[INFO] fetching crate candid_server 0.3.0... [INFO] testing candid_server-0.3.0 against beta-2021-09-08 for beta-1.56-1 [INFO] extracting crate candid_server 0.3.0 into /workspace/builds/worker-6/source [INFO] validating manifest of crates.io crate candid_server 0.3.0 on toolchain beta-2021-09-08 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-6/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-2021-09-08" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 008112cb25537bcb0034a4692ce7b5e9a81dd0eb765e1a30d837ebe413a48b3a [INFO] running `Command { std: "docker" "start" "-a" "008112cb25537bcb0034a4692ce7b5e9a81dd0eb765e1a30d837ebe413a48b3a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "008112cb25537bcb0034a4692ce7b5e9a81dd0eb765e1a30d837ebe413a48b3a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "008112cb25537bcb0034a4692ce7b5e9a81dd0eb765e1a30d837ebe413a48b3a", kill_on_drop: false }` [INFO] [stdout] 008112cb25537bcb0034a4692ce7b5e9a81dd0eb765e1a30d837ebe413a48b3a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f43144a4bfc74bf7bfce2c89cdd67fdc345952452d4e5174e5d53c3a085fa5c3 [INFO] running `Command { std: "docker" "start" "-a" "f43144a4bfc74bf7bfce2c89cdd67fdc345952452d4e5174e5d53c3a085fa5c3", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.101 [INFO] [stderr] Compiling rand_core v0.4.2 [INFO] [stderr] Compiling bitflags v0.4.0 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling hex v0.2.0 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling try_from v0.2.2 [INFO] [stderr] Compiling itertools v0.4.19 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling vec_map v0.8.2 [INFO] [stderr] Compiling byteorder v1.4.3 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling nix v0.5.1 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling rand v0.5.6 [INFO] [stderr] Compiling clap v2.33.3 [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 16.40s [INFO] running `Command { std: "docker" "inspect" "f43144a4bfc74bf7bfce2c89cdd67fdc345952452d4e5174e5d53c3a085fa5c3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f43144a4bfc74bf7bfce2c89cdd67fdc345952452d4e5174e5d53c3a085fa5c3", kill_on_drop: false }` [INFO] [stdout] f43144a4bfc74bf7bfce2c89cdd67fdc345952452d4e5174e5d53c3a085fa5c3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 142c74619c545cc3f67d1c01da999e244b466990dac4a20bb7034eca58dbb446 [INFO] running `Command { std: "docker" "start" "-a" "142c74619c545cc3f67d1c01da999e244b466990dac4a20bb7034eca58dbb446", kill_on_drop: false }` [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] [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 1.05s [INFO] running `Command { std: "docker" "inspect" "142c74619c545cc3f67d1c01da999e244b466990dac4a20bb7034eca58dbb446", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "142c74619c545cc3f67d1c01da999e244b466990dac4a20bb7034eca58dbb446", kill_on_drop: false }` [INFO] [stdout] 142c74619c545cc3f67d1c01da999e244b466990dac4a20bb7034eca58dbb446 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] c1e686fa62c19ce36138376e0b8cb1b8a85afbe4934f7f2e8f25f5a048029caa [INFO] running `Command { std: "docker" "start" "-a" "c1e686fa62c19ce36138376e0b8cb1b8a85afbe4934f7f2e8f25f5a048029caa", 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 0.03s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/candid_server-cec42ea871f63794) [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 (/opt/rustwide/target/debug/deps/candid_server-553816143496ad89) [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/vcan_rand-83ac5d6e1a0f1c1f) [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] [stderr] Doc-tests candid_server [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" "c1e686fa62c19ce36138376e0b8cb1b8a85afbe4934f7f2e8f25f5a048029caa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c1e686fa62c19ce36138376e0b8cb1b8a85afbe4934f7f2e8f25f5a048029caa", kill_on_drop: false }` [INFO] [stdout] c1e686fa62c19ce36138376e0b8cb1b8a85afbe4934f7f2e8f25f5a048029caa