[INFO] fetching crate firebase-rs 1.0.3...
[INFO] checking firebase-rs-1.0.3 against master#bd0bacc694d7d8175804bb6f690cb846bfa4a9ee for pr-71665
[INFO] extracting crate firebase-rs 1.0.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate firebase-rs 1.0.3 on toolchain bd0bacc694d7d8175804bb6f690cb846bfa4a9ee
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate firebase-rs 1.0.3
[INFO] finished tweaking crates.io crate firebase-rs 1.0.3
[INFO] tweaked toml for crates.io crate firebase-rs 1.0.3 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "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] 703eb5395b6196756fddd97b7bb46096d63e5626f19f49caee18fa50bcbcca4a
[INFO] running `"docker" "start" "-a" "703eb5395b6196756fddd97b7bb46096d63e5626f19f49caee18fa50bcbcca4a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling serde v1.0.109
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling openssl-sys v0.9.56
[INFO] [stderr]    Compiling curl-sys v0.4.31+curl-7.70.0
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.109
[INFO] [stderr]    Compiling curl v0.4.29
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking firebase-rs v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `res`
[INFO] [stderr]    --> src/lib.rs:284:16
[INFO] [stderr]     |
[INFO] [stderr] 284 |             Ok(res) => {
[INFO] [stderr]     |                ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `res`
[INFO] [stderr]    --> src/lib.rs:284:16
[INFO] [stderr]     |
[INFO] [stderr] 284 |             Ok(res) => {
[INFO] [stderr]     |                ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]    --> src/lib.rs:487:9
[INFO] [stderr]     |
[INFO] [stderr] 487 | /         self.params
[INFO] [stderr] 488 | |             .iter()
[INFO] [stderr] 489 | |             .map(|(k, v)| url.set_query(Some(format!("{}={}", k, v).as_str())))
[INFO] [stderr] 490 | |             .collect::<()>();
[INFO] [stderr]     | |_____________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]    --> src/lib.rs:487:9
[INFO] [stderr]     |
[INFO] [stderr] 487 | /         self.params
[INFO] [stderr] 488 | |             .iter()
[INFO] [stderr] 489 | |             .map(|(k, v)| url.set_query(Some(format!("{}={}", k, v).as_str())))
[INFO] [stderr] 490 | |             .collect::<()>();
[INFO] [stderr]     | |_____________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 59.03s
[INFO] running `"docker" "inspect" "703eb5395b6196756fddd97b7bb46096d63e5626f19f49caee18fa50bcbcca4a"`
[INFO] running `"docker" "rm" "-f" "703eb5395b6196756fddd97b7bb46096d63e5626f19f49caee18fa50bcbcca4a"`
[INFO] [stdout] 703eb5395b6196756fddd97b7bb46096d63e5626f19f49caee18fa50bcbcca4a