[INFO] fetching crate icentral-test-largest-bcc-speedup 0.1.0...
[INFO] testing icentral-test-largest-bcc-speedup-0.1.0 against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] extracting crate icentral-test-largest-bcc-speedup 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate icentral-test-largest-bcc-speedup 0.1.0
[INFO] finished tweaking crates.io crate icentral-test-largest-bcc-speedup 0.1.0
[INFO] tweaked toml for crates.io crate icentral-test-largest-bcc-speedup 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate icentral-test-largest-bcc-speedup 0.1.0 on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate icentral-test-largest-bcc-speedup 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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78a861fae77f93d154e7496c25c99b23fc7c4a659f0d4aa4c2b69ed7fdd39035
[INFO] running `Command { std: "docker" "start" "-a" "78a861fae77f93d154e7496c25c99b23fc7c4a659f0d4aa4c2b69ed7fdd39035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78a861fae77f93d154e7496c25c99b23fc7c4a659f0d4aa4c2b69ed7fdd39035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78a861fae77f93d154e7496c25c99b23fc7c4a659f0d4aa4c2b69ed7fdd39035", kill_on_drop: false }`
[INFO] [stdout] 78a861fae77f93d154e7496c25c99b23fc7c4a659f0d4aa4c2b69ed7fdd39035
[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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7bf88628cb58df33c1f40641f72500dc06c165635d4d35b3dc6cb2c439994faf
[INFO] running `Command { std: "docker" "start" "-a" "7bf88628cb58df33c1f40641f72500dc06c165635d4d35b3dc6cb2c439994faf", kill_on_drop: false }`
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[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:18:46
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut bcc_vec: Vec<GraphHash> = vec![];;
[INFO] [stdout]    |                                              ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     if let mut graph = graph.lock()? {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut min:    f64 = 0.0;
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let mut max:    f64 = 0.0;
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let mut median: f64 = 0.0;
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |     let mut mean:   f64 = 0.0;
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let mut stddev: f64 = 0.0;
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     for i in 0..num_edges_to_insert {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut min:    f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let mut max:    f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `median`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let mut median: f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_median`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mean`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |     let mut mean:   f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mean`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stddev`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let mut stddev: f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stddev`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:67:31
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut src: NodeId = NodeId::default();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dst` is never read
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:68:31
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut dst: NodeId = NodeId::default();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:99:31
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let mut src: NodeId = NodeId::default();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dst` is never read
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:100:31
[INFO] [stdout]     |
[INFO] [stdout] 100 |         let mut dst: NodeId = NodeId::default();
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `long_iter_perc` is never read
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:158:35
[INFO] [stdout]     |
[INFO] [stdout] 158 |     let mut long_iter_perc: f64 = 0.0;
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 05s
[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 1`
[INFO] running `Command { std: "docker" "inspect" "7bf88628cb58df33c1f40641f72500dc06c165635d4d35b3dc6cb2c439994faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bf88628cb58df33c1f40641f72500dc06c165635d4d35b3dc6cb2c439994faf", kill_on_drop: false }`
[INFO] [stdout] 7bf88628cb58df33c1f40641f72500dc06c165635d4d35b3dc6cb2c439994faf
[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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02373ae9c30cb632e5346ca43817ab0713dc9003619ba1c2f68a3fbf1a06f933
[INFO] running `Command { std: "docker" "start" "-a" "02373ae9c30cb632e5346ca43817ab0713dc9003619ba1c2f68a3fbf1a06f933", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:18:46
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut bcc_vec: Vec<GraphHash> = vec![];;
[INFO] [stdout]    |                                              ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     if let mut graph = graph.lock()? {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut min:    f64 = 0.0;
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let mut max:    f64 = 0.0;
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let mut median: f64 = 0.0;
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |     let mut mean:   f64 = 0.0;
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let mut stddev: f64 = 0.0;
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     for i in 0..num_edges_to_insert {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut min:    f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let mut max:    f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `median`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let mut median: f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_median`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mean`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |     let mut mean:   f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mean`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stddev`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let mut stddev: f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stddev`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:67:31
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut src: NodeId = NodeId::default();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dst` is never read
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:68:31
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut dst: NodeId = NodeId::default();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:99:31
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let mut src: NodeId = NodeId::default();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dst` is never read
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:100:31
[INFO] [stdout]     |
[INFO] [stdout] 100 |         let mut dst: NodeId = NodeId::default();
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `long_iter_perc` is never read
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:158:35
[INFO] [stdout]     |
[INFO] [stdout] 158 |     let mut long_iter_perc: f64 = 0.0;
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling icentral-test-largest-bcc-speedup v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:18:46
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut bcc_vec: Vec<GraphHash> = vec![];;
[INFO] [stdout]    |                                              ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     if let mut graph = graph.lock()? {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut min:    f64 = 0.0;
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let mut max:    f64 = 0.0;
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let mut median: f64 = 0.0;
