[INFO] fetching crate tinkerforge 2.0.20...
[INFO] checking tinkerforge-2.0.20 against master#5257aee7dd163d21d32fa904578d4fb0f4c91b79 for pr-116494-2
[INFO] extracting crate tinkerforge 2.0.20 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate tinkerforge 2.0.20 on toolchain 5257aee7dd163d21d32fa904578d4fb0f4c91b79
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5257aee7dd163d21d32fa904578d4fb0f4c91b79" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tinkerforge 2.0.20
[INFO] finished tweaking crates.io crate tinkerforge 2.0.20
[INFO] tweaked toml for crates.io crate tinkerforge 2.0.20 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate tinkerforge 2.0.20 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" "+5257aee7dd163d21d32fa904578d4fb0f4c91b79" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking tinkerforge-2.0.20 against try#d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8 for pr-116494-2
[INFO] extracting crate tinkerforge 2.0.20 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate tinkerforge 2.0.20 on toolchain d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tinkerforge 2.0.20
[INFO] finished tweaking crates.io crate tinkerforge 2.0.20
[INFO] tweaked toml for crates.io crate tinkerforge 2.0.20 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate tinkerforge 2.0.20 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" "+d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking tinkerforge-2.0.20 against try#d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8 for pr-116494-2
[INFO] extracting crate tinkerforge 2.0.20 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate tinkerforge 2.0.20 on toolchain d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tinkerforge 2.0.20
[INFO] finished tweaking crates.io crate tinkerforge 2.0.20
[INFO] tweaked toml for crates.io crate tinkerforge 2.0.20 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate tinkerforge 2.0.20 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" "+d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1dca9e7a732a5ba1de62102ca92fdfd3bdab4adb6a8a91618e56e187dbbdd07
[INFO] running `Command { std: "docker" "start" "-a" "e1dca9e7a732a5ba1de62102ca92fdfd3bdab4adb6a8a91618e56e187dbbdd07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1dca9e7a732a5ba1de62102ca92fdfd3bdab4adb6a8a91618e56e187dbbdd07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1dca9e7a732a5ba1de62102ca92fdfd3bdab4adb6a8a91618e56e187dbbdd07", kill_on_drop: false }`
[INFO] [stdout] e1dca9e7a732a5ba1de62102ca92fdfd3bdab4adb6a8a91618e56e187dbbdd07
[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" "+d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e777a91475909dd16ce61135599c7232e5534cc1be890293bddbbe22c501c03
[INFO] running `Command { std: "docker" "start" "-a" "5e777a91475909dd16ce61135599c7232e5534cc1be890293bddbbe22c501c03", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking cpufeatures v0.2.2
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.11.1
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking hmac v0.11.0
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]     Checking tinkerforge v2.0.20 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Receiver` is imported redundantly
[INFO] [stdout]  --> src/converting_callback_receiver.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     sync::mpsc::{Receiver, *},
[INFO] [stdout]   |                  ^^^^^^^^  - the item `Receiver` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Receiver` is imported redundantly
[INFO] [stdout]   --> src/ip_connection.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |         mpsc::{Receiver, Sender, *},
[INFO] [stdout]    |                ^^^^^^^^          - the item `Receiver` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sender` is imported redundantly
[INFO] [stdout]   --> src/ip_connection.rs:10:26
[INFO] [stdout]    |
[INFO] [stdout] 10 |         mpsc::{Receiver, Sender, *},
[INFO] [stdout]    |                          ^^^^^^  - the item `Sender` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Receiver` is imported redundantly
[INFO] [stdout]  --> src/converting_callback_receiver.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     sync::mpsc::{Receiver, *},
[INFO] [stdout]   |                  ^^^^^^^^  - the item `Receiver` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Receiver` is imported redundantly
[INFO] [stdout]   --> src/ip_connection.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |         mpsc::{Receiver, Sender, *},
[INFO] [stdout]    |                ^^^^^^^^          - the item `Receiver` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sender` is imported redundantly
[INFO] [stdout]   --> src/ip_connection.rs:10:26
[INFO] [stdout]    |
[INFO] [stdout] 10 |         mpsc::{Receiver, Sender, *},
[INFO] [stdout]    |                          ^^^^^^  - the item `Sender` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&IpConnectionRequestSender` instead of cloning the inner type
[INFO] [stdout]    --> src/ip_connection.rs:764:57
[INFO] [stdout]     |
[INFO] [stdout] 764 |     fn get_rs(&self) -> IpConnectionRequestSender { self.clone().to_owned() }
[INFO] [stdout]     |                                                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&IpConnectionRequestSender` instead of cloning the inner type
[INFO] [stdout]    --> src/ip_connection.rs:764:57
[INFO] [stdout]     |
[INFO] [stdout] 764 |     fn get_rs(&self) -> IpConnectionRequestSender { self.clone().to_owned() }
[INFO] [stdout]     |                                                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.21s
[INFO] running `Command { std: "docker" "inspect" "5e777a91475909dd16ce61135599c7232e5534cc1be890293bddbbe22c501c03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e777a91475909dd16ce61135599c7232e5534cc1be890293bddbbe22c501c03", kill_on_drop: false }`
[INFO] [stdout] 5e777a91475909dd16ce61135599c7232e5534cc1be890293bddbbe22c501c03