[INFO] fetching crate tcb 0.1.202...
[INFO] checking tcb-0.1.202 against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] extracting crate tcb 0.1.202 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate tcb 0.1.202 on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "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-3/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" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c510ccfd78811ace78a46f5298f888e64d7d5e05bb5c96c1f75e8173f3194b0
[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" "1c510ccfd78811ace78a46f5298f888e64d7d5e05bb5c96c1f75e8173f3194b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c510ccfd78811ace78a46f5298f888e64d7d5e05bb5c96c1f75e8173f3194b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c510ccfd78811ace78a46f5298f888e64d7d5e05bb5c96c1f75e8173f3194b0", kill_on_drop: false }`
[INFO] [stdout] 1c510ccfd78811ace78a46f5298f888e64d7d5e05bb5c96c1f75e8173f3194b0
[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=forbid" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "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] e560c0d16f704192611e50cf57630711d4a24771ee858ac51efb02207ccc6e98
[INFO] running `Command { std: "docker" "start" "-a" "e560c0d16f704192611e50cf57630711d4a24771ee858ac51efb02207ccc6e98", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]     Checking bit-vec v0.6.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]     Checking 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: 3 warnings emitted
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.95s
[INFO] running `Command { std: "docker" "inspect" "e560c0d16f704192611e50cf57630711d4a24771ee858ac51efb02207ccc6e98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e560c0d16f704192611e50cf57630711d4a24771ee858ac51efb02207ccc6e98", kill_on_drop: false }`
[INFO] [stdout] e560c0d16f704192611e50cf57630711d4a24771ee858ac51efb02207ccc6e98
