[INFO] fetching crate cborg 0.3.0...
[INFO] checking cborg-0.3.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate cborg 0.3.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate cborg 0.3.0
[INFO] finished tweaking crates.io crate cborg 0.3.0
[INFO] tweaked toml for crates.io crate cborg 0.3.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cborg 0.3.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] affb67bf9d63078b2f323afe108b18ab9253259e90420fbee278ad0078277379
[INFO] running `Command { std: "docker" "start" "-a" "affb67bf9d63078b2f323afe108b18ab9253259e90420fbee278ad0078277379", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "affb67bf9d63078b2f323afe108b18ab9253259e90420fbee278ad0078277379", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "affb67bf9d63078b2f323afe108b18ab9253259e90420fbee278ad0078277379", kill_on_drop: false }`
[INFO] [stdout] affb67bf9d63078b2f323afe108b18ab9253259e90420fbee278ad0078277379
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a92dee107160270f99fa09c9e3677a2bb18d2f9ef6c3868656e9e619ef120a29
[INFO] running `Command { std: "docker" "start" "-a" "a92dee107160270f99fa09c9e3677a2bb18d2f9ef6c3868656e9e619ef120a29", kill_on_drop: false }`
[INFO] [stderr]     Checking cborg v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `error` is never read
[INFO] [stdout]   --> src/lib.rs:42:2
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct CborError {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 41 |     kind: ErrorKind,
[INFO] [stdout] 42 |     error: Box<dyn error::Error + Send + Sync>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CborError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/value/types.rs:107:27
[INFO] [stdout]     |
[INFO] [stdout] 107 |                 let y: u64 = unsafe { std::mem::transmute::<f64, u64>(*x) };
[INFO] [stdout]     |                                       -------------------------------^^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: replace this with: `f64::to_bits`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `error` is never read
[INFO] [stdout]   --> src/lib.rs:42:2
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct CborError {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 41 |     kind: ErrorKind,
[INFO] [stdout] 42 |     error: Box<dyn error::Error + Send + Sync>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CborError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/value/types.rs:107:27
[INFO] [stdout]     |
[INFO] [stdout] 107 |                 let y: u64 = unsafe { std::mem::transmute::<f64, u64>(*x) };
[INFO] [stdout]     |                                       -------------------------------^^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: replace this with: `f64::to_bits`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "a92dee107160270f99fa09c9e3677a2bb18d2f9ef6c3868656e9e619ef120a29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a92dee107160270f99fa09c9e3677a2bb18d2f9ef6c3868656e9e619ef120a29", kill_on_drop: false }`
[INFO] [stdout] a92dee107160270f99fa09c9e3677a2bb18d2f9ef6c3868656e9e619ef120a29