[INFO] cloning repository https://github.com/Shun-Hao/hello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Shun-Hao/hello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShun-Hao%2Fhello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShun-Hao%2Fhello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3915b7793768454a7f474fd19259301cd0bcaca7
[INFO] checking Shun-Hao/hello against try#163937523761cc0def32f1ba9ed63fdf65ad3478 for pr-156749
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShun-Hao%2Fhello" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Shun-Hao/hello
[INFO] finished tweaking git repo https://github.com/Shun-Hao/hello
[INFO] tweaked toml for git repo https://github.com/Shun-Hao/hello written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Shun-Hao/hello on toolchain 163937523761cc0def32f1ba9ed63fdf65ad3478
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Shun-Hao/hello already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 76067cc2ab98db85bc49ff3629b6e97a6f58dd99cb299c9e0893cbe67058cf01
[INFO] running `Command { std: "docker" "start" "76067cc2ab98db85bc49ff3629b6e97a6f58dd99cb299c9e0893cbe67058cf01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "76067cc2ab98db85bc49ff3629b6e97a6f58dd99cb299c9e0893cbe67058cf01" "/opt/rustwide/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76067cc2ab98db85bc49ff3629b6e97a6f58dd99cb299c9e0893cbe67058cf01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "76067cc2ab98db85bc49ff3629b6e97a6f58dd99cb299c9e0893cbe67058cf01" "/opt/rustwide/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking getrandom v0.1.7
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]    --> src/hello.rs:292:18
[INFO] [stdout]     |
[INFO] [stdout] 292 | struct PointCopy(i32, i32, i32);
[INFO] [stdout]     |        --------- ^^^  ^^^  ^^^
[INFO] [stdout]     |        |
[INFO] [stdout]     |        fields in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing these fields
[INFO] [stdout]     = note: `PointCopy` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]    --> src/hello.rs:363:9
[INFO] [stdout]     |
[INFO] [stdout] 363 |     _V4(u8, u8, u8, u8), // associate four u8 data to V4
[INFO] [stdout]     |     --- ^^  ^^  ^^  ^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `_IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]     |
[INFO] [stdout] 363 -     _V4(u8, u8, u8, u8), // associate four u8 data to V4
[INFO] [stdout] 363 +     _V4((), (), (), ()), // associate four u8 data to V4
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.37s
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/hello.rs:371:8
[INFO] [stdout]     |
[INFO] [stdout] 371 |     BB(String),
[INFO] [stdout]     |     -- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MyEnum` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 371 -     BB(String),
[INFO] [stdout] 371 +     BB(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/collection.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Int(i32),
[INFO] [stdout]   |     --- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 8 -     Int(i32),
[INFO] [stdout] 8 +     Int(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/collection.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Float(f64),
[INFO] [stdout]   |     ----- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 9 -     Float(f64),
[INFO] [stdout] 9 +     Float(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/collection.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Text(String),
[INFO] [stdout]    |     ---- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 10 -     Text(String),
[INFO] [stdout] 10 +     Text(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Papers` is never constructed
[INFO] [stdout]   --> src/generic.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Papers {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]    --> src/hello.rs:292:18
[INFO] [stdout]     |
[INFO] [stdout] 292 | struct PointCopy(i32, i32, i32);
[INFO] [stdout]     |        --------- ^^^  ^^^  ^^^
[INFO] [stdout]     |        |
[INFO] [stdout]     |        fields in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing these fields
[INFO] [stdout]     = note: `PointCopy` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]    --> src/hello.rs:363:9
[INFO] [stdout]     |
[INFO] [stdout] 363 |     _V4(u8, u8, u8, u8), // associate four u8 data to V4
[INFO] [stdout]     |     --- ^^  ^^  ^^  ^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `_IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]     |
[INFO] [stdout] 363 -     _V4(u8, u8, u8, u8), // associate four u8 data to V4
[INFO] [stdout] 363 +     _V4((), (), (), ()), // associate four u8 data to V4
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/hello.rs:371:8
[INFO] [stdout]     |
[INFO] [stdout] 371 |     BB(String),
[INFO] [stdout]     |     -- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MyEnum` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 371 -     BB(String),
[INFO] [stdout] 371 +     BB(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/collection.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Int(i32),
[INFO] [stdout]   |     --- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 8 -     Int(i32),
[INFO] [stdout] 8 +     Int(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/collection.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Float(f64),
[INFO] [stdout]   |     ----- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 9 -     Float(f64),
[INFO] [stdout] 9 +     Float(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/collection.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Text(String),
[INFO] [stdout]    |     ---- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 10 -     Text(String),
[INFO] [stdout] 10 +     Text(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Papers` is never constructed
[INFO] [stdout]   --> src/generic.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Papers {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "76067cc2ab98db85bc49ff3629b6e97a6f58dd99cb299c9e0893cbe67058cf01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76067cc2ab98db85bc49ff3629b6e97a6f58dd99cb299c9e0893cbe67058cf01", kill_on_drop: false }`
[INFO] [stdout] 76067cc2ab98db85bc49ff3629b6e97a6f58dd99cb299c9e0893cbe67058cf01
