[INFO] fetching crate simple-test-bbarekas 0.1.3...
[INFO] checking simple-test-bbarekas-0.1.3 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate simple-test-bbarekas 0.1.3 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate simple-test-bbarekas 0.1.3 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple-test-bbarekas 0.1.3
[INFO] finished tweaking crates.io crate simple-test-bbarekas 0.1.3
[INFO] tweaked toml for crates.io crate simple-test-bbarekas 0.1.3 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate simple-test-bbarekas 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 798464685b829b5419a719cbf71fb688474adc585544c1b4b46d82e6d48270ce
[INFO] running `Command { std: "docker" "start" "-a" "798464685b829b5419a719cbf71fb688474adc585544c1b4b46d82e6d48270ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "798464685b829b5419a719cbf71fb688474adc585544c1b4b46d82e6d48270ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "798464685b829b5419a719cbf71fb688474adc585544c1b4b46d82e6d48270ce", kill_on_drop: false }`
[INFO] [stdout] 798464685b829b5419a719cbf71fb688474adc585544c1b4b46d82e6d48270ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e0f39f473d3642e73055aa3c1dbcfc2f02a34ab927a57350aa368fe34370549
[INFO] running `Command { std: "docker" "start" "-a" "2e0f39f473d3642e73055aa3c1dbcfc2f02a34ab927a57350aa368fe34370549", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking humantime v2.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking env_logger v0.8.1
[INFO] [stderr]     Checking simple-test-bbarekas v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/request.rs:122:25
[INFO] [stdout]     |
[INFO] [stdout] 122 |                         &buf[..min].copy_from_slice(&self.content[..min]);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 122 |                         let _ = &buf[..min].copy_from_slice(&self.content[..min]);
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/request.rs:127:25
[INFO] [stdout]     |
[INFO] [stdout] 127 | /                         &buf[..min]
[INFO] [stdout] 128 | |                             .copy_from_slice(&self.content[self.bytes_read..self.bytes_read + min]);
[INFO] [stdout]     | |___________________________________________________________________________________________________^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 127 |                         let _ = &buf[..min]
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.52s
[INFO] running `Command { std: "docker" "inspect" "2e0f39f473d3642e73055aa3c1dbcfc2f02a34ab927a57350aa368fe34370549", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e0f39f473d3642e73055aa3c1dbcfc2f02a34ab927a57350aa368fe34370549", kill_on_drop: false }`
[INFO] [stdout] 2e0f39f473d3642e73055aa3c1dbcfc2f02a34ab927a57350aa368fe34370549