[INFO] fetching crate ndhistogram 0.10.0...
[INFO] building ndhistogram-0.10.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate ndhistogram 0.10.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate ndhistogram 0.10.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ndhistogram 0.10.0
[INFO] tweaked toml for crates.io crate ndhistogram 0.10.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ndhistogram 0.10.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ndhistogram 0.10.0 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded version-sync v0.9.5
[INFO] [stderr]   Downloaded url v2.5.3
[INFO] [stderr]   Downloaded libc v0.2.162
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[INFO] [stdout] 1101b0fc1996967f96506160147147d1ba68a2eb02296a7b45acf614aca6a3ba
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[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling num-traits v0.2.19
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[INFO] [stderr]    Compiling ndhistogram v0.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.37s
[INFO] running `Command { std: "docker" "inspect" "1101b0fc1996967f96506160147147d1ba68a2eb02296a7b45acf614aca6a3ba", kill_on_drop: false }`
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[INFO] [stdout] 1101b0fc1996967f96506160147147d1ba68a2eb02296a7b45acf614aca6a3ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5927e726791c8386a9420730e8aa56e396fec94f6dacfae50a7c62942f88cdd9
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[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> tests/test_noflow_axis.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     format!("{}", ax);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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] 68 |     let _ = format!("{}", ax);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> tests/test_noflow_axis.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     format!("{:?}", ax);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let _ = format!("{:?}", ax);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> tests/test_ndhistogram_1d.rs:177:5
[INFO] [stdout]     |
[INFO] [stdout] 177 |     format!("{}", hist);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[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] 177 |     let _ = format!("{}", hist);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> tests/test_hashhistogram.rs:120:5
[INFO] [stdout]     |
[INFO] [stdout] 120 |     format!("{}", hist);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[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] 120 |     let _ = format!("{}", hist);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> tests/test_hashhistogram.rs:120:5
[INFO] [stdout]     |
[INFO] [stdout] 120 |     format!("{}", hist);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[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] 120 |     let _ = format!("{}", hist);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> tests/test_ndhistogram_1d.rs:177:5
[INFO] [stdout]     |
[INFO] [stdout] 177 |     format!("{}", hist);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 177 |     let _ = format!("{}", hist);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> tests/test_noflow_axis.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     format!("{}", ax);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let _ = format!("{}", ax);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> tests/test_noflow_axis.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     format!("{:?}", ax);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let _ = format!("{:?}", ax);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 58.28s
[INFO] running `Command { std: "docker" "inspect" "5927e726791c8386a9420730e8aa56e396fec94f6dacfae50a7c62942f88cdd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5927e726791c8386a9420730e8aa56e396fec94f6dacfae50a7c62942f88cdd9", kill_on_drop: false }`
[INFO] [stdout] 5927e726791c8386a9420730e8aa56e396fec94f6dacfae50a7c62942f88cdd9
