[INFO] fetching crate icentral-rbfs 0.1.0...
[INFO] checking icentral-rbfs-0.1.0 against try#f77b5bc6c7c84df104f86b0dd01d9490e3923fa8 for pr-147834
[INFO] extracting crate icentral-rbfs 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate icentral-rbfs 0.1.0
[INFO] finished tweaking crates.io crate icentral-rbfs 0.1.0
[INFO] tweaked toml for crates.io crate icentral-rbfs 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate icentral-rbfs 0.1.0 on toolchain f77b5bc6c7c84df104f86b0dd01d9490e3923fa8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate icentral-rbfs 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc2b3e415eabb6f0c4eb6f485dde56a51e3ae72c86f8c895a3862d139f4a6258
[INFO] running `Command { std: "docker" "start" "-a" "bc2b3e415eabb6f0c4eb6f485dde56a51e3ae72c86f8c895a3862d139f4a6258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc2b3e415eabb6f0c4eb6f485dde56a51e3ae72c86f8c895a3862d139f4a6258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc2b3e415eabb6f0c4eb6f485dde56a51e3ae72c86f8c895a3862d139f4a6258", kill_on_drop: false }`
[INFO] [stdout] bc2b3e415eabb6f0c4eb6f485dde56a51e3ae72c86f8c895a3862d139f4a6258
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] caaf383855c936e241a1a90fac705638c55c8c3f7d55c95b8ad6109b514573d3
[INFO] running `Command { std: "docker" "start" "-a" "caaf383855c936e241a1a90fac705638c55c8c3f7d55c95b8ad6109b514573d3", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `delta_bc_of_vertices`
[INFO] [stdout]   --> src/rbfs_bcc.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     delta_bc_of_vertices: &mut BetweennessScores,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delta_bc_of_vertices`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/rbfs_bcc.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta_bc_of_vertices`
[INFO] [stdout]    --> src/rbfs_bcc.rs:114:5
[INFO] [stdout]     |
[INFO] [stdout] 114 |     delta_bc_of_vertices: &mut BetweennessScores,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delta_bc_of_vertices`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/rbfs_bcc.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]     |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `component`
[INFO] [stdout]    --> src/rbfs_bcc.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 |     component:            &mut Component,
[INFO] [stdout]     |     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_component`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `component`
[INFO] [stdout]    --> src/rbfs_bcc.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 245 |     component:            &mut Component,
[INFO] [stdout]     |     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_component`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/rbfs_bcc.rs:246:5
[INFO] [stdout]     |
[INFO] [stdout] 246 |     source:               NodeId,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/rbfs_bcc.rs:248:5
[INFO] [stdout]     |
[INFO] [stdout] 248 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]     |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `component`
[INFO] [stdout]    --> src/rbfs_bcc.rs:268:5
[INFO] [stdout]     |
[INFO] [stdout] 268 |     component:            &mut Component,
[INFO] [stdout]     |     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_component`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/rbfs_bcc.rs:269:5
[INFO] [stdout]     |
[INFO] [stdout] 269 |     source:               NodeId,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/rbfs_bcc.rs:271:5
[INFO] [stdout]     |
[INFO] [stdout] 271 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]     |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta_bc_of_vertices`
[INFO] [stdout]   --> src/rbfs_graph.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 99 |     delta_bc_of_vertices: &mut BetweennessScores,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delta_bc_of_vertices`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/rbfs_graph.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     source:               NodeId,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/rbfs_graph.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]     |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/rbfs_graph.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     source:               NodeId,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/rbfs_graph.rs:182:5
[INFO] [stdout]     |
[INFO] [stdout] 182 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]     |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/rbfs_graph.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 200 |     source:               NodeId,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/rbfs_graph.rs:202:5
[INFO] [stdout]     |
[INFO] [stdout] 202 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]     |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/rbfs_bcc.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | /         rbfs_bcc_step(
[INFO] [stdout] 24 | |             v_n,
[INFO] [stdout] 25 | |             delta_bc_of_vertices,
[INFO] [stdout] 26 | |             component,
[INFO] [stdout] ...  |
[INFO] [stdout] 29 | |             op,
[INFO] [stdout] 30 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let _ = rbfs_bcc_step(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta_bc_of_vertices`
[INFO] [stdout]   --> src/rbfs_bcc.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     delta_bc_of_vertices: &mut BetweennessScores,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delta_bc_of_vertices`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/rbfs_bcc.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta_bc_of_vertices`
[INFO] [stdout]    --> src/rbfs_bcc.rs:114:5
[INFO] [stdout]     |
[INFO] [stdout] 114 |     delta_bc_of_vertices: &mut BetweennessScores,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delta_bc_of_vertices`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/rbfs_bcc.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]     |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `component`
[INFO] [stdout]    --> src/rbfs_bcc.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 |     component:            &mut Component,
[INFO] [stdout]     |     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_component`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `component`
[INFO] [stdout]    --> src/rbfs_bcc.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 245 |     component:            &mut Component,
[INFO] [stdout]     |     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_component`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/rbfs_bcc.rs:246:5
[INFO] [stdout]     |
[INFO] [stdout] 246 |     source:               NodeId,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/rbfs_bcc.rs:248:5
[INFO] [stdout]     |
[INFO] [stdout] 248 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]     |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `component`
[INFO] [stdout]    --> src/rbfs_bcc.rs:268:5
[INFO] [stdout]     |
[INFO] [stdout] 268 |     component:            &mut Component,
[INFO] [stdout]     |     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_component`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/rbfs_bcc.rs:269:5
[INFO] [stdout]     |
[INFO] [stdout] 269 |     source:               NodeId,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/rbfs_bcc.rs:271:5
[INFO] [stdout]     |
[INFO] [stdout] 271 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]     |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta_bc_of_vertices`
[INFO] [stdout]   --> src/rbfs_graph.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 99 |     delta_bc_of_vertices: &mut BetweennessScores,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delta_bc_of_vertices`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/rbfs_graph.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     source:               NodeId,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/rbfs_graph.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]     |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/rbfs_graph.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     source:               NodeId,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/rbfs_graph.rs:182:5
[INFO] [stdout]     |
[INFO] [stdout] 182 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]     |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/rbfs_graph.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 200 |     source:               NodeId,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/rbfs_graph.rs:202:5
[INFO] [stdout]     |
[INFO] [stdout] 202 |     op:                   &Option<RbfsOperation>) 
[INFO] [stdout]     |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/rbfs_bcc.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | /         rbfs_bcc_step(
[INFO] [stdout] 24 | |             v_n,
[INFO] [stdout] 25 | |             delta_bc_of_vertices,
[INFO] [stdout] 26 | |             component,
[INFO] [stdout] ...  |
[INFO] [stdout] 29 | |             op,
[INFO] [stdout] 30 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let _ = rbfs_bcc_step(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 58.43s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: icentral-neighbors v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "caaf383855c936e241a1a90fac705638c55c8c3f7d55c95b8ad6109b514573d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caaf383855c936e241a1a90fac705638c55c8c3f7d55c95b8ad6109b514573d3", kill_on_drop: false }`
[INFO] [stdout] caaf383855c936e241a1a90fac705638c55c8c3f7d55c95b8ad6109b514573d3
