[INFO] fetching crate mendes-derive 0.0.6...
[INFO] testing mendes-derive-0.0.6 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate mendes-derive 0.0.6 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate mendes-derive 0.0.6 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mendes-derive 0.0.6
[INFO] finished tweaking crates.io crate mendes-derive 0.0.6
[INFO] tweaked toml for crates.io crate mendes-derive 0.0.6 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca3e7fe55e906eeb4ae1611b73a3b8af66540b2839215cb1665d832919cf5e1a
[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" "ca3e7fe55e906eeb4ae1611b73a3b8af66540b2839215cb1665d832919cf5e1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca3e7fe55e906eeb4ae1611b73a3b8af66540b2839215cb1665d832919cf5e1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca3e7fe55e906eeb4ae1611b73a3b8af66540b2839215cb1665d832919cf5e1a", kill_on_drop: false }`
[INFO] [stdout] ca3e7fe55e906eeb4ae1611b73a3b8af66540b2839215cb1665d832919cf5e1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--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] 6e9afe60930e7754c4b2694287156e4398519c162219296952ccb5a76b3f5eb0
[INFO] running `Command { std: "docker" "start" "-a" "6e9afe60930e7754c4b2694287156e4398519c162219296952ccb5a76b3f5eb0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling mendes-derive v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 | /     mem::replace(
[INFO] [stdout] 103 | |         block,
[INFO] [stdout] 104 | |         Box::new(syn::parse::<syn::Block>(new.into()).unwrap()),
[INFO] [stdout] 105 | |     );
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.84s
[INFO] running `Command { std: "docker" "inspect" "6e9afe60930e7754c4b2694287156e4398519c162219296952ccb5a76b3f5eb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e9afe60930e7754c4b2694287156e4398519c162219296952ccb5a76b3f5eb0", kill_on_drop: false }`
[INFO] [stdout] 6e9afe60930e7754c4b2694287156e4398519c162219296952ccb5a76b3f5eb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--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] d1f78d473e21084d1096a38dedae3108ac3038b7480bab26e5efb8eeca5ec866
[INFO] running `Command { std: "docker" "start" "-a" "d1f78d473e21084d1096a38dedae3108ac3038b7480bab26e5efb8eeca5ec866", kill_on_drop: false }`
[INFO] [stderr]    Compiling mendes-derive v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 | /     mem::replace(
[INFO] [stdout] 103 | |         block,
[INFO] [stdout] 104 | |         Box::new(syn::parse::<syn::Block>(new.into()).unwrap()),
[INFO] [stdout] 105 | |     );
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 | /     mem::replace(
[INFO] [stdout] 103 | |         block,
[INFO] [stdout] 104 | |         Box::new(syn::parse::<syn::Block>(new.into()).unwrap()),
[INFO] [stdout] 105 | |     );
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "d1f78d473e21084d1096a38dedae3108ac3038b7480bab26e5efb8eeca5ec866", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1f78d473e21084d1096a38dedae3108ac3038b7480bab26e5efb8eeca5ec866", kill_on_drop: false }`
[INFO] [stdout] d1f78d473e21084d1096a38dedae3108ac3038b7480bab26e5efb8eeca5ec866
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5504cfbe859b9db103818ace2c4b871921870c8785bdad84977f0d5d0d8a3abe
[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" "5504cfbe859b9db103818ace2c4b871921870c8785bdad84977f0d5d0d8a3abe", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/lib.rs:102:5
[INFO] [stderr]     |
[INFO] [stderr] 102 | /     mem::replace(
[INFO] [stderr] 103 | |         block,
[INFO] [stderr] 104 | |         Box::new(syn::parse::<syn::Block>(new.into()).unwrap()),
[INFO] [stderr] 105 | |     );
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/lib.rs:102:5
[INFO] [stderr]     |
[INFO] [stderr] 102 | /     mem::replace(
[INFO] [stderr] 103 | |         block,
[INFO] [stderr] 104 | |         Box::new(syn::parse::<syn::Block>(new.into()).unwrap()),
[INFO] [stderr] 105 | |     );
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mendes_derive-82aa40d1241474e0
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mendes-derive
[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" "5504cfbe859b9db103818ace2c4b871921870c8785bdad84977f0d5d0d8a3abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5504cfbe859b9db103818ace2c4b871921870c8785bdad84977f0d5d0d8a3abe", kill_on_drop: false }`
[INFO] [stdout] 5504cfbe859b9db103818ace2c4b871921870c8785bdad84977f0d5d0d8a3abe