[INFO] fetching crate lw-webdriver 0.4.1...
[INFO] checking lw-webdriver-0.4.1 against beta for pr-78714
[INFO] extracting crate lw-webdriver 0.4.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate lw-webdriver 0.4.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lw-webdriver 0.4.1
[INFO] finished tweaking crates.io crate lw-webdriver 0.4.1
[INFO] tweaked toml for crates.io crate lw-webdriver 0.4.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d32404163aada1e91222d8bc98be036c8f0dc8882649d0adadbbcde0ea79b624
[INFO] running `Command { std: "docker" "start" "-a" "d32404163aada1e91222d8bc98be036c8f0dc8882649d0adadbbcde0ea79b624", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d32404163aada1e91222d8bc98be036c8f0dc8882649d0adadbbcde0ea79b624", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d32404163aada1e91222d8bc98be036c8f0dc8882649d0adadbbcde0ea79b624", kill_on_drop: false }`
[INFO] [stdout] d32404163aada1e91222d8bc98be036c8f0dc8882649d0adadbbcde0ea79b624
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] af41084bd75ee88d6a365c368dc6b0df388025eee8977ed29fb5678e133c0aff
[INFO] running `Command { std: "docker" "start" "-a" "af41084bd75ee88d6a365c368dc6b0df388025eee8977ed29fb5678e133c0aff", kill_on_drop: false }`
[INFO] [stderr]    Compiling minreq v2.2.1
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking lw-webdriver v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]   --> src/session.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | use log::{debug, info, warn, error};
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::elements::*`
[INFO] [stdout]  --> src/tab.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::elements::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error`, `info`
[INFO] [stdout]  --> src/tab.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | use log::{info, error};
[INFO] [stdout]   |           ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tab::*`
[INFO] [stdout]  --> src/elements.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::tab::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Selector`
[INFO] [stdout]  --> src/elements.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::enums::{Selector, WebdriverObject};
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `debug`, `info`
[INFO] [stdout]  --> src/elements.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log::{debug, info, warn, error};
[INFO] [stdout]   |           ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/http_requests.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use log::{debug, info, warn, error};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]   --> src/session.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | use log::{debug, info, warn, error};
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::elements::*`
[INFO] [stdout]  --> src/tab.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::elements::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error`, `info`
[INFO] [stdout]  --> src/tab.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | use log::{info, error};
[INFO] [stdout]   |           ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tab::*`
[INFO] [stdout]  --> src/elements.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::tab::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Selector`
[INFO] [stdout]  --> src/elements.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::enums::{Selector, WebdriverObject};
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `debug`, `info`
[INFO] [stdout]  --> src/elements.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log::{debug, info, warn, error};
[INFO] [stdout]   |           ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/http_requests.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use log::{debug, info, warn, error};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `json::object`
[INFO] [stdout]  --> tests/tests.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use json::object;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.79s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "af41084bd75ee88d6a365c368dc6b0df388025eee8977ed29fb5678e133c0aff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af41084bd75ee88d6a365c368dc6b0df388025eee8977ed29fb5678e133c0aff", kill_on_drop: false }`
[INFO] [stdout] af41084bd75ee88d6a365c368dc6b0df388025eee8977ed29fb5678e133c0aff