[INFO] fetching crate smolscale 0.3.29...
[INFO] checking smolscale-0.3.29 against master#0d56e340472882fa673d4b98d0802b9a799879d0 for pr-101692
[INFO] extracting crate smolscale 0.3.29 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate smolscale 0.3.29 on toolchain 0d56e340472882fa673d4b98d0802b9a799879d0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate smolscale 0.3.29
[INFO] finished tweaking crates.io crate smolscale 0.3.29
[INFO] tweaked toml for crates.io crate smolscale 0.3.29 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate smolscale 0.3.29 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smallvec v1.8.1
[INFO] [stderr]   Downloaded futures-micro v0.3.1
[INFO] [stderr]   Downloaded async-oneshot v0.4.2
[INFO] [stderr]   Downloaded rtrb v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c4dff4cff9ba5d52e85f10ae0d556837795811cd7f2400669c63c14049c5891
[INFO] running `Command { std: "docker" "start" "-a" "0c4dff4cff9ba5d52e85f10ae0d556837795811cd7f2400669c63c14049c5891", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c4dff4cff9ba5d52e85f10ae0d556837795811cd7f2400669c63c14049c5891", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c4dff4cff9ba5d52e85f10ae0d556837795811cd7f2400669c63c14049c5891", kill_on_drop: false }`
[INFO] [stdout] 0c4dff4cff9ba5d52e85f10ae0d556837795811cd7f2400669c63c14049c5891
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35c7127cbf02a3b01c7c3d5e987b99678d5b98c79cdaad939487aff7def85058
[INFO] running `Command { std: "docker" "start" "-a" "35c7127cbf02a3b01c7c3d5e987b99678d5b98c79cdaad939487aff7def85058", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling crossbeam-utils v0.8.10
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]    Compiling semver v1.0.10
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking waker-fn v1.1.0
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[INFO] [stderr]    Compiling rayon-core v1.9.3
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[INFO] [stderr]     Checking ryu v1.0.10
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[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.13
[INFO] [stderr]     Checking smolscale v0.3.29 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Instant`
[INFO] [stdout]   --> src/lib.rs:58:22
[INFO] [stdout]    |
[INFO] [stdout] 58 |     time::{Duration, Instant},
[INFO] [stdout]    |                      ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] warning: unused import: `Instant`
[INFO] [stdout]   --> src/lib.rs:58:22
[INFO] [stdout]    |
[INFO] [stdout] 58 |     time::{Duration, Instant},
[INFO] [stdout]    |                      ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tasks`
[INFO] [stdout]    --> benches/my_benchmark.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |     let tasks = (0..NUM_TASKS)
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_tasks`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> benches/my_benchmark.rs:129:15
[INFO] [stdout]     |
[INFO] [stdout] 129 |         .map(|i| {
[INFO] [stdout]     |               ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctr`
[INFO] [stdout]    --> benches/my_benchmark.rs:132:21
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 for ctr in 0.. {
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_ctr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.94s
[INFO] running `Command { std: "docker" "inspect" "35c7127cbf02a3b01c7c3d5e987b99678d5b98c79cdaad939487aff7def85058", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35c7127cbf02a3b01c7c3d5e987b99678d5b98c79cdaad939487aff7def85058", kill_on_drop: false }`
[INFO] [stdout] 35c7127cbf02a3b01c7c3d5e987b99678d5b98c79cdaad939487aff7def85058