[INFO] fetching crate dataflow 0.4.0...
[INFO] checking dataflow-0.4.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate dataflow 0.4.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate dataflow 0.4.0
[INFO] finished tweaking crates.io crate dataflow 0.4.0
[INFO] tweaked toml for crates.io crate dataflow 0.4.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dataflow 0.4.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.9.0 (available: v0.14.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f006f2b8f8802e8b4088e9d7d4a89725057aa1b21ce92dd07492b85efd39265
[INFO] running `Command { std: "docker" "start" "-a" "5f006f2b8f8802e8b4088e9d7d4a89725057aa1b21ce92dd07492b85efd39265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f006f2b8f8802e8b4088e9d7d4a89725057aa1b21ce92dd07492b85efd39265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f006f2b8f8802e8b4088e9d7d4a89725057aa1b21ce92dd07492b85efd39265", kill_on_drop: false }`
[INFO] [stdout] 5f006f2b8f8802e8b4088e9d7d4a89725057aa1b21ce92dd07492b85efd39265
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 246e6600e833e6ddffe935d780d29fb220c0262097aab80ea9b7ae5173d7cb5a
[INFO] running `Command { std: "docker" "start" "-a" "246e6600e833e6ddffe935d780d29fb220c0262097aab80ea9b7ae5173d7cb5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking thread-control v0.1.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking dataflow v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/dataloader/dataloader.rs:77:21
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn iter_len(&mut self) -> LenIterDataloader<T> {
[INFO] [stdout]    |                     ^^^^^^^^^     -------------------- the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn iter_len(&mut self) -> LenIterDataloader<'_, T> {
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.73s
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/dataloader/dataloader.rs:77:21
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn iter_len(&mut self) -> LenIterDataloader<T> {
[INFO] [stdout]    |                     ^^^^^^^^^     -------------------- the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn iter_len(&mut self) -> LenIterDataloader<'_, T> {
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "246e6600e833e6ddffe935d780d29fb220c0262097aab80ea9b7ae5173d7cb5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "246e6600e833e6ddffe935d780d29fb220c0262097aab80ea9b7ae5173d7cb5a", kill_on_drop: false }`
[INFO] [stdout] 246e6600e833e6ddffe935d780d29fb220c0262097aab80ea9b7ae5173d7cb5a