[INFO] fetching crate unlink 0.0.0-pre-release3.1...
[INFO] checking unlink-0.0.0-pre-release3.1 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate unlink 0.0.0-pre-release3.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate unlink 0.0.0-pre-release3.1
[INFO] finished tweaking crates.io crate unlink 0.0.0-pre-release3.1
[INFO] tweaked toml for crates.io crate unlink 0.0.0-pre-release3.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unlink 0.0.0-pre-release3.1 on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 47 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18a1635912875c81d18aa0398f5730edc398a6e7edfdb5401f7a887c538436bf
[INFO] running `Command { std: "docker" "start" "-a" "18a1635912875c81d18aa0398f5730edc398a6e7edfdb5401f7a887c538436bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18a1635912875c81d18aa0398f5730edc398a6e7edfdb5401f7a887c538436bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18a1635912875c81d18aa0398f5730edc398a6e7edfdb5401f7a887c538436bf", kill_on_drop: false }`
[INFO] [stdout] 18a1635912875c81d18aa0398f5730edc398a6e7edfdb5401f7a887c538436bf
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19bd8c0fe9503651974101ada7a928873b4fc5c547c243b36355f93e2c585c84
[INFO] running `Command { std: "docker" "start" "-a" "19bd8c0fe9503651974101ada7a928873b4fc5c547c243b36355f93e2c585c84", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]     Checking owned-alloc v0.2.0
[INFO] [stderr]     Checking haphazard v0.1.8
[INFO] [stderr]     Checking lockfree v0.5.1
[INFO] [stderr]     Checking unlink v0.0.0-pre-release3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]    --> src/base.rs:325:9
[INFO] [stdout]     |
[INFO] [stdout] 325 |     use std::thread;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CountOnDrop` is never constructed
[INFO] [stdout]    --> src/base.rs:328:12
[INFO] [stdout]     |
[INFO] [stdout] 328 |     struct CountOnDrop<V> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.6
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]    --> src/base.rs:325:9
[INFO] [stdout]     |
[INFO] [stdout] 325 |     use std::thread;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.57s
[INFO] running `Command { std: "docker" "inspect" "19bd8c0fe9503651974101ada7a928873b4fc5c547c243b36355f93e2c585c84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19bd8c0fe9503651974101ada7a928873b4fc5c547c243b36355f93e2c585c84", kill_on_drop: false }`
[INFO] [stdout] 19bd8c0fe9503651974101ada7a928873b4fc5c547c243b36355f93e2c585c84
