[INFO] crate seed 0.4.0 is already in cache
[INFO] checking seed-0.4.0 against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] extracting crate seed 0.4.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate seed 0.4.0 on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate seed 0.4.0
[INFO] finished tweaking crates.io crate seed 0.4.0
[INFO] tweaked toml for crates.io crate seed 0.4.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+b61e69433951e31f7bd746e22f516a48ad41623b" "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] 6718ce5d7e7c18293e20024b082c860ec61f54ff9ebf1e2c1e2f9c0de3752e97
[INFO] running `"docker" "start" "-a" "6718ce5d7e7c18293e20024b082c860ec61f54ff9ebf1e2c1e2f9c0de3752e97"`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.52
[INFO] [stderr]    Compiling wasm-bindgen v0.2.52
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking enclose v1.1.8
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.50
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.52
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.52
[INFO] [stderr]    Compiling wasm-bindgen-webidl v0.2.52
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.52
[INFO] [stderr]    Compiling web-sys v0.3.29
[INFO] [stderr]     Checking js-sys v0.3.29
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking wasm-bindgen-futures v0.3.27
[INFO] [stderr]     Checking wasm-bindgen-test v0.2.50
[INFO] [stderr]     Checking seed v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/fetch.rs:474:21
[INFO] [stderr]     |
[INFO] [stderr] 474 |                 let mut output_future: Box<
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/fetch.rs:474:21
[INFO] [stderr]     |
[INFO] [stderr] 474 |                 let mut output_future: Box<
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.01s
[INFO] running `"docker" "inspect" "6718ce5d7e7c18293e20024b082c860ec61f54ff9ebf1e2c1e2f9c0de3752e97"`
[INFO] running `"docker" "rm" "-f" "6718ce5d7e7c18293e20024b082c860ec61f54ff9ebf1e2c1e2f9c0de3752e97"`
[INFO] [stdout] 6718ce5d7e7c18293e20024b082c860ec61f54ff9ebf1e2c1e2f9c0de3752e97