v0.1.0
[INFO] [stderr]    Compiling servant v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/accept.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/adapter.rs:91:10
[INFO] [stdout]    |
[INFO] [stdout] 91 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `record`
[INFO] [stdout]   --> src/accept.rs:38:22
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 Some(record) => unreachable!(),
[INFO] [stdout]    |                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_record`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Node` is never used
[INFO] [stdout]   --> src/list.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub type Node<T> = Rc<RefCell<_Node<T>>>;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]   --> src/list.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct List<T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/list.rs:47:12
[INFO] [stdout]     |
[INFO] [stdout] 46  | impl<T: Clone> List<T> {
[INFO] [stdout]     | ---------------------- associated items in this implementation
[INFO] [stdout] 47  |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54  |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57  |     pub fn top(&mut self, node: Node<T>) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 81  |     pub fn bottom(&mut self, node: Node<T>) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn remove(&mut self, node: Node<T>) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn push_head(&mut self, val: T) -> Node<T> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 134 |     pub fn push_back(&mut self, val: T) -> Node<T> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 150 |     pub fn pop_head(&mut self) -> Option<T> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 165 |     pub fn pop_back(&mut self) -> Option<T> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEFAULT_TIMEOUT_MS` is never used
[INFO] [stdout]   --> src/servant.rs:63:7
[INFO] [stdout]    |
[INFO] [stdout] 63 | const DEFAULT_TIMEOUT_MS: usize = 5000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 20s
[INFO] running `Command { std: "docker" "inspect" "5bf7433d264f83f93f58557d4e75760d7cd2e71950272a7adc83d6e8795a35d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bf7433d264f83f93f58557d4e75760d7cd2e71950272a7adc83d6e8795a35d6", kill_on_drop: false }`
[INFO] [stdout] 5bf7433d264f83f93f58557d4e75760d7cd2e71950272a7adc83d6e8795a35d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d97027723b8384ed969ebaf43065e67fdc6646a6aecad4d18f0dbf355501409c
[INFO] running `Command { std: "docker" "start" "-a" "d97027723b8384ed969ebaf43065e67fdc6646a6aecad4d18f0dbf355501409c", kill_on_drop: false }`
[INFO] [stderr]    Compiling servant v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/accept.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/adapter.rs:91:10
[INFO] [stdout]    |
[INFO] [stdout] 91 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `record`
[INFO] [stdout]   --> src/accept.rs:38:22
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 Some(record) => unreachable!(),
[INFO] [stdout]    |                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_record`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Node` is never used
[INFO] [stdout]   --> src/list.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub type Node<T> = Rc<RefCell<_Node<T>>>;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]   --> src/list.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct List<T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/list.rs:47:12
[INFO] [stdout]     |
[INFO] [stdout] 46  | impl<T: Clone> List<T> {
[INFO] [stdout]     | ---------------------- associated items in this implementation
[INFO] [stdout] 47  |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54  |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57  |     pub fn top(&mut self, node: Node<T>) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 81  |     pub fn bottom(&mut self, node: Node<T>) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn remove(&mut self, node: Node<T>) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn push_head(&mut self, val: T) -> Node<T> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 134 |     pub fn push_back(&mut self, val: T) -> Node<T> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 150 |     pub fn pop_head(&mut self) -> Option<T> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 165 |     pub fn pop_back(&mut self) -> Option<T> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEFAULT_TIMEOUT_MS` is never used
[INFO] [stdout]   --> src/servant.rs:63:7
[INFO] [stdout]    |
