[INFO] fetching crate serenium 0.1.0...
[INFO] checking serenium-0.1.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate serenium 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate serenium 0.1.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serenium 0.1.0
[INFO] finished tweaking crates.io crate serenium 0.1.0
[INFO] tweaked toml for crates.io crate serenium 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6347c5d1f4a1d49db9c9f6a10e01b8cd0c34802d499457b0d5f08d32db8d8e26
[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" "6347c5d1f4a1d49db9c9f6a10e01b8cd0c34802d499457b0d5f08d32db8d8e26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6347c5d1f4a1d49db9c9f6a10e01b8cd0c34802d499457b0d5f08d32db8d8e26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6347c5d1f4a1d49db9c9f6a10e01b8cd0c34802d499457b0d5f08d32db8d8e26", kill_on_drop: false }`
[INFO] [stdout] 6347c5d1f4a1d49db9c9f6a10e01b8cd0c34802d499457b0d5f08d32db8d8e26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80a7f19b1cb3e902f0f326fb2a964a7eb087e8407622490a52d5e23979a07dd5
[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" "80a7f19b1cb3e902f0f326fb2a964a7eb087e8407622490a52d5e23979a07dd5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.33
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling native-tls v0.2.7
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[INFO] [stderr]     Checking mime v0.3.16
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[INFO] [stderr]     Checking base64 v0.10.1
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[INFO] [stderr]     Checking rand_xorshift v0.1.1
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[INFO] [stderr]    Compiling rand_chacha v0.1.1
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[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling hyper v0.12.36
[INFO] [stderr]    Compiling openssl-sys v0.9.61
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
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[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking http v0.1.21
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[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]     Checking serenium v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/session.rs:37:117
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn new_session<'b>(server_address: &str, browser_capabilities: &'b Capabilities) -> Result<Session<'b>, Box<Error>> {
[INFO] [stdout]    |                                                                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/session.rs:59:74
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn set_timeouts(&mut self, timeouts: &Timeout) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/session.rs:37:117
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn new_session<'b>(server_address: &str, browser_capabilities: &'b Capabilities) -> Result<Session<'b>, Box<Error>> {
[INFO] [stdout]    |                                                                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/session.rs:59:74
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn set_timeouts(&mut self, timeouts: &Timeout) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/session.rs:72:53
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn current_url(&self) -> Result<String, Box<Error>> {
[INFO] [stdout]    |                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/session.rs:93:55
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn navigate(&self,url: &str) -> Result<(),Box<Error>> {
[INFO] [stdout]    |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/session.rs:111:44
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn refresh(&self) -> Result<(),Box<Error>> {
[INFO] [stdout]     |                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/session.rs:121:50
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn navigate_back(&self) -> Result<(),Box<Error>> {
[INFO] [stdout]     |                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/errors.rs:6:26
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub side: Option<Box<Error>>
[INFO] [stdout]   |                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/session.rs:72:53
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn current_url(&self) -> Result<String, Box<Error>> {
[INFO] [stdout]    |                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/session.rs:93:55
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn navigate(&self,url: &str) -> Result<(),Box<Error>> {
[INFO] [stdout]    |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/session.rs:111:44
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn refresh(&self) -> Result<(),Box<Error>> {
[INFO] [stdout]     |                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/session.rs:121:50
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn navigate_back(&self) -> Result<(),Box<Error>> {
[INFO] [stdout]     |                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tests.rs:18:50
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn test_set_session_timeouts() -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tests.rs:31:45
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn test_get_current_url() -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tests.rs:39:45
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn test_navigate_to_url() -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tests.rs:47:40
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn test_navigation() -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tests.rs:58:36
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn test_refresh() -> Result<(),Box<Error>> {
[INFO] [stdout]    |                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tests.rs:65:42
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn test_navigate_back() -> Result<(),Box<Error>> {
[INFO] [stdout]    |                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/errors.rs:6:26
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub side: Option<Box<Error>>
[INFO] [stdout]   |                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/session.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         reqwest::Client::new().delete(request_url.as_str()).send();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/session.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         reqwest::Client::new().delete(request_url.as_str()).send();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `Command { std: "docker" "inspect" "80a7f19b1cb3e902f0f326fb2a964a7eb087e8407622490a52d5e23979a07dd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80a7f19b1cb3e902f0f326fb2a964a7eb087e8407622490a52d5e23979a07dd5", kill_on_drop: false }`
[INFO] [stdout] 80a7f19b1cb3e902f0f326fb2a964a7eb087e8407622490a52d5e23979a07dd5