[INFO] cloning repository https://github.com/AmberAAA/rust-playground [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AmberAAA/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmberAAA%2Frust-playground", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmberAAA%2Frust-playground'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4bc5d28123f47bff48f9be8bcf26299daf05e5fb [INFO] checking AmberAAA/rust-playground/4bc5d28123f47bff48f9be8bcf26299daf05e5fb against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmberAAA%2Frust-playground" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/AmberAAA/rust-playground on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/AmberAAA/rust-playground [INFO] finished tweaking git repo https://github.com/AmberAAA/rust-playground [INFO] tweaked toml for git repo https://github.com/AmberAAA/rust-playground written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/AmberAAA/rust-playground 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6f3153c4059b6b9040eab4687dbbe4cfc62d588b17d58ca24170eafdbc2beaa4 [INFO] running `Command { std: "docker" "start" "-a" "6f3153c4059b6b9040eab4687dbbe4cfc62d588b17d58ca24170eafdbc2beaa4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6f3153c4059b6b9040eab4687dbbe4cfc62d588b17d58ca24170eafdbc2beaa4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6f3153c4059b6b9040eab4687dbbe4cfc62d588b17d58ca24170eafdbc2beaa4", kill_on_drop: false }` [INFO] [stdout] 6f3153c4059b6b9040eab4687dbbe4cfc62d588b17d58ca24170eafdbc2beaa4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 42ed579273839b70d99fbd7cff99ae87afa000eab326fcd23d30df9679921772 [INFO] running `Command { std: "docker" "start" "-a" "42ed579273839b70d99fbd7cff99ae87afa000eab326fcd23d30df9679921772", kill_on_drop: false }` [INFO] [stderr] Checking rust-playground v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `noisy_unused_val` [INFO] [stdout] --> src/main.rs:218:9 [INFO] [stdout] | [INFO] [stdout] 218 | let noisy_unused_val = 2; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_noisy_unused_val` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `name` is assigned to, but never used [INFO] [stdout] --> src/main.rs:220:13 [INFO] [stdout] | [INFO] [stdout] 220 | let mut name = 23; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_name` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `name` is never read [INFO] [stdout] --> src/main.rs:221:5 [INFO] [stdout] | [INFO] [stdout] 221 | name = 32; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/main.rs:19:23 [INFO] [stdout] | [INFO] [stdout] 19 | struct DebugPrintable(i32); [INFO] [stdout] | -------------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `DebugPrintable` 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: fields `name` and `age` are never read [INFO] [stdout] --> src/main.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 22 | struct Person<'a> { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 23 | name: &'a str, [INFO] [stdout] | ^^^^ [INFO] [stdout] 24 | age: u8, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `VideoType` is never used [INFO] [stdout] --> src/main.rs:91:6 [INFO] [stdout] | [INFO] [stdout] 91 | enum VideoType { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `List` is never used [INFO] [stdout] --> src/main.rs:196:6 [INFO] [stdout] | [INFO] [stdout] 196 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `prepend` are never used [INFO] [stdout] --> src/main.rs:202:8 [INFO] [stdout] | [INFO] [stdout] 201 | impl List { [INFO] [stdout] | --------- associated items in this implementation [INFO] [stdout] 202 | fn new() -> List { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 206 | fn prepend(self, elem: u32) -> List { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `noisy_unused_val` [INFO] [stdout] --> src/main.rs:218:9 [INFO] [stdout] | [INFO] [stdout] 218 | let noisy_unused_val = 2; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_noisy_unused_val` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `name` is assigned to, but never used [INFO] [stdout] --> src/main.rs:220:13 [INFO] [stdout] | [INFO] [stdout] 220 | let mut name = 23; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_name` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `name` is never read [INFO] [stdout] --> src/main.rs:221:5 [INFO] [stdout] | [INFO] [stdout] 221 | name = 32; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/main.rs:19:23 [INFO] [stdout] | [INFO] [stdout] 19 | struct DebugPrintable(i32); [INFO] [stdout] | -------------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `DebugPrintable` 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: fields `name` and `age` are never read [INFO] [stdout] --> src/main.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 22 | struct Person<'a> { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 23 | name: &'a str, [INFO] [stdout] | ^^^^ [INFO] [stdout] 24 | age: u8, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `VideoType` is never used [INFO] [stdout] --> src/main.rs:91:6 [INFO] [stdout] | [INFO] [stdout] 91 | enum VideoType { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `List` is never used [INFO] [stdout] --> src/main.rs:196:6 [INFO] [stdout] | [INFO] [stdout] 196 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `prepend` are never used [INFO] [stdout] --> src/main.rs:202:8 [INFO] [stdout] | [INFO] [stdout] 201 | impl List { [INFO] [stdout] | --------- associated items in this implementation [INFO] [stdout] 202 | fn new() -> List { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 206 | fn prepend(self, elem: u32) -> List { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s [INFO] running `Command { std: "docker" "inspect" "42ed579273839b70d99fbd7cff99ae87afa000eab326fcd23d30df9679921772", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "42ed579273839b70d99fbd7cff99ae87afa000eab326fcd23d30df9679921772", kill_on_drop: false }` [INFO] [stdout] 42ed579273839b70d99fbd7cff99ae87afa000eab326fcd23d30df9679921772