[INFO] fetching crate channel_pipes 0.2.0...
[INFO] checking channel_pipes-0.2.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate channel_pipes 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate channel_pipes 0.2.0
[INFO] finished tweaking crates.io crate channel_pipes 0.2.0
[INFO] tweaked toml for crates.io crate channel_pipes 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate channel_pipes 0.2.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 28 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e76620ecc40dac23723386f2c8afb623770858ebc305148a656e08092629c71
[INFO] running `Command { std: "docker" "start" "-a" "8e76620ecc40dac23723386f2c8afb623770858ebc305148a656e08092629c71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e76620ecc40dac23723386f2c8afb623770858ebc305148a656e08092629c71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e76620ecc40dac23723386f2c8afb623770858ebc305148a656e08092629c71", kill_on_drop: false }`
[INFO] [stdout] 8e76620ecc40dac23723386f2c8afb623770858ebc305148a656e08092629c71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efba309a11ee641e5105db1c6bd8e4f429550adb94e1450d691c978343f3aa15
[INFO] running `Command { std: "docker" "start" "-a" "efba309a11ee641e5105db1c6bd8e4f429550adb94e1450d691c978343f3aa15", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]     Checking cfg-if v1.0.1
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking dyn-clone v1.0.19
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]     Checking crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]    Compiling dyn-clonable-impl v0.9.2
[INFO] [stderr]     Checking dyn-clonable v0.9.2
[INFO] [stderr]     Checking channel_pipes v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `IntoPiped` is never used
[INFO] [stdout]   --> src/lib.rs:56:7
[INFO] [stdout]    |
[INFO] [stdout] 56 | trait IntoPiped<T, S, V>
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IdentityPipelineStage` is never constructed
[INFO] [stdout]   --> src/pipeline.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct IdentityPipelineStage<T> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/pipeline.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl<T> IdentityPipelineStage<T> {
[INFO] [stdout]    | -------------------------------- associated function in this implementation
[INFO] [stdout] 47 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.87s
[INFO] running `Command { std: "docker" "inspect" "efba309a11ee641e5105db1c6bd8e4f429550adb94e1450d691c978343f3aa15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efba309a11ee641e5105db1c6bd8e4f429550adb94e1450d691c978343f3aa15", kill_on_drop: false }`
[INFO] [stdout] efba309a11ee641e5105db1c6bd8e4f429550adb94e1450d691c978343f3aa15