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |     let mut mean:   f64 = 0.0;
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let mut stddev: f64 = 0.0;
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     for i in 0..num_edges_to_insert {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut min:    f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let mut max:    f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `median`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let mut median: f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_median`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mean`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |     let mut mean:   f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mean`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stddev`
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let mut stddev: f64 = 0.0;
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stddev`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:67:31
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut src: NodeId = NodeId::default();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dst` is never read
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:68:31
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut dst: NodeId = NodeId::default();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/test_largest_bcc_speedup.rs:99:31
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let mut src: NodeId = NodeId::default();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dst` is never read
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:100:31
[INFO] [stdout]     |
[INFO] [stdout] 100 |         let mut dst: NodeId = NodeId::default();
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `long_iter_perc` is never read
[INFO] [stdout]    --> src/test_largest_bcc_speedup.rs:158:35
[INFO] [stdout]     |
[INFO] [stdout] 158 |     let mut long_iter_perc: f64 = 0.0;
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.33s
[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 1`
[INFO] running `Command { std: "docker" "inspect" "02373ae9c30cb632e5346ca43817ab0713dc9003619ba1c2f68a3fbf1a06f933", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02373ae9c30cb632e5346ca43817ab0713dc9003619ba1c2f68a3fbf1a06f933", kill_on_drop: false }`
[INFO] [stdout] 02373ae9c30cb632e5346ca43817ab0713dc9003619ba1c2f68a3fbf1a06f933
[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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ebe6a8d55bfef7e1e57577c72f051856ae20db3af802062d9018ac4b87784155
[INFO] running `Command { std: "docker" "start" "-a" "ebe6a8d55bfef7e1e57577c72f051856ae20db3af802062d9018ac4b87784155", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/test_largest_bcc_speedup.rs:18:46
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut bcc_vec: Vec<GraphHash> = vec![];;
[INFO] [stderr]    |                                              ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable `if let` pattern
[INFO] [stderr]   --> src/test_largest_bcc_speedup.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 |     if let mut graph = graph.lock()? {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stderr]    = help: consider replacing the `if let` with a `let`
[INFO] [stderr]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/test_largest_bcc_speedup.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |     let mut min:    f64 = 0.0;
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/test_largest_bcc_speedup.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |     let mut max:    f64 = 0.0;
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/test_largest_bcc_speedup.rs:131:9
[INFO] [stderr]     |
[INFO] [stderr] 131 |     let mut median: f64 = 0.0;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/test_largest_bcc_speedup.rs:132:9
[INFO] [stderr]     |
[INFO] [stderr] 132 |     let mut mean:   f64 = 0.0;
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/test_largest_bcc_speedup.rs:133:9
[INFO] [stderr]     |
[INFO] [stderr] 133 |     let mut stddev: f64 = 0.0;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/test_largest_bcc_speedup.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |     for i in 0..num_edges_to_insert {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `min`
[INFO] [stderr]    --> src/test_largest_bcc_speedup.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |     let mut min:    f64 = 0.0;
[INFO] [stderr]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `max`
[INFO] [stderr]    --> src/test_largest_bcc_speedup.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |     let mut max:    f64 = 0.0;
[INFO] [stderr]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `median`
[INFO] [stderr]    --> src/test_largest_bcc_speedup.rs:131:9
[INFO] [stderr]     |
[INFO] [stderr] 131 |     let mut median: f64 = 0.0;
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_median`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mean`
[INFO] [stderr]    --> src/test_largest_bcc_speedup.rs:132:9
[INFO] [stderr]     |
[INFO] [stderr] 132 |     let mut mean:   f64 = 0.0;
[INFO] [stderr]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mean`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stddev`
[INFO] [stderr]    --> src/test_largest_bcc_speedup.rs:133:9
[INFO] [stderr]     |
[INFO] [stderr] 133 |     let mut stddev: f64 = 0.0;
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stddev`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `src` is never read
[INFO] [stderr]   --> src/test_largest_bcc_speedup.rs:67:31
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut src: NodeId = NodeId::default();
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `dst` is never read
[INFO] [stderr]   --> src/test_largest_bcc_speedup.rs:68:31
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let mut dst: NodeId = NodeId::default();
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `src` is never read
[INFO] [stderr]   --> src/test_largest_bcc_speedup.rs:99:31
[INFO] [stderr]    |
[INFO] [stderr] 99 |         let mut src: NodeId = NodeId::default();
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `dst` is never read
[INFO] [stderr]    --> src/test_largest_bcc_speedup.rs:100:31
[INFO] [stderr]     |
[INFO] [stderr] 100 |         let mut dst: NodeId = NodeId::default();
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `long_iter_perc` is never read
[INFO] [stderr]    --> src/test_largest_bcc_speedup.rs:158:35
[INFO] [stderr]     |
[INFO] [stderr] 158 |     let mut long_iter_perc: f64 = 0.0;
[INFO] [stderr]     |                                   ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `icentral-test-largest-bcc-speedup` (lib) generated 18 warnings (run `cargo fix --lib -p icentral-test-largest-bcc-speedup` to apply 11 suggestions)
[INFO] [stderr] warning: `icentral-test-largest-bcc-speedup` (lib test) generated 18 warnings (18 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.23s
[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 1`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/icentral_test_largest_bcc_speedup-798a8b53b31702ef)
[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] [stderr]    Doc-tests icentral_test_largest_bcc_speedup
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/test_largest_bcc_speedup.rs:18:46
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut bcc_vec: Vec<GraphHash> = vec![];;
[INFO] [stderr]    |                                              ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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" "ebe6a8d55bfef7e1e57577c72f051856ae20db3af802062d9018ac4b87784155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebe6a8d55bfef7e1e57577c72f051856ae20db3af802062d9018ac4b87784155", kill_on_drop: false }`
[INFO] [stdout] ebe6a8d55bfef7e1e57577c72f051856ae20db3af802062d9018ac4b87784155
