[INFO] fetching crate from_remote_derive 0.2.2...
[INFO] checking from_remote_derive-0.2.2 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate from_remote_derive 0.2.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate from_remote_derive 0.2.2 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate from_remote_derive 0.2.2
[INFO] finished tweaking crates.io crate from_remote_derive 0.2.2
[INFO] tweaked toml for crates.io crate from_remote_derive 0.2.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate from_remote_derive 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c46a971a41a2f20208c0318ed1949cc05a8a3eeaf3001b0f44cd70d4d415114
[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" "2c46a971a41a2f20208c0318ed1949cc05a8a3eeaf3001b0f44cd70d4d415114", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c46a971a41a2f20208c0318ed1949cc05a8a3eeaf3001b0f44cd70d4d415114", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c46a971a41a2f20208c0318ed1949cc05a8a3eeaf3001b0f44cd70d4d415114", kill_on_drop: false }`
[INFO] [stdout] 2c46a971a41a2f20208c0318ed1949cc05a8a3eeaf3001b0f44cd70d4d415114
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 751631a30dd41830dd2b3e6fb5577800efabdbaacf2235583bd53e65ce907b57
[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" "751631a30dd41830dd2b3e6fb5577800efabdbaacf2235583bd53e65ce907b57", kill_on_drop: false }`
[INFO] [stderr]    Compiling from_remote_derive v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `bar`
[INFO] [stdout]  --> examples/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     bar: BTreeMap<u64, u64>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fizz`
[INFO] [stdout]  --> examples/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fizz: Vec<String>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> examples/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         x: u16,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> examples/main.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         y: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A`
[INFO] [stdout]   --> examples/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     A(u64, Option<u64>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B`
[INFO] [stdout]   --> examples/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     B(HashMap<String, Bar>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C`
[INFO] [stdout]   --> examples/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     C(Bar),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D`
[INFO] [stdout]   --> examples/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | /     D {
[INFO] [stdout] 39 | |         x: u16,
[INFO] [stdout] 40 | |         y: u32,
[INFO] [stdout] 41 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "751631a30dd41830dd2b3e6fb5577800efabdbaacf2235583bd53e65ce907b57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "751631a30dd41830dd2b3e6fb5577800efabdbaacf2235583bd53e65ce907b57", kill_on_drop: false }`
[INFO] [stdout] 751631a30dd41830dd2b3e6fb5577800efabdbaacf2235583bd53e65ce907b57