[INFO] fetching crate datasize 0.2.15...
[INFO] checking datasize-0.2.15 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate datasize 0.2.15 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate datasize 0.2.15
[INFO] finished tweaking crates.io crate datasize 0.2.15
[INFO] tweaked toml for crates.io crate datasize 0.2.15 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate datasize 0.2.15 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 27 packages to latest compatible versions
[INFO] [stderr]       Adding fake_instant v0.4.0 (available: v0.5.0)
[INFO] [stderr]       Adding tokio v0.2.25 (available: v1.47.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fake_instant v0.4.0
[INFO] [stderr]   Downloaded datasize_derive v0.2.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 030735d3d1351d962d952e42bf7fe5264be0bcc0f4ee30e2879eb67b1d898696
[INFO] running `Command { std: "docker" "start" "-a" "030735d3d1351d962d952e42bf7fe5264be0bcc0f4ee30e2879eb67b1d898696", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "030735d3d1351d962d952e42bf7fe5264be0bcc0f4ee30e2879eb67b1d898696", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "030735d3d1351d962d952e42bf7fe5264be0bcc0f4ee30e2879eb67b1d898696", kill_on_drop: false }`
[INFO] [stdout] 030735d3d1351d962d952e42bf7fe5264be0bcc0f4ee30e2879eb67b1d898696
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22fec2f1263cdb13b8272f5f6b0ef574fcb5fa542d740cabbc465f106ec2e54d
[INFO] running `Command { std: "docker" "start" "-a" "22fec2f1263cdb13b8272f5f6b0ef574fcb5fa542d740cabbc465f106ec2e54d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling datasize_derive v0.2.15
[INFO] [stderr]     Checking datasize v0.2.15 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/std.rs:465:21
[INFO] [stdout]     |
[INFO] [stdout] 465 |             Skipped(Vec<i32>),
[INFO] [stdout]     |             ------- ^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 465 -             Skipped(Vec<i32>),
[INFO] [stdout] 465 +             Skipped(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/std.rs:616:21
[INFO] [stdout]     |
[INFO] [stdout] 616 |             Skipped(Vec<C>),
[INFO] [stdout]     |             ------- ^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 616 -             Skipped(Vec<C>),
[INFO] [stdout] 616 +             Skipped(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `2` is never read
[INFO] [stdout]    --> src/std.rs:646:54
[INFO] [stdout]     |
[INFO] [stdout] 646 |         struct Foo<T>(T, Box<u8>, #[data_size(skip)] Box<u32>);
[INFO] [stdout]     |                --- field in this struct              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Foo` is never constructed
[INFO] [stdout]    --> src/lib.rs:637:16
[INFO] [stdout]     |
[INFO] [stdout] 637 |         struct Foo {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.99s
[INFO] running `Command { std: "docker" "inspect" "22fec2f1263cdb13b8272f5f6b0ef574fcb5fa542d740cabbc465f106ec2e54d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22fec2f1263cdb13b8272f5f6b0ef574fcb5fa542d740cabbc465f106ec2e54d", kill_on_drop: false }`
[INFO] [stdout] 22fec2f1263cdb13b8272f5f6b0ef574fcb5fa542d740cabbc465f106ec2e54d