[INFO] cloning repository https://github.com/janithh/rust_lrn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/janithh/rust_lrn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjanithh%2Frust_lrn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjanithh%2Frust_lrn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca600d388de89a08b89ba69e78234adb108c0620
[INFO] checking janithh/rust_lrn against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjanithh%2Frust_lrn" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/janithh/rust_lrn on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/janithh/rust_lrn
[INFO] finished tweaking git repo https://github.com/janithh/rust_lrn
[INFO] tweaked toml for git repo https://github.com/janithh/rust_lrn written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/janithh/rust_lrn 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa658401c2a8a23ea49fbed1c320faffa73d7b6de0d5f8e829195289f2f1826b
[INFO] running `Command { std: "docker" "start" "-a" "aa658401c2a8a23ea49fbed1c320faffa73d7b6de0d5f8e829195289f2f1826b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa658401c2a8a23ea49fbed1c320faffa73d7b6de0d5f8e829195289f2f1826b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa658401c2a8a23ea49fbed1c320faffa73d7b6de0d5f8e829195289f2f1826b", kill_on_drop: false }`
[INFO] [stdout] aa658401c2a8a23ea49fbed1c320faffa73d7b6de0d5f8e829195289f2f1826b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f4423f41912a121c000f441fc05a3aec67c126d94fb59630e9ebf8c39d8ef09
[INFO] running `Command { std: "docker" "start" "-a" "6f4423f41912a121c000f441fc05a3aec67c126d94fb59630e9ebf8c39d8ef09", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rust_lrn v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `FromEx` is never used
[INFO] [stdout]  --> src/./bin/sec2_prim_data_types/sec2_prim_data_types.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | trait FromEx {
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `average` is never used
[INFO] [stdout]   --> src/./bin/sec2_prim_data_types/sec2_prim_data_types.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn average(a: f32, b:f32, c:f32) -> f32 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FromEx` is never used
[INFO] [stdout]  --> src/./bin/sec2_prim_data_types/sec2_prim_data_types.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | trait FromEx {
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FromEx` is never used
[INFO] [stdout]  --> src/bin/sec2_prim_data_types/sec2_prim_data_types.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | trait FromEx {
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FromEx` is never used
[INFO] [stdout]  --> src/bin/sec2_prim_data_types/sec2_prim_data_types.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | trait FromEx {
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/bin/sec10_structs/sec10_structs.rs:39:18
[INFO] [stdout]    |
[INFO] [stdout] 39 |     struct Color(u8, u8, u8);
[INFO] [stdout]    |            ----- ^^  ^^  ^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `Color` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `1` and `2` are never read
[INFO] [stdout]   --> src/bin/sec10_structs/sec10_structs.rs:43:23
[INFO] [stdout]    |
[INFO] [stdout] 43 |     struct Point(u32, u32, u32);
[INFO] [stdout]    |            -----      ^^^  ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `Point` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/bin/sec10_structs/sec10_structs.rs:39:18
[INFO] [stdout]    |
[INFO] [stdout] 39 |     struct Color(u8, u8, u8);
[INFO] [stdout]    |            ----- ^^  ^^  ^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `Color` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `1` and `2` are never read
[INFO] [stdout]   --> src/bin/sec10_structs/sec10_structs.rs:43:23
[INFO] [stdout]    |
[INFO] [stdout] 43 |     struct Point(u32, u32, u32);
[INFO] [stdout]    |            -----      ^^^  ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `Point` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "6f4423f41912a121c000f441fc05a3aec67c126d94fb59630e9ebf8c39d8ef09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f4423f41912a121c000f441fc05a3aec67c126d94fb59630e9ebf8c39d8ef09", kill_on_drop: false }`
[INFO] [stdout] 6f4423f41912a121c000f441fc05a3aec67c126d94fb59630e9ebf8c39d8ef09