[INFO] updating cached repository https://github.com/hppRC/rust_headless
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9f9a997c9b9347c51da5cb0302b98652e39af58d
[INFO] checking hppRC/rust_headless against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FhppRC%2Frust_headless" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hppRC/rust_headless on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/hppRC/rust_headless
[INFO] finished tweaking git repo https://github.com/hppRC/rust_headless
[INFO] tweaked toml for git repo https://github.com/hppRC/rust_headless written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/hppRC/rust_headless already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a23787a3ea2f0534c16fc0492c999d4ee4184d73ba7509dfe9f81140876362cc
[INFO] running `"docker" "start" "-a" "a23787a3ea2f0534c16fc0492c999d4ee4184d73ba7509dfe9f81140876362cc"`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]     Checking smallvec v1.0.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling derive_builder v0.7.2
[INFO] [stderr]     Checking unicode-normalization v0.1.11
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]    Compiling darling_core v0.9.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]     Checking websocket v0.23.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling darling v0.9.0
[INFO] [stderr]    Compiling derive_builder_core v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking which v2.0.1
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking headless_chrome v0.9.0
[INFO] [stderr]     Checking rust-headless v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `longtime`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let longtime = time::Duration::new(3, 0);
[INFO] [stderr]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_longtime`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 |         io::stdin().read_line(&mut s);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `longtime`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let longtime = time::Duration::new(3, 0);
[INFO] [stderr]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_longtime`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 |         io::stdin().read_line(&mut s);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 39s
[INFO] running `"docker" "inspect" "a23787a3ea2f0534c16fc0492c999d4ee4184d73ba7509dfe9f81140876362cc"`
[INFO] running `"docker" "rm" "-f" "a23787a3ea2f0534c16fc0492c999d4ee4184d73ba7509dfe9f81140876362cc"`
[INFO] [stdout] a23787a3ea2f0534c16fc0492c999d4ee4184d73ba7509dfe9f81140876362cc