[INFO] fetching crate yamakagashi_core 0.1.0...
[INFO] checking yamakagashi_core-0.1.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate yamakagashi_core 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate yamakagashi_core 0.1.0
[INFO] finished tweaking crates.io crate yamakagashi_core 0.1.0
[INFO] tweaked toml for crates.io crate yamakagashi_core 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate yamakagashi_core 0.1.0 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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] b6ad990146cffb2742dceedc4267b9ef8a21872df559015f2635674cfa0ee90e
[INFO] running `Command { std: "docker" "start" "-a" "b6ad990146cffb2742dceedc4267b9ef8a21872df559015f2635674cfa0ee90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6ad990146cffb2742dceedc4267b9ef8a21872df559015f2635674cfa0ee90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6ad990146cffb2742dceedc4267b9ef8a21872df559015f2635674cfa0ee90e", kill_on_drop: false }`
[INFO] [stdout] b6ad990146cffb2742dceedc4267b9ef8a21872df559015f2635674cfa0ee90e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] c3022814ae2634edf8646a60b3e1838c1532c41e343eede7fdefae3974d6cce9
[INFO] running `Command { std: "docker" "start" "-a" "c3022814ae2634edf8646a60b3e1838c1532c41e343eede7fdefae3974d6cce9", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.2.27
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling lzma-sys v0.1.20
[INFO] [stderr]     Checking xz2 v0.1.7
[INFO] [stderr]     Checking yamakagashi_core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `DisplayVec` is never constructed
[INFO] [stdout]   --> src/my_vector.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct DisplayVec<MyFp48>(pub Vec<MyFp48>);
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/my_float.rs:433:9
[INFO] [stdout]     |
[INFO] [stdout] 433 |     let a = MyFp48::new(3.14154052734375);
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DisplayVec` is never constructed
[INFO] [stdout]   --> src/my_vector.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct DisplayVec<MyFp48>(pub Vec<MyFp48>);
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.86s
[INFO] running `Command { std: "docker" "inspect" "c3022814ae2634edf8646a60b3e1838c1532c41e343eede7fdefae3974d6cce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3022814ae2634edf8646a60b3e1838c1532c41e343eede7fdefae3974d6cce9", kill_on_drop: false }`
[INFO] [stdout] c3022814ae2634edf8646a60b3e1838c1532c41e343eede7fdefae3974d6cce9