[INFO] fetching crate superstruct 0.2.0...
[INFO] checking superstruct-0.2.0 against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] extracting crate superstruct 0.2.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate superstruct 0.2.0 on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate superstruct 0.2.0
[INFO] finished tweaking crates.io crate superstruct 0.2.0
[INFO] tweaked toml for crates.io crate superstruct 0.2.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", 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] ea3c33fd55e50dbc65df14859bd96b31e66a16a4f401c9eefdcd120d3e23a9af
[INFO] running `Command { std: "docker" "start" "-a" "ea3c33fd55e50dbc65df14859bd96b31e66a16a4f401c9eefdcd120d3e23a9af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea3c33fd55e50dbc65df14859bd96b31e66a16a4f401c9eefdcd120d3e23a9af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea3c33fd55e50dbc65df14859bd96b31e66a16a4f401c9eefdcd120d3e23a9af", kill_on_drop: false }`
[INFO] [stdout] ea3c33fd55e50dbc65df14859bd96b31e66a16a4f401c9eefdcd120d3e23a9af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f778d9376f7edb56a1628d8de14612e0aae56039a665cf7e8697e0c775b991f
[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" "4f778d9376f7edb56a1628d8de14612e0aae56039a665cf7e8697e0c775b991f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking proc-macro2 v1.0.27
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling darling_macro v0.12.4
[INFO] [stderr]     Checking darling v0.12.4
[INFO] [stderr]     Checking superstruct v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> tests/basic.rs:76:7
[INFO] [stdout]    |
[INFO] [stdout] 76 |     #[serde(untagged)]
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 77 |     #[derive(Debug, Deserialize, PartialEq)]
[INFO] [stdout]    |                     ----------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` 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 a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.42s
[INFO] running `Command { std: "docker" "inspect" "4f778d9376f7edb56a1628d8de14612e0aae56039a665cf7e8697e0c775b991f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f778d9376f7edb56a1628d8de14612e0aae56039a665cf7e8697e0c775b991f", kill_on_drop: false }`
[INFO] [stdout] 4f778d9376f7edb56a1628d8de14612e0aae56039a665cf7e8697e0c775b991f