[INFO] crate tcb 0.1.202 is already in cache
[INFO] testing tcb-0.1.202 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate tcb 0.1.202 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate tcb 0.1.202 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tcb 0.1.202
[INFO] finished tweaking crates.io crate tcb 0.1.202
[INFO] tweaked toml for crates.io crate tcb 0.1.202 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate tcb 0.1.202 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8fc574b635083a26b56480eb512a2e484d0949c20521d867419d3a5f600da975
[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" "8fc574b635083a26b56480eb512a2e484d0949c20521d867419d3a5f600da975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fc574b635083a26b56480eb512a2e484d0949c20521d867419d3a5f600da975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fc574b635083a26b56480eb512a2e484d0949c20521d867419d3a5f600da975", kill_on_drop: false }`
[INFO] [stdout] 8fc574b635083a26b56480eb512a2e484d0949c20521d867419d3a5f600da975
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04846707a42ff15e5a5d1348fd48e8372fe5546b99cf7111313aafd628531479
[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" "04846707a42ff15e5a5d1348fd48e8372fe5546b99cf7111313aafd628531479", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling bincode v1.2.1
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling tcb v0.1.202 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.61s
[INFO] running `Command { std: "docker" "inspect" "04846707a42ff15e5a5d1348fd48e8372fe5546b99cf7111313aafd628531479", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04846707a42ff15e5a5d1348fd48e8372fe5546b99cf7111313aafd628531479", kill_on_drop: false }`
[INFO] [stdout] 04846707a42ff15e5a5d1348fd48e8372fe5546b99cf7111313aafd628531479
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ecff0e0861ba8802745e6690c7a7c70ef4f673ae55f696b3975cd71ca705e81
[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" "9ecff0e0861ba8802745e6690c7a7c70ef4f673ae55f696b3975cd71ca705e81", kill_on_drop: false }`
[INFO] [stderr]    Compiling tcb v0.1.202 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `blocking_delivery`
[INFO] [stdout]   --> examples/vv_client.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let blocking_delivery = vv.recv()?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_blocking_delivery`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `non_blocking_delivery`
[INFO] [stdout]   --> examples/vv_client.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let non_blocking_delivery = vv.try_recv()?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_non_blocking_delivery`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timeout_delivery`
[INFO] [stdout]   --> examples/vv_client.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let timeout_delivery = vv.recv_timeout(Duration::from_secs(1))?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timeout_delivery`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sent_message_context`
[INFO] [stdout]   --> examples/graph_client.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let sent_message_context = graph.send(serialized_message);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sent_message_context`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `non_blocking_delivery`
[INFO] [stdout]   --> examples/graph_client.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let non_blocking_delivery = graph.try_recv()?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_non_blocking_delivery`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timeout_delivery`
[INFO] [stdout]   --> examples/graph_client.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let timeout_delivery = graph.recv_timeout(Duration::from_secs(1))?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timeout_delivery`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `Command { std: "docker" "inspect" "9ecff0e0861ba8802745e6690c7a7c70ef4f673ae55f696b3975cd71ca705e81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ecff0e0861ba8802745e6690c7a7c70ef4f673ae55f696b3975cd71ca705e81", kill_on_drop: false }`
[INFO] [stdout] 9ecff0e0861ba8802745e6690c7a7c70ef4f673ae55f696b3975cd71ca705e81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 37dac72c105bad81871904c6bf320ab848f719651061899d4c5d2ed9131e4b2a
[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" "37dac72c105bad81871904c6bf320ab848f719651061899d4c5d2ed9131e4b2a", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `sent_message_context`
[INFO] [stderr]   --> examples/graph_client.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let sent_message_context = graph.send(serialized_message);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sent_message_context`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `non_blocking_delivery`
[INFO] [stderr]   --> examples/graph_client.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let non_blocking_delivery = graph.try_recv()?;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_non_blocking_delivery`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `timeout_delivery`
[INFO] [stderr]   --> examples/graph_client.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let timeout_delivery = graph.recv_timeout(Duration::from_secs(1))?;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timeout_delivery`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `blocking_delivery`
[INFO] [stderr]   --> examples/vv_client.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let blocking_delivery = vv.recv()?;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_blocking_delivery`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `non_blocking_delivery`
[INFO] [stderr]   --> examples/vv_client.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let non_blocking_delivery = vv.try_recv()?;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_non_blocking_delivery`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `timeout_delivery`
[INFO] [stderr]   --> examples/vv_client.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let timeout_delivery = vv.recv_timeout(Duration::from_secs(1))?;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timeout_delivery`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tcb-cedee168689137a6
[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
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tcb
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "37dac72c105bad81871904c6bf320ab848f719651061899d4c5d2ed9131e4b2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37dac72c105bad81871904c6bf320ab848f719651061899d4c5d2ed9131e4b2a", kill_on_drop: false }`
[INFO] [stdout] 37dac72c105bad81871904c6bf320ab848f719651061899d4c5d2ed9131e4b2a