[INFO] fetching crate candid_server 0.3.0... [INFO] testing candid_server-0.3.0 against beta-2022-04-10 for beta-1.61-1 [INFO] extracting crate candid_server 0.3.0 into /workspace/builds/worker-9/source [INFO] validating manifest of crates.io crate candid_server 0.3.0 on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate candid_server 0.3.0 [INFO] finished tweaking crates.io crate candid_server 0.3.0 [INFO] tweaked toml for crates.io crate candid_server 0.3.0 written to /workspace/builds/worker-9/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1dbf7189c5f25a231bf8ec2e8e5c693582a04fab749cdc522c6927a3d2fb4a82 [INFO] running `Command { std: "docker" "start" "-a" "1dbf7189c5f25a231bf8ec2e8e5c693582a04fab749cdc522c6927a3d2fb4a82", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1dbf7189c5f25a231bf8ec2e8e5c693582a04fab749cdc522c6927a3d2fb4a82", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1dbf7189c5f25a231bf8ec2e8e5c693582a04fab749cdc522c6927a3d2fb4a82", kill_on_drop: false }` [INFO] [stdout] 1dbf7189c5f25a231bf8ec2e8e5c693582a04fab749cdc522c6927a3d2fb4a82 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b096df60dcb5deb54f22f6e6ae603e8a872cc5524c3b40e065020e1b80a3f7be [INFO] running `Command { std: "docker" "start" "-a" "b096df60dcb5deb54f22f6e6ae603e8a872cc5524c3b40e065020e1b80a3f7be", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling bitflags v0.4.0 [INFO] [stderr] Compiling itertools v0.4.19 [INFO] [stderr] Compiling try_from v0.2.2 [INFO] [stderr] Compiling hex v0.2.0 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling nix v0.5.1 [INFO] [stderr] Compiling rand v0.5.6 [INFO] [stderr] Compiling socketcan v1.7.0 [INFO] [stderr] Compiling candid_server v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/can_reader.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | &self.clients.lock().unwrap().push(channel); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 49 | let _ = &self.clients.lock().unwrap().push(channel); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.72s [INFO] running `Command { std: "docker" "inspect" "b096df60dcb5deb54f22f6e6ae603e8a872cc5524c3b40e065020e1b80a3f7be", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b096df60dcb5deb54f22f6e6ae603e8a872cc5524c3b40e065020e1b80a3f7be", kill_on_drop: false }` [INFO] [stdout] b096df60dcb5deb54f22f6e6ae603e8a872cc5524c3b40e065020e1b80a3f7be [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 871ee4ddf4698c1d02ca5b6164ee4df52dba982b0d66e48f36a007460bc4e25a [INFO] running `Command { std: "docker" "start" "-a" "871ee4ddf4698c1d02ca5b6164ee4df52dba982b0d66e48f36a007460bc4e25a", kill_on_drop: false }` [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/can_reader.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | &self.clients.lock().unwrap().push(channel); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 49 | let _ = &self.clients.lock().unwrap().push(channel); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling candid_server v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/can_reader.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | &self.clients.lock().unwrap().push(channel); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 49 | let _ = &self.clients.lock().unwrap().push(channel); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.49s [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/candid_server-2f1bdf9a178d4178) [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/candid_server-93af0b6abb3a9e0d) [INFO] [stderr] Executable unittests src/bin/vcan_rand.rs (/opt/rustwide/target/debug/deps/vcan_rand-5a7f20019bfef757) [INFO] running `Command { std: "docker" "inspect" "871ee4ddf4698c1d02ca5b6164ee4df52dba982b0d66e48f36a007460bc4e25a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "871ee4ddf4698c1d02ca5b6164ee4df52dba982b0d66e48f36a007460bc4e25a", kill_on_drop: false }` [INFO] [stdout] 871ee4ddf4698c1d02ca5b6164ee4df52dba982b0d66e48f36a007460bc4e25a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 4d86c484ae44a7cf5bee1727a37a687fccf7f034f7aa1ba8977f74307bd011a5 [INFO] running `Command { std: "docker" "start" "-a" "4d86c484ae44a7cf5bee1727a37a687fccf7f034f7aa1ba8977f74307bd011a5", kill_on_drop: false }` [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/can_reader.rs:49:9 [INFO] [stderr] | [INFO] [stderr] 49 | &self.clients.lock().unwrap().push(channel); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 49 | let _ = &self.clients.lock().unwrap().push(channel); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `candid_server` (lib) generated 1 warning [INFO] [stderr] warning: `candid_server` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/candid_server-2f1bdf9a178d4178) [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] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/candid_server-93af0b6abb3a9e0d) [INFO] [stderr] Running unittests src/bin/vcan_rand.rs (/opt/rustwide/target/debug/deps/vcan_rand-5a7f20019bfef757) [INFO] [stdout] [INFO] [stderr] Doc-tests candid_server [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] [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] [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" "4d86c484ae44a7cf5bee1727a37a687fccf7f034f7aa1ba8977f74307bd011a5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4d86c484ae44a7cf5bee1727a37a687fccf7f034f7aa1ba8977f74307bd011a5", kill_on_drop: false }` [INFO] [stdout] 4d86c484ae44a7cf5bee1727a37a687fccf7f034f7aa1ba8977f74307bd011a5