[INFO] cloning repository https://github.com/releek/three_programs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/releek/three_programs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freleek%2Fthree_programs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freleek%2Fthree_programs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d3a7f39d8c8624b0ba9a37373895f09eca0da73
[INFO] checking releek/three_programs against try#e5b0618d996a6a3941e423fd3e170737b8dbdc92 for pr-151822
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freleek%2Fthree_programs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/releek/three_programs
[INFO] finished tweaking git repo https://github.com/releek/three_programs
[INFO] tweaked toml for git repo https://github.com/releek/three_programs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/releek/three_programs on toolchain e5b0618d996a6a3941e423fd3e170737b8dbdc92
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e5b0618d996a6a3941e423fd3e170737b8dbdc92" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/releek/three_programs 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" "+e5b0618d996a6a3941e423fd3e170737b8dbdc92" "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-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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+e5b0618d996a6a3941e423fd3e170737b8dbdc92" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f5401dfaf9e780b3dba778bf3abdaa195b1434d6a46fa4f178ff31973386a67
[INFO] running `Command { std: "docker" "start" "-a" "6f5401dfaf9e780b3dba778bf3abdaa195b1434d6a46fa4f178ff31973386a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f5401dfaf9e780b3dba778bf3abdaa195b1434d6a46fa4f178ff31973386a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f5401dfaf9e780b3dba778bf3abdaa195b1434d6a46fa4f178ff31973386a67", kill_on_drop: false }`
[INFO] [stdout] 6f5401dfaf9e780b3dba778bf3abdaa195b1434d6a46fa4f178ff31973386a67
[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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+e5b0618d996a6a3941e423fd3e170737b8dbdc92" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c74127f2d202757e1fd6270d6f8b1816f754d563c34fd73f6a4ff288c701dd14
[INFO] running `Command { std: "docker" "start" "-a" "c74127f2d202757e1fd6270d6f8b1816f754d563c34fd73f6a4ff288c701dd14", kill_on_drop: false }`
[INFO] [stderr]     Checking three_programs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Nested` is never constructed
[INFO] [stdout]  --> src/grid/nested.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Nested {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/grid/profile.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub struct Profile {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout]  5 |     pub program: Program,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]  6 |     pub repetitions: usize,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]  7 |     pub row_count: usize,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]  8 |     pub col_count: usize,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]  9 |     pub element_count: usize,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 10 |     pub element_sum: usize,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 11 |     pub time_min: f32,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 12 |     pub time_max: f32,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 13 |     pub time_mean: f32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 14 |     pub time_stdev: f32,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Profile` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Nested` is never constructed
[INFO] [stdout]  --> src/grid/nested.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Nested {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/grid/profile.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub struct Profile {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout]  5 |     pub program: Program,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]  6 |     pub repetitions: usize,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]  7 |     pub row_count: usize,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]  8 |     pub col_count: usize,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]  9 |     pub element_count: usize,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 10 |     pub element_sum: usize,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 11 |     pub time_min: f32,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 12 |     pub time_max: f32,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 13 |     pub time_mean: f32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 14 |     pub time_stdev: f32,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Profile` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "c74127f2d202757e1fd6270d6f8b1816f754d563c34fd73f6a4ff288c701dd14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c74127f2d202757e1fd6270d6f8b1816f754d563c34fd73f6a4ff288c701dd14", kill_on_drop: false }`
[INFO] [stdout] c74127f2d202757e1fd6270d6f8b1816f754d563c34fd73f6a4ff288c701dd14