[INFO] fetching crate smallbox 0.8.2...
[INFO] checking smallbox-0.8.2 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate smallbox 0.8.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate smallbox 0.8.2 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate smallbox 0.8.2
[INFO] finished tweaking crates.io crate smallbox 0.8.2
[INFO] tweaked toml for crates.io crate smallbox 0.8.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 564e6777a06784ab19ac4e1e96ddb3b11ea9a514c13c3c054d70bf59322d3331
[INFO] running `Command { std: "docker" "start" "-a" "564e6777a06784ab19ac4e1e96ddb3b11ea9a514c13c3c054d70bf59322d3331", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "564e6777a06784ab19ac4e1e96ddb3b11ea9a514c13c3c054d70bf59322d3331", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "564e6777a06784ab19ac4e1e96ddb3b11ea9a514c13c3c054d70bf59322d3331", kill_on_drop: false }`
[INFO] [stdout] 564e6777a06784ab19ac4e1e96ddb3b11ea9a514c13c3c054d70bf59322d3331
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 185110cefc8489809c78305eacaaa6a5acde1c7103520c1c620f2a5d2d0afee7
[INFO] running `Command { std: "docker" "start" "-a" "185110cefc8489809c78305eacaaa6a5acde1c7103520c1c620f2a5d2d0afee7", kill_on_drop: false }`
[INFO] [stderr]     Checking smallbox v0.8.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/smallbox.rs:538:43
[INFO] [stdout]     |
[INFO] [stdout] 538 |         struct Struct<'a>(&'a Cell<bool>, u8);
[INFO] [stdout]     |                ------                     ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/smallbox.rs:562:23
[INFO] [stdout]     |
[INFO] [stdout] 562 |         struct NoDrop(S1);
[INFO] [stdout]     |                ------ ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "185110cefc8489809c78305eacaaa6a5acde1c7103520c1c620f2a5d2d0afee7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "185110cefc8489809c78305eacaaa6a5acde1c7103520c1c620f2a5d2d0afee7", kill_on_drop: false }`
[INFO] [stdout] 185110cefc8489809c78305eacaaa6a5acde1c7103520c1c620f2a5d2d0afee7
[INFO] checking smallbox-0.8.2 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate smallbox 0.8.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate smallbox 0.8.2 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate smallbox 0.8.2
[INFO] finished tweaking crates.io crate smallbox 0.8.2
[INFO] tweaked toml for crates.io crate smallbox 0.8.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0056a229225367c6b61f9f7e3c54d225632d2ab0298cb0fd68f230f9b1888783
[INFO] running `Command { std: "docker" "start" "-a" "0056a229225367c6b61f9f7e3c54d225632d2ab0298cb0fd68f230f9b1888783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0056a229225367c6b61f9f7e3c54d225632d2ab0298cb0fd68f230f9b1888783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0056a229225367c6b61f9f7e3c54d225632d2ab0298cb0fd68f230f9b1888783", kill_on_drop: false }`
[INFO] [stdout] 0056a229225367c6b61f9f7e3c54d225632d2ab0298cb0fd68f230f9b1888783
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c959441176345a4f3c9e2a7c597bf06655c4c4503f870ca9ed50b5edda864cf1
[INFO] running `Command { std: "docker" "start" "-a" "c959441176345a4f3c9e2a7c597bf06655c4c4503f870ca9ed50b5edda864cf1", kill_on_drop: false }`
[INFO] [stderr]     Checking smallbox v0.8.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/smallbox.rs:538:43
[INFO] [stdout]     |
[INFO] [stdout] 538 |         struct Struct<'a>(&'a Cell<bool>, u8);
[INFO] [stdout]     |                ------                     ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/smallbox.rs:562:23
[INFO] [stdout]     |
[INFO] [stdout] 562 |         struct NoDrop(S1);
[INFO] [stdout]     |                ------ ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "c959441176345a4f3c9e2a7c597bf06655c4c4503f870ca9ed50b5edda864cf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c959441176345a4f3c9e2a7c597bf06655c4c4503f870ca9ed50b5edda864cf1", kill_on_drop: false }`
[INFO] [stdout] c959441176345a4f3c9e2a7c597bf06655c4c4503f870ca9ed50b5edda864cf1