[INFO] fetching crate blocking 1.5.1...
[INFO] checking blocking-1.5.1 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate blocking 1.5.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate blocking 1.5.1 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blocking 1.5.1
[INFO] finished tweaking crates.io crate blocking 1.5.1
[INFO] tweaked toml for crates.io crate blocking 1.5.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate blocking 1.5.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96bf3602e184cece983665c16c3589c8b6cc1c40ef0b96448af8adb9da2e2ee8
[INFO] running `Command { std: "docker" "start" "-a" "96bf3602e184cece983665c16c3589c8b6cc1c40ef0b96448af8adb9da2e2ee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96bf3602e184cece983665c16c3589c8b6cc1c40ef0b96448af8adb9da2e2ee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96bf3602e184cece983665c16c3589c8b6cc1c40ef0b96448af8adb9da2e2ee8", kill_on_drop: false }`
[INFO] [stdout] 96bf3602e184cece983665c16c3589c8b6cc1c40ef0b96448af8adb9da2e2ee8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5b92a3a5f6037d3959a7225e178c845d57dabaea17853733c5895b750952408
[INFO] running `Command { std: "docker" "start" "-a" "e5b92a3a5f6037d3959a7225e178c845d57dabaea17853733c5895b750952408", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]     Checking futures-io v0.3.29
[INFO] [stderr]     Checking piper v0.2.1
[INFO] [stderr]     Checking futures-lite v2.0.1
[INFO] [stderr]     Checking concurrent-queue v2.3.0
[INFO] [stderr]     Checking event-listener v3.0.1
[INFO] [stderr]     Checking event-listener-strategy v0.3.0
[INFO] [stderr]     Checking async-channel v2.1.0
[INFO] [stderr]     Checking async-lock v3.0.0
[INFO] [stderr]     Checking blocking v1.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `AsyncRead` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:105:18
[INFO] [stdout]     |
[INFO] [stdout] 105 | use futures_io::{AsyncRead, AsyncSeek, AsyncWrite};
[INFO] [stdout]     |                  ^^^^^^^^^
[INFO] [stdout] 106 | use futures_lite::{future, prelude::*, ready};
[INFO] [stdout]     |                            ---------- the item `AsyncRead` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsyncRead` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:105:18
[INFO] [stdout]     |
[INFO] [stdout] 105 | use futures_io::{AsyncRead, AsyncSeek, AsyncWrite};
[INFO] [stdout]     |                  ^^^^^^^^^
[INFO] [stdout] 106 | use futures_lite::{future, prelude::*, ready};
[INFO] [stdout]     |                            ---------- the item `AsyncRead` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsyncSeek` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:105:29
[INFO] [stdout]     |
[INFO] [stdout] 105 | use futures_io::{AsyncRead, AsyncSeek, AsyncWrite};
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout] 106 | use futures_lite::{future, prelude::*, ready};
[INFO] [stdout]     |                            ---------- the item `AsyncSeek` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsyncSeek` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:105:29
[INFO] [stdout]     |
[INFO] [stdout] 105 | use futures_io::{AsyncRead, AsyncSeek, AsyncWrite};
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout] 106 | use futures_lite::{future, prelude::*, ready};
[INFO] [stdout]     |                            ---------- the item `AsyncSeek` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsyncWrite` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:105:40
[INFO] [stdout]     |
[INFO] [stdout] 105 | use futures_io::{AsyncRead, AsyncSeek, AsyncWrite};
[INFO] [stdout]     |                                        ^^^^^^^^^^
[INFO] [stdout] 106 | use futures_lite::{future, prelude::*, ready};
[INFO] [stdout]     |                            ---------- the item `AsyncWrite` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsyncWrite` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:105:40
[INFO] [stdout]     |
[INFO] [stdout] 105 | use futures_io::{AsyncRead, AsyncSeek, AsyncWrite};
[INFO] [stdout]     |                                        ^^^^^^^^^^
[INFO] [stdout] 106 | use futures_lite::{future, prelude::*, ready};
[INFO] [stdout]     |                            ---------- the item `AsyncWrite` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "e5b92a3a5f6037d3959a7225e178c845d57dabaea17853733c5895b750952408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5b92a3a5f6037d3959a7225e178c845d57dabaea17853733c5895b750952408", kill_on_drop: false }`
[INFO] [stdout] e5b92a3a5f6037d3959a7225e178c845d57dabaea17853733c5895b750952408