[INFO] [stdout] 63 | const DEFAULT_TIMEOUT_MS: usize = 5000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/accept.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/adapter.rs:91:10
[INFO] [stdout]    |
[INFO] [stdout] 91 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `record`
[INFO] [stdout]   --> src/accept.rs:38:22
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 Some(record) => unreachable!(),
[INFO] [stdout]    |                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_record`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `len` is never used
[INFO] [stdout]   --> src/list.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl<T: Clone> List<T> {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEFAULT_TIMEOUT_MS` is never used
[INFO] [stdout]   --> src/servant.rs:63:7
[INFO] [stdout]    |
[INFO] [stdout] 63 | const DEFAULT_TIMEOUT_MS: usize = 5000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.51s
[INFO] running `Command { std: "docker" "inspect" "d97027723b8384ed969ebaf43065e67fdc6646a6aecad4d18f0dbf355501409c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d97027723b8384ed969ebaf43065e67fdc6646a6aecad4d18f0dbf355501409c", kill_on_drop: false }`
[INFO] [stdout] d97027723b8384ed969ebaf43065e67fdc6646a6aecad4d18f0dbf355501409c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 43e7bd435b2b7a2e820d3aa5473ec89ea22e1a83618b4adfb05d0d2962d8eba2
[INFO] running `Command { std: "docker" "start" "-a" "43e7bd435b2b7a2e820d3aa5473ec89ea22e1a83618b4adfb05d0d2962d8eba2", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/accept.rs:22:6
[INFO] [stderr]    |
[INFO] [stderr] 22 |     };
[INFO] [stderr]    |      ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/adapter.rs:91:10
[INFO] [stderr]    |
[INFO] [stderr] 91 |         };
[INFO] [stderr]    |          ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `record`
[INFO] [stderr]   --> src/accept.rs:38:22
[INFO] [stderr]    |
[INFO] [stderr] 38 |                 Some(record) => unreachable!(),
[INFO] [stderr]    |                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_record`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `Node` is never used
[INFO] [stderr]   --> src/list.rs:38:10
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub type Node<T> = Rc<RefCell<_Node<T>>>;
[INFO] [stderr]    |          ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `List` is never constructed
[INFO] [stderr]   --> src/list.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub struct List<T> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: multiple associated items are never used
[INFO] [stderr]    --> src/list.rs:47:12
[INFO] [stderr]     |
[INFO] [stderr] 46  | impl<T: Clone> List<T> {
[INFO] [stderr]     | ---------------------- associated items in this implementation
[INFO] [stderr] 47  |     pub fn new() -> Self {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 54  |     pub fn len(&self) -> usize {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 57  |     pub fn top(&mut self, node: Node<T>) {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 81  |     pub fn bottom(&mut self, node: Node<T>) {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 105 |     pub fn remove(&mut self, node: Node<T>) {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 118 |     pub fn push_head(&mut self, val: T) -> Node<T> {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 134 |     pub fn push_back(&mut self, val: T) -> Node<T> {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 150 |     pub fn pop_head(&mut self) -> Option<T> {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 165 |     pub fn pop_back(&mut self) -> Option<T> {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `DEFAULT_TIMEOUT_MS` is never used
[INFO] [stderr]   --> src/servant.rs:63:7
[INFO] [stderr]    |
[INFO] [stderr] 63 | const DEFAULT_TIMEOUT_MS: usize = 5000;
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `len` is never used
[INFO] [stderr]   --> src/list.rs:54:12
[INFO] [stderr]    |
[INFO] [stderr] 46 | impl<T: Clone> List<T> {
[INFO] [stderr]    | ---------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 54 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `servant` (lib) generated 7 warnings
[INFO] [stderr] warning: `servant` (lib test) generated 5 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/servant-50f8c4eaa3635295)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test drop_guard::tests::deref ... ok
[INFO] [stdout] test drop_guard::tests::drop_change ... ok
[INFO] [stdout] test drop_guard::tests::deref_mut ... ok
[INFO] [stdout] test drop_guard::tests::keep_sync_shared_data ... ok
[INFO] [stdout] test list::test::test2 ... ok
[INFO] [stdout] test list::test::test1 ... ok
