[INFO] fetching crate webdriver_client 0.2.5...
[INFO] checking webdriver_client-0.2.5 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate webdriver_client 0.2.5 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate webdriver_client 0.2.5 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate webdriver_client 0.2.5
[INFO] finished tweaking crates.io crate webdriver_client 0.2.5
[INFO] tweaked toml for crates.io crate webdriver_client 0.2.5 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate webdriver_client 0.2.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded time v0.1.42
[INFO] [stderr]   Downloaded redox_syscall v0.1.56
[INFO] [stderr]   Downloaded rand v0.3.23
[INFO] [stderr]   Downloaded encode_unicode v0.1.3
[INFO] [stderr]   Downloaded num-traits v0.2.11
[INFO] [stderr]   Downloaded url v1.7.2
[INFO] [stderr]   Downloaded rand_core v0.4.2
[INFO] [stderr]   Downloaded rand v0.4.6
[INFO] [stderr]   Downloaded rand_core v0.3.1
[INFO] [stderr]   Downloaded fuchsia-cprng v0.1.1
[INFO] [stderr]   Downloaded libc v0.2.66
[INFO] [stderr]   Downloaded percent-encoding v1.0.1
[INFO] [stderr]   Downloaded unicase v1.4.2
[INFO] [stderr]   Downloaded traitobject v0.1.0
[INFO] [stderr]   Downloaded unicode-normalization v0.1.12
[INFO] [stderr]   Downloaded language-tags v0.2.2
[INFO] [stderr]   Downloaded quote v0.3.15
[INFO] [stderr]   Downloaded derive_builder_core v0.2.0
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded base64 v0.12.0
[INFO] [stderr]   Downloaded regex v0.2.11
[INFO] [stderr]   Downloaded unicode-xid v0.2.0
[INFO] [stderr]   Downloaded unicode-width v0.1.7
[INFO] [stderr]   Downloaded rustyline v1.0.0
[INFO] [stderr]   Downloaded hyper v0.10.16
[INFO] [stderr]   Downloaded nix v0.5.1
[INFO] [stderr]   Downloaded unicode-xid v0.0.4
[INFO] [stderr]   Downloaded bitflags v0.4.0
[INFO] [stderr]   Downloaded memchr v2.3.0
[INFO] [stderr]   Downloaded version_check v0.1.5
[INFO] [stderr]   Downloaded aho-corasick v0.6.10
[INFO] [stderr]   Downloaded itoa v0.4.5
[INFO] [stderr]   Downloaded winapi v0.3.8
[INFO] [stderr]   Downloaded termcolor v0.3.6
[INFO] [stderr]   Downloaded thread_local v0.3.6
[INFO] [stderr]   Downloaded idna v0.1.5
[INFO] [stderr]   Downloaded clap v2.33.0
[INFO] [stderr]   Downloaded winapi v0.2.8
[INFO] [stderr]   Downloaded kernel32-sys v0.2.2
[INFO] [stderr]   Downloaded matches v0.1.8
[INFO] [stderr]   Downloaded winapi-build v0.1.1
[INFO] [stderr]   Downloaded serde_derive v1.0.104
[INFO] [stderr]   Downloaded proc-macro2 v1.0.8
[INFO] [stderr]   Downloaded syn v1.0.14
[INFO] [stderr]   Downloaded serde_json v1.0.45
[INFO] [stderr]   Downloaded quote v1.0.2
[INFO] [stderr]   Downloaded num-integer v0.1.42
[INFO] [stderr]   Downloaded rdrand v0.4.0
[INFO] [stderr]   Downloaded synom v0.11.3
[INFO] [stderr]   Downloaded derive_builder v0.5.1
[INFO] [stderr]   Downloaded ucd-util v0.1.7
[INFO] [stderr]   Downloaded syn v0.11.11
[INFO] [stderr]   Downloaded regex-syntax v0.5.6
[INFO] [stderr]   Downloaded utf8-ranges v1.0.4
[INFO] [stderr]   Downloaded env_logger v0.4.3
[INFO] [stderr]   Downloaded byteorder v1.3.2
[INFO] [stderr]   Downloaded safemem v0.3.3
[INFO] [stderr]   Downloaded base64 v0.9.3
[INFO] [stderr]   Downloaded httparse v1.3.4
[INFO] [stderr]   Downloaded hermit-abi v0.1.6
[INFO] [stderr]   Downloaded mime v0.2.6
[INFO] [stderr]   Downloaded num_cpus v1.12.0
[INFO] [stderr]   Downloaded log v0.3.8
[INFO] [stderr]   Downloaded typeable v0.1.2
[INFO] [stderr]   Downloaded smallvec v1.1.0
[INFO] [stderr]   Downloaded unicode-bidi v0.3.4
[INFO] [stderr]   Downloaded serde v1.0.104
[INFO] [stderr]   Downloaded chrono v0.4.10
[INFO] [stderr]   Downloaded autocfg v1.0.0
[INFO] [stderr]   Downloaded wincolor v0.1.6
[INFO] [stderr]   Downloaded ryu v1.0.2
[INFO] [stderr]   Downloaded stderrlog v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41ca37204e42d344b1fed014264b905c59600bc12dbe9cc7d89ca9ddc719b3c0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "41ca37204e42d344b1fed014264b905c59600bc12dbe9cc7d89ca9ddc719b3c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41ca37204e42d344b1fed014264b905c59600bc12dbe9cc7d89ca9ddc719b3c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41ca37204e42d344b1fed014264b905c59600bc12dbe9cc7d89ca9ddc719b3c0", kill_on_drop: false }`
[INFO] [stdout] 41ca37204e42d344b1fed014264b905c59600bc12dbe9cc7d89ca9ddc719b3c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7006ce71b7ea815f8f6c02a044763d5a6990536077126c70bc76152bd436ce23
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7006ce71b7ea815f8f6c02a044763d5a6990536077126c70bc76152bd436ce23", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking smallvec v1.1.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking ucd-util v0.1.7
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking base64 v0.12.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling derive_builder_core v0.2.0
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking stderrlog v0.2.4
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking serde_json v1.0.45
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking webdriver_client v0.2.5 (/opt/rustwide/workdir)
[INFO] [stdout] error: unnecessary trailing semicolon
[INFO] [stdout]    --> src/messages.rs:166:33
[INFO] [stdout]     |
[INFO] [stdout] 166 |         enum Field { Reference };
[INFO] [stdout]     |                                 ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:1:9
[INFO] [stdout]     |
[INFO] [stdout] 1   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(redundant_semicolons)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary trailing semicolon
[INFO] [stdout]    --> src/messages.rs:166:33
[INFO] [stdout]     |
[INFO] [stdout] 166 |         enum Field { Reference };
[INFO] [stdout]     |                                 ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:1:9
[INFO] [stdout]     |
[INFO] [stdout] 1   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(redundant_semicolons)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `webdriver_client`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7006ce71b7ea815f8f6c02a044763d5a6990536077126c70bc76152bd436ce23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7006ce71b7ea815f8f6c02a044763d5a6990536077126c70bc76152bd436ce23", kill_on_drop: false }`
[INFO] [stdout] 7006ce71b7ea815f8f6c02a044763d5a6990536077126c70bc76152bd436ce23