[INFO] fetching crate bench-rs 0.2.4...
[INFO] checking bench-rs-0.2.4 against master#a9e7b30487235621751cc628f170c0f15fb215c4 for pr-136539
[INFO] extracting crate bench-rs 0.2.4 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate bench-rs 0.2.4 on toolchain a9e7b30487235621751cc628f170c0f15fb215c4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bench-rs 0.2.4
[INFO] finished tweaking crates.io crate bench-rs 0.2.4
[INFO] tweaked toml for crates.io crate bench-rs 0.2.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 149 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.12.3 (available: v0.22.1)
[INFO] [stderr]       Adding pin-project v0.4.30 (available: v1.1.9)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.0)
[INFO] [stderr]       Adding smol v1.3.0 (available: v2.0.2)
[INFO] [stderr]       Adding tokio v0.2.25 (available: v1.43.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rcnb-rs v0.1.0
[INFO] [stderr]   Downloaded bunt v0.2.8
[INFO] [stderr]   Downloaded bencher-macro v0.1.1
[INFO] [stderr]   Downloaded bunt-macros v0.2.8
[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_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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0dd20bd56ed8d1bac7c610b4ffd452614c42abe8d6d85d18e9637964c570314c
[INFO] running `Command { std: "docker" "start" "-a" "0dd20bd56ed8d1bac7c610b4ffd452614c42abe8d6d85d18e9637964c570314c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0dd20bd56ed8d1bac7c610b4ffd452614c42abe8d6d85d18e9637964c570314c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dd20bd56ed8d1bac7c610b4ffd452614c42abe8d6d85d18e9637964c570314c", kill_on_drop: false }`
[INFO] [stdout] 0dd20bd56ed8d1bac7c610b4ffd452614c42abe8d6d85d18e9637964c570314c
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5623ae8f02d103306e50c7ce27c35e559c454076caae07d74c1a12b9e5c5b4be
[INFO] running `Command { std: "docker" "start" "-a" "5623ae8f02d103306e50c7ce27c35e559c454076caae07d74c1a12b9e5c5b4be", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking parking v2.2.1
[INFO] [stderr]     Checking futures-io v0.3.31
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking fastrand v2.3.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]     Checking futures-lite v2.6.0
[INFO] [stderr]     Checking concurrent-queue v2.5.0
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking event-listener v5.4.0
[INFO] [stderr]     Checking tracing-core v0.1.33
[INFO] [stderr]     Checking linux-raw-sys v0.4.15
[INFO] [stderr]     Checking event-listener-strategy v0.5.3
[INFO] [stderr]     Checking bitflags v2.8.0
[INFO] [stderr]     Checking value-bag v1.10.0
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking log v0.4.25
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking async-task v4.7.1
[INFO] [stderr]     Checking piper v0.2.4
[INFO] [stderr]     Checking async-channel v2.3.1
[INFO] [stderr]     Checking async-lock v3.4.0
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]    Compiling rustix v0.37.28
[INFO] [stderr]     Checking waker-fn v1.2.0
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking blocking v1.6.1
[INFO] [stderr]     Checking async-lock v2.8.0
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.30
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking async-executor v1.13.1
[INFO] [stderr]    Compiling litrs v0.2.3
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking event-listener v3.1.0
[INFO] [stderr]     Checking once_cell v1.20.3
[INFO] [stderr]    Compiling bunt-macros v0.2.8
[INFO] [stderr]     Checking rust-fuzzy-search v0.1.1
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking pin-project-lite v0.1.12
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[INFO] [stderr]     Checking futures-timer v3.0.3
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking bunt v0.2.8
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]     Checking async-net v1.8.0
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]     Checking pin-project v0.4.30
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling bencher-macro v0.1.1
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]     Checking polling v3.7.4
[INFO] [stderr]     Checking async-io v2.4.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking async-signal v0.2.10
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking async-process v1.8.1
[INFO] [stderr]     Checking async-std v1.13.0
[INFO] [stderr]     Checking smol v1.3.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking argh_shared v0.1.13
[INFO] [stderr]     Checking bench-rs v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `output` is never read
[INFO] [stdout]  --> src/timing_future.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct TimingResult<T> {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 9 |     pub output: T,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling argh_derive v0.1.13
[INFO] [stderr]     Checking argh v0.1.13
[INFO] [stderr]     Checking rcnb-rs v0.1.0
[INFO] [stdout] warning: field `output` is never read
[INFO] [stdout]  --> src/timing_future.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct TimingResult<T> {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 9 |     pub output: T,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 52.26s
[INFO] running `Command { std: "docker" "inspect" "5623ae8f02d103306e50c7ce27c35e559c454076caae07d74c1a12b9e5c5b4be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5623ae8f02d103306e50c7ce27c35e559c454076caae07d74c1a12b9e5c5b4be", kill_on_drop: false }`
[INFO] [stdout] 5623ae8f02d103306e50c7ce27c35e559c454076caae07d74c1a12b9e5c5b4be