[INFO] crate new-home-application 0.1.3 is already in cache
[INFO] checking new-home-application-0.1.3 against master#1557fb031b272b4c5bfcc7de5df7eddc7b36a584 for pr-73166
[INFO] extracting crate new-home-application 0.1.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate new-home-application 0.1.3 on toolchain 1557fb031b272b4c5bfcc7de5df7eddc7b36a584
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate new-home-application 0.1.3
[INFO] finished tweaking crates.io crate new-home-application 0.1.3
[INFO] tweaked toml for crates.io crate new-home-application 0.1.3 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate new-home-application 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa947f6d779829212aa9afd6c289e94452d5ad83fdcadc3dd19bab438a4514ee
[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" "aa947f6d779829212aa9afd6c289e94452d5ad83fdcadc3dd19bab438a4514ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa947f6d779829212aa9afd6c289e94452d5ad83fdcadc3dd19bab438a4514ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa947f6d779829212aa9afd6c289e94452d5ad83fdcadc3dd19bab438a4514ee", kill_on_drop: false }`
[INFO] [stdout] aa947f6d779829212aa9afd6c289e94452d5ad83fdcadc3dd19bab438a4514ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7e8f8367e3a71a6a949501c3b237db93738c0d80c2a367ed4be6e397facc99fa
[INFO] running `Command { std: "docker" "start" "-a" "7e8f8367e3a71a6a949501c3b237db93738c0d80c2a367ed4be6e397facc99fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking normalize-line-endings v0.2.2
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking downcast v0.10.0
[INFO] [stderr]     Checking ryu v1.0.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking regex v1.3.3
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking float-cmp v0.5.3
[INFO] [stderr]     Checking predicates v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling mockall_derive v0.6.0
[INFO] [stderr]     Checking mockall v0.6.0
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking new-home-application v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_application_framework.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     mock! {
[INFO] [stdout] 15 | |         TestFramework {}
[INFO] [stdout] 16 | |
[INFO] [stdout] 17 | |         trait ApplicationFramework {
[INFO] [stdout] ...  |
[INFO] [stdout] 25 | |         }
[INFO] [stdout] 26 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_application_framework.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     mock! {
[INFO] [stdout] 15 | |         TestFramework {}
[INFO] [stdout] 16 | |
[INFO] [stdout] 17 | |         trait ApplicationFramework {
[INFO] [stdout] ...  |
[INFO] [stdout] 25 | |         }
[INFO] [stdout] 26 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_application_framework.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     mock! {
[INFO] [stdout] 29 | |         TestCommunicationManager {}
[INFO] [stdout] 30 | |
[INFO] [stdout] 31 | |         trait CommunicationManager {
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |         }
[INFO] [stdout] 36 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_communication_manager.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     mock! {
[INFO] [stdout] 18 | |         TestTcpServer {}
[INFO] [stdout] 19 | |
[INFO] [stdout] 20 | |         trait TcpServer {
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |         }
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_communication_manager.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     mock! {
[INFO] [stdout] 18 | |         TestTcpServer {}
[INFO] [stdout] 19 | |
[INFO] [stdout] 20 | |         trait TcpServer {
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |         }
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_communication_manager.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | /     mock! {
[INFO] [stdout] 28 | |         TestReader {}
[INFO] [stdout] 29 | |
[INFO] [stdout] 30 | |         trait TcpReader {
[INFO] [stdout] 31 | |             fn read_line(&mut self) -> Result<String, Error>;
[INFO] [stdout] 32 | |         }
[INFO] [stdout] 33 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_communication_manager.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | /     mock! {
[INFO] [stdout] 36 | |         TestWriter {}
[INFO] [stdout] 37 | |
[INFO] [stdout] 38 | |         trait TcpWriter {
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |         }
[INFO] [stdout] 45 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_info_command.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     mock! {
[INFO] [stdout] 16 | |         TestMethodManager {}
[INFO] [stdout] 17 | |
[INFO] [stdout] 18 | |         trait MethodManager {
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |         }
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_info_command.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     mock! {
[INFO] [stdout] 16 | |         TestMethodManager {}
[INFO] [stdout] 17 | |
[INFO] [stdout] 18 | |         trait MethodManager {
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |         }
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_help_command.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     mock! {
[INFO] [stdout] 17 | |         TestMethodManager {}
[INFO] [stdout] 18 | |
[INFO] [stdout] 19 | |         trait MethodManager {
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |         }
[INFO] [stdout] 29 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_help_command.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     mock! {
[INFO] [stdout] 17 | |         TestMethodManager {}
[INFO] [stdout] 18 | |
[INFO] [stdout] 19 | |         trait MethodManager {
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |         }
[INFO] [stdout] 29 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_client_handler.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | /     mock! {
[INFO] [stdout] 21 | |         TestReader {}
[INFO] [stdout] 22 | |
[INFO] [stdout] 23 | |         trait TcpReader {
[INFO] [stdout] 24 | |             fn read_line(&mut self) -> Result<String, Error>;
[INFO] [stdout] 25 | |         }
[INFO] [stdout] 26 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_client_handler.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | /     mock! {
[INFO] [stdout] 21 | |         TestReader {}
[INFO] [stdout] 22 | |
[INFO] [stdout] 23 | |         trait TcpReader {
[INFO] [stdout] 24 | |             fn read_line(&mut self) -> Result<String, Error>;
[INFO] [stdout] 25 | |         }
[INFO] [stdout] 26 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_client_handler.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     mock! {
[INFO] [stdout] 29 | |         TestWriter {}
[INFO] [stdout] 30 | |
[INFO] [stdout] 31 | |         trait TcpWriter {
[INFO] [stdout] ...  |
[INFO] [stdout] 37 | |         }
[INFO] [stdout] 38 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> tests/test_client_handler.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | /     mock! {
[INFO] [stdout] 41 | |         TestMethodManager {}
[INFO] [stdout] 42 | |
[INFO] [stdout] 43 | |         trait MethodManager {
[INFO] [stdout] ...  |
[INFO] [stdout] 52 | |         }
[INFO] [stdout] 53 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 57.81s
[INFO] running `Command { std: "docker" "inspect" "7e8f8367e3a71a6a949501c3b237db93738c0d80c2a367ed4be6e397facc99fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e8f8367e3a71a6a949501c3b237db93738c0d80c2a367ed4be6e397facc99fa", kill_on_drop: false }`
[INFO] [stdout] 7e8f8367e3a71a6a949501c3b237db93738c0d80c2a367ed4be6e397facc99fa