[INFO] fetching crate slog-struct-diff 0.1.0...
[INFO] checking slog-struct-diff-0.1.0 against master#de32266a1780aa4ef748ce7f6200a1554fad0aca for pr-75585
[INFO] extracting crate slog-struct-diff 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate slog-struct-diff 0.1.0 on toolchain de32266a1780aa4ef748ce7f6200a1554fad0aca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slog-struct-diff 0.1.0
[INFO] finished tweaking crates.io crate slog-struct-diff 0.1.0
[INFO] tweaked toml for crates.io crate slog-struct-diff 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb6d08c1498757d43e5ad85fb75390ae4bbe5daebdbb89b609b63e554ec194f5
[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" "bb6d08c1498757d43e5ad85fb75390ae4bbe5daebdbb89b609b63e554ec194f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb6d08c1498757d43e5ad85fb75390ae4bbe5daebdbb89b609b63e554ec194f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb6d08c1498757d43e5ad85fb75390ae4bbe5daebdbb89b609b63e554ec194f5", kill_on_drop: false }`
[INFO] [stdout] bb6d08c1498757d43e5ad85fb75390ae4bbe5daebdbb89b609b63e554ec194f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dc54317218d22f6f4a6a3a42d464a0856631ef6afed3216a4ae0e74561593743
[INFO] running `Command { std: "docker" "start" "-a" "dc54317218d22f6f4a6a3a42d464a0856631ef6afed3216a4ae0e74561593743", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking struct-diff v0.2.3
[INFO] [stderr]     Checking slog-struct-diff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Diff`
[INFO] [stdout]  --> src/lib.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | use struct_diff::{Diff, Difference};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |         serializer: &mut Serializer,
[INFO] [stdout]    |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[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/lib.rs:28:26
[INFO] [stdout]    |
[INFO] [stdout] 28 |         serializer: &mut Serializer,
[INFO] [stdout]    |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Diff`
[INFO] [stdout]  --> src/lib.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | use struct_diff::{Diff, Difference};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |         serializer: &mut Serializer,
[INFO] [stdout]    |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[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/lib.rs:28:26
[INFO] [stdout]    |
[INFO] [stdout] 28 |         serializer: &mut Serializer,
[INFO] [stdout]    |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.60s
[INFO] running `Command { std: "docker" "inspect" "dc54317218d22f6f4a6a3a42d464a0856631ef6afed3216a4ae0e74561593743", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc54317218d22f6f4a6a3a42d464a0856631ef6afed3216a4ae0e74561593743", kill_on_drop: false }`
[INFO] [stdout] dc54317218d22f6f4a6a3a42d464a0856631ef6afed3216a4ae0e74561593743