[INFO] fetching crate nclist 0.1.1... [INFO] building nclist-0.1.1 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1 [INFO] extracting crate nclist 0.1.1 into /workspace/builds/worker-4-tc2/source [INFO] started tweaking crates.io crate nclist 0.1.1 [INFO] finished tweaking crates.io crate nclist 0.1.1 [INFO] tweaked toml for crates.io crate nclist 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate nclist 0.1.1 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 74 packages to latest compatible versions [INFO] [stderr] Adding criterion v0.3.6 (available: v0.7.0) [INFO] [stderr] Adding itertools v0.8.2 (available: v0.14.0) [INFO] [stderr] Adding rand v0.7.3 (available: v0.9.2) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ec253ba908725a093d6d529e9485c04bd81d498a972b0779fc0d8ff8c54856b8 [INFO] running `Command { std: "docker" "start" "-a" "ec253ba908725a093d6d529e9485c04bd81d498a972b0779fc0d8ff8c54856b8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ec253ba908725a093d6d529e9485c04bd81d498a972b0779fc0d8ff8c54856b8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ec253ba908725a093d6d529e9485c04bd81d498a972b0779fc0d8ff8c54856b8", kill_on_drop: false }` [INFO] [stdout] ec253ba908725a093d6d529e9485c04bd81d498a972b0779fc0d8ff8c54856b8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2d79f079e3292acee1e93bcb66cd8fccf517980a017c1cf9f999296cc6af87b6 [INFO] running `Command { std: "docker" "start" "-a" "2d79f079e3292acee1e93bcb66cd8fccf517980a017c1cf9f999296cc6af87b6", kill_on_drop: false }` [INFO] [stderr] Compiling itertools v0.8.2 [INFO] [stderr] Compiling nclist v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:222:17 [INFO] [stdout] | [INFO] [stdout] 222 | std::mem::replace(&mut self.intervals, intervals); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [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] 222 | let _ = std::mem::replace(&mut self.intervals, intervals); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:223:17 [INFO] [stdout] | [INFO] [stdout] 223 | std::mem::replace(&mut self.contained, contained); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 223 | let _ = std::mem::replace(&mut self.contained, contained); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.03s [INFO] running `Command { std: "docker" "inspect" "2d79f079e3292acee1e93bcb66cd8fccf517980a017c1cf9f999296cc6af87b6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2d79f079e3292acee1e93bcb66cd8fccf517980a017c1cf9f999296cc6af87b6", kill_on_drop: false }` [INFO] [stdout] 2d79f079e3292acee1e93bcb66cd8fccf517980a017c1cf9f999296cc6af87b6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 16722a7c9cc00720a912e2b85dacaf38cc5e52095c4185dcbed04323ea87fe57 [INFO] running `Command { std: "docker" "start" "-a" "16722a7c9cc00720a912e2b85dacaf38cc5e52095c4185dcbed04323ea87fe57", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling rayon-core v1.13.0 [INFO] [stderr] Compiling csv-core v0.1.12 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling half v1.8.3 [INFO] [stderr] Compiling criterion-plot v0.4.5 [INFO] [stderr] Compiling getrandom v0.1.16 [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:222:17 [INFO] [stdout] | [INFO] [stdout] 222 | std::mem::replace(&mut self.intervals, intervals); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [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] 222 | let _ = std::mem::replace(&mut self.intervals, intervals); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:223:17 [INFO] [stdout] | [INFO] [stdout] 223 | std::mem::replace(&mut self.contained, contained); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 223 | let _ = std::mem::replace(&mut self.contained, contained); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling clap v2.34.0 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Compiling rayon v1.11.0 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling serde_cbor v0.11.2 [INFO] [stderr] Compiling csv v1.3.1 [INFO] [stderr] Compiling tinytemplate v1.2.1 [INFO] [stderr] Compiling criterion v0.3.6 [INFO] [stderr] Compiling nclist v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:222:17 [INFO] [stdout] | [INFO] [stdout] 222 | std::mem::replace(&mut self.intervals, intervals); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [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] 222 | let _ = std::mem::replace(&mut self.intervals, intervals); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:223:17 [INFO] [stdout] | [INFO] [stdout] 223 | std::mem::replace(&mut self.contained, contained); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 223 | let _ = std::mem::replace(&mut self.contained, contained); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 8.68s [INFO] running `Command { std: "docker" "inspect" "16722a7c9cc00720a912e2b85dacaf38cc5e52095c4185dcbed04323ea87fe57", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "16722a7c9cc00720a912e2b85dacaf38cc5e52095c4185dcbed04323ea87fe57", kill_on_drop: false }` [INFO] [stdout] 16722a7c9cc00720a912e2b85dacaf38cc5e52095c4185dcbed04323ea87fe57