[INFO] fetching crate serde_fs 0.2.0...
[INFO] checking serde_fs-0.2.0 against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] extracting crate serde_fs 0.2.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate serde_fs 0.2.0 on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_fs 0.2.0
[INFO] finished tweaking crates.io crate serde_fs 0.2.0
[INFO] tweaked toml for crates.io crate serde_fs 0.2.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0da804bbfd2c1d8dac98b8118dffde9eae6179677f70c2b81861da440735b7ca
[INFO] running `Command { std: "docker" "start" "-a" "0da804bbfd2c1d8dac98b8118dffde9eae6179677f70c2b81861da440735b7ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0da804bbfd2c1d8dac98b8118dffde9eae6179677f70c2b81861da440735b7ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0da804bbfd2c1d8dac98b8118dffde9eae6179677f70c2b81861da440735b7ca", kill_on_drop: false }`
[INFO] [stdout] 0da804bbfd2c1d8dac98b8118dffde9eae6179677f70c2b81861da440735b7ca
[INFO] running `Command { std: "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" "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" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb094014800a59543ea315a036ccc9e765e5e864619b37c127b90b7933dd27ed
[INFO] running `Command { std: "docker" "start" "-a" "fb094014800a59543ea315a036ccc9e765e5e864619b37c127b90b7933dd27ed", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling case v0.1.0
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling derive-error v0.0.5
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking serde_bytes v0.10.5
[INFO] [stderr]     Checking serde_fs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/de.rs:323:14
[INFO] [stdout]     |
[INFO] [stdout] 323 |     dir: Box<Iterator<Item = Result<String, io::Error>>>,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String, io::Error>>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/de.rs:323:14
[INFO] [stdout]     |
[INFO] [stdout] 323 |     dir: Box<Iterator<Item = Result<String, io::Error>>>,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String, io::Error>>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.58s
[INFO] running `Command { std: "docker" "inspect" "fb094014800a59543ea315a036ccc9e765e5e864619b37c127b90b7933dd27ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb094014800a59543ea315a036ccc9e765e5e864619b37c127b90b7933dd27ed", kill_on_drop: false }`
[INFO] [stdout] fb094014800a59543ea315a036ccc9e765e5e864619b37c127b90b7933dd27ed