[INFO] cloning repository https://github.com/tomoat/hello_world
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomoat/hello_world" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomoat%2Fhello_world", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomoat%2Fhello_world'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a581c63863331106b02098b3525229a0ffa89dd8
[INFO] checking tomoat/hello_world against try#987a165cfab916796a8315782b83ac460a651ce2 for pr-145262
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomoat%2Fhello_world" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tomoat/hello_world
[INFO] finished tweaking git repo https://github.com/tomoat/hello_world
[INFO] tweaked toml for git repo https://github.com/tomoat/hello_world written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tomoat/hello_world on toolchain 987a165cfab916796a8315782b83ac460a651ce2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+987a165cfab916796a8315782b83ac460a651ce2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tomoat/hello_world 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" "+987a165cfab916796a8315782b83ac460a651ce2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+987a165cfab916796a8315782b83ac460a651ce2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e54b06597cd99c364b040f5afb0ff87a8b890046c2751ef47eb7f6bf4fe6fa7
[INFO] running `Command { std: "docker" "start" "-a" "7e54b06597cd99c364b040f5afb0ff87a8b890046c2751ef47eb7f6bf4fe6fa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e54b06597cd99c364b040f5afb0ff87a8b890046c2751ef47eb7f6bf4fe6fa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e54b06597cd99c364b040f5afb0ff87a8b890046c2751ef47eb7f6bf4fe6fa7", kill_on_drop: false }`
[INFO] [stdout] 7e54b06597cd99c364b040f5afb0ff87a8b890046c2751ef47eb7f6bf4fe6fa7
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+987a165cfab916796a8315782b83ac460a651ce2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 514e2e9fb4a9acd997a983ab7c44125ff10ed2ff23818928448fb1f32f9de827
[INFO] running `Command { std: "docker" "start" "-a" "514e2e9fb4a9acd997a983ab7c44125ff10ed2ff23818928448fb1f32f9de827", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]    --> src/main.rs:931:18
[INFO] [stdout]     |
[INFO] [stdout] 931 |     struct Color(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: `Color` 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: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1052:16
[INFO] [stdout]      |
[INFO] [stdout] 1052 |         Spades(PokerRank),
[INFO] [stdout]      |         ------ ^^^^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `PokerCard` 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] 1052 -         Spades(PokerRank),
[INFO] [stdout] 1052 +         Spades(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1053:16
[INFO] [stdout]      |
[INFO] [stdout] 1053 |         Hearts(PokerRank),
[INFO] [stdout]      |         ------ ^^^^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `PokerCard` 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] 1053 -         Hearts(PokerRank),
[INFO] [stdout] 1053 +         Hearts(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1054:18
[INFO] [stdout]      |
[INFO] [stdout] 1054 |         Diamonds(PokerRank),
[INFO] [stdout]      |         -------- ^^^^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `PokerCard` 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] 1054 -         Diamonds(PokerRank),
[INFO] [stdout] 1054 +         Diamonds(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1055:15
[INFO] [stdout]      |
[INFO] [stdout] 1055 |         Clubs(PokerRank),
[INFO] [stdout]      |         ----- ^^^^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `PokerCard` 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] 1055 -         Clubs(PokerRank),
[INFO] [stdout] 1055 +         Clubs(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/main.rs:538:21
[INFO] [stdout]     |
[INFO] [stdout] 538 |     assert_eq!(5, *y.deref());
[INFO] [stdout]     |                     ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `i32` does not implement `Deref`, so calling `deref` on `&i32` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]    --> src/main.rs:931:18
[INFO] [stdout]     |
[INFO] [stdout] 931 |     struct Color(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: `Color` 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: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1052:16
[INFO] [stdout]      |
[INFO] [stdout] 1052 |         Spades(PokerRank),
[INFO] [stdout]      |         ------ ^^^^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `PokerCard` 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] 1052 -         Spades(PokerRank),
[INFO] [stdout] 1052 +         Spades(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1053:16
[INFO] [stdout]      |
[INFO] [stdout] 1053 |         Hearts(PokerRank),
[INFO] [stdout]      |         ------ ^^^^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `PokerCard` 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] 1053 -         Hearts(PokerRank),
[INFO] [stdout] 1053 +         Hearts(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1054:18
[INFO] [stdout]      |
[INFO] [stdout] 1054 |         Diamonds(PokerRank),
[INFO] [stdout]      |         -------- ^^^^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `PokerCard` 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] 1054 -         Diamonds(PokerRank),
[INFO] [stdout] 1054 +         Diamonds(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/main.rs:1055:15
[INFO] [stdout]      |
[INFO] [stdout] 1055 |         Clubs(PokerRank),
[INFO] [stdout]      |         ----- ^^^^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `PokerCard` 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] 1055 -         Clubs(PokerRank),
[INFO] [stdout] 1055 +         Clubs(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/main.rs:538:21
[INFO] [stdout]     |
[INFO] [stdout] 538 |     assert_eq!(5, *y.deref());
[INFO] [stdout]     |                     ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `i32` does not implement `Deref`, so calling `deref` on `&i32` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.02s
[INFO] running `Command { std: "docker" "inspect" "514e2e9fb4a9acd997a983ab7c44125ff10ed2ff23818928448fb1f32f9de827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "514e2e9fb4a9acd997a983ab7c44125ff10ed2ff23818928448fb1f32f9de827", kill_on_drop: false }`
[INFO] [stdout] 514e2e9fb4a9acd997a983ab7c44125ff10ed2ff23818928448fb1f32f9de827