[INFO] [stdout] test drop_guard::tests::keep_send_shared_data ... ok
[INFO] [stdout] test drop_guard::tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests servant
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/accept.rs:22:6
[INFO] [stderr]    |
[INFO] [stderr] 22 |     };
[INFO] [stderr]    |      ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/adapter.rs:91:10
[INFO] [stderr]    |
[INFO] [stderr] 91 |         };
[INFO] [stderr]    |          ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/drop_guard.rs - drop_guard::DropGuard<T,F> (line 56) ... FAILED
[INFO] [stdout] test src/drop_guard.rs - drop_guard::DropGuard<T,F> (line 72) ... FAILED
[INFO] [stdout] test src/drop_guard.rs - drop_guard::DropGuard<T,F> (line 90) ... FAILED
[INFO] [stdout] test src/drop_guard.rs - drop_guard::DropGuard<T,F>::new (line 34) ... FAILED
[INFO] [stdout] test src/drop_guard.rs - drop_guard::DropGuard (line 12) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/drop_guard.rs - drop_guard::DropGuard<T,F> (line 56) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `drop_guard`
[INFO] [stdout]  --> src/drop_guard.rs:57:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use drop_guard::DropGuard;
[INFO] [stdout]   |     ^^^^^^^^^^ use of unresolved module or unlinked crate `drop_guard`
[INFO] [stdout]   |
[INFO] [stdout] help: to make use of source file src/drop_guard.rs, use `mod drop_guard` in this file to declare the module
[INFO] [stdout]   |
[INFO] [stdout] 2 + mod drop_guard;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/drop_guard.rs - drop_guard::DropGuard<T,F> (line 72) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `drop_guard`
[INFO] [stdout]  --> src/drop_guard.rs:73:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use drop_guard::DropGuard;
[INFO] [stdout]   |     ^^^^^^^^^^ use of unresolved module or unlinked crate `drop_guard`
[INFO] [stdout]   |
[INFO] [stdout] help: to make use of source file src/drop_guard.rs, use `mod drop_guard` in this file to declare the module
[INFO] [stdout]   |
[INFO] [stdout] 2 + mod drop_guard;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/drop_guard.rs - drop_guard::DropGuard<T,F> (line 90) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `drop_guard`
[INFO] [stdout]  --> src/drop_guard.rs:91:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use drop_guard::DropGuard;
[INFO] [stdout]   |     ^^^^^^^^^^ use of unresolved module or unlinked crate `drop_guard`
[INFO] [stdout]   |
[INFO] [stdout] help: to make use of source file src/drop_guard.rs, use `mod drop_guard` in this file to declare the module
[INFO] [stdout]   |
[INFO] [stdout] 2 + mod drop_guard;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/drop_guard.rs - drop_guard::DropGuard<T,F>::new (line 34) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `drop_guard`
[INFO] [stdout]  --> src/drop_guard.rs:35:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use drop_guard::DropGuard;
[INFO] [stdout]   |     ^^^^^^^^^^ use of unresolved module or unlinked crate `drop_guard`
[INFO] [stdout]   |
[INFO] [stdout] help: to make use of source file src/drop_guard.rs, use `mod drop_guard` in this file to declare the module
[INFO] [stdout]   |
[INFO] [stdout] 2 + mod drop_guard;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/drop_guard.rs - drop_guard::DropGuard (line 12) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `drop_guard`
[INFO] [stdout]  --> src/drop_guard.rs:13:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use drop_guard::DropGuard;
[INFO] [stdout]   |     ^^^^^^^^^^ use of unresolved module or unlinked crate `drop_guard`
[INFO] [stdout]   |
[INFO] [stdout] help: to make use of source file src/drop_guard.rs, use `mod drop_guard` in this file to declare the module
[INFO] [stdout]   |
[INFO] [stdout] 2 + mod drop_guard;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/drop_guard.rs - drop_guard::DropGuard (line 12)
[INFO] [stdout]     src/drop_guard.rs - drop_guard::DropGuard<T,F> (line 56)
[INFO] [stdout]     src/drop_guard.rs - drop_guard::DropGuard<T,F> (line 72)
[INFO] [stdout]     src/drop_guard.rs - drop_guard::DropGuard<T,F> (line 90)
[INFO] [stdout]     src/drop_guard.rs - drop_guard::DropGuard<T,F>::new (line 34)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 5 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.26s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "43e7bd435b2b7a2e820d3aa5473ec89ea22e1a83618b4adfb05d0d2962d8eba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43e7bd435b2b7a2e820d3aa5473ec89ea22e1a83618b4adfb05d0d2962d8eba2", kill_on_drop: false }`
[INFO] [stdout] 43e7bd435b2b7a2e820d3aa5473ec89ea22e1a83618b4adfb05d0d2962d8eba2