[INFO] checking blocking-1.5.1 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] extracting crate blocking 1.5.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate blocking 1.5.1 on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blocking 1.5.1
[INFO] finished tweaking crates.io crate blocking 1.5.1
[INFO] tweaked toml for crates.io crate blocking 1.5.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate blocking 1.5.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 772580d8bf99949aa14bbcd99aa6091208d270785ae3a5de928059ba77e943a7
[INFO] running `Command { std: "docker" "start" "-a" "772580d8bf99949aa14bbcd99aa6091208d270785ae3a5de928059ba77e943a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "772580d8bf99949aa14bbcd99aa6091208d270785ae3a5de928059ba77e943a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "772580d8bf99949aa14bbcd99aa6091208d270785ae3a5de928059ba77e943a7", kill_on_drop: false }`
[INFO] [stdout] 772580d8bf99949aa14bbcd99aa6091208d270785ae3a5de928059ba77e943a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e36a82601614a249d5d0d2eb6719a0ae64f14a0661423e741f316cd9203135a2
[INFO] running `Command { std: "docker" "start" "-a" "e36a82601614a249d5d0d2eb6719a0ae64f14a0661423e741f316cd9203135a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]     Checking futures-io v0.3.29
[INFO] [stderr]     Checking piper v0.2.1
[INFO] [stderr]     Checking futures-lite v2.0.1
[INFO] [stderr]     Checking concurrent-queue v2.3.0
[INFO] [stderr]     Checking event-listener v3.0.1
[INFO] [stderr]     Checking event-listener-strategy v0.3.0
[INFO] [stderr]     Checking async-channel v2.1.0
[INFO] [stderr]     Checking async-lock v3.0.0
[INFO] [stderr]     Checking blocking v1.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `AsyncRead` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:105:18
[INFO] [stdout]     |
[INFO] [stdout] 105 | use futures_io::{AsyncRead, AsyncSeek, AsyncWrite};
[INFO] [stdout]     |                  ^^^^^^^^^
[INFO] [stdout] 106 | use futures_lite::{future, prelude::*, ready};
[INFO] [stdout]     |                            ---------- the item `AsyncRead` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsyncSeek` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:105:29
[INFO] [stdout]     |
[INFO] [stdout] 105 | use futures_io::{AsyncRead, AsyncSeek, AsyncWrite};
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout] 106 | use futures_lite::{future, prelude::*, ready};
[INFO] [stdout]     |                            ---------- the item `AsyncSeek` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsyncWrite` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:105:40
[INFO] [stdout]     |
[INFO] [stdout] 105 | use futures_io::{AsyncRead, AsyncSeek, AsyncWrite};
[INFO] [stdout]     |                                        ^^^^^^^^^^
[INFO] [stdout] 106 | use futures_lite::{future, prelude::*, ready};
[INFO] [stdout]     |                            ---------- the item `AsyncWrite` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsyncRead` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:105:18
[INFO] [stdout]     |
[INFO] [stdout] 105 | use futures_io::{AsyncRead, AsyncSeek, AsyncWrite};
[INFO] [stdout]     |                  ^^^^^^^^^
[INFO] [stdout] 106 | use futures_lite::{future, prelude::*, ready};
[INFO] [stdout]     |                            ---------- the item `AsyncRead` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsyncSeek` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:105:29
[INFO] [stdout]     |
[INFO] [stdout] 105 | use futures_io::{AsyncRead, AsyncSeek, AsyncWrite};
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout] 106 | use futures_lite::{future, prelude::*, ready};
[INFO] [stdout]     |                            ---------- the item `AsyncSeek` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsyncWrite` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:105:40
[INFO] [stdout]     |
[INFO] [stdout] 105 | use futures_io::{AsyncRead, AsyncSeek, AsyncWrite};
[INFO] [stdout]     |                                        ^^^^^^^^^^
[INFO] [stdout] 106 | use futures_lite::{future, prelude::*, ready};
[INFO] [stdout]     |                            ---------- the item `AsyncWrite` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "e36a82601614a249d5d0d2eb6719a0ae64f14a0661423e741f316cd9203135a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e36a82601614a249d5d0d2eb6719a0ae64f14a0661423e741f316cd9203135a2", kill_on_drop: false }`
[INFO] [stdout] e36a82601614a249d5d0d2eb6719a0ae64f14a0661423e741f316cd9203135a2
