[INFO] cloning repository https://github.com/rektdeckard/rust-concepts [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rektdeckard/rust-concepts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frektdeckard%2Frust-concepts", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frektdeckard%2Frust-concepts'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b3919b8ce65f6ae0483cbf3a0bcb08825818624e [INFO] checking rektdeckard/rust-concepts against try#4949cf2f817beadb9a248d423b6d55d6d2398ffe for pr-142681 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frektdeckard%2Frust-concepts" "/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/rektdeckard/rust-concepts [INFO] finished tweaking git repo https://github.com/rektdeckard/rust-concepts [INFO] tweaked toml for git repo https://github.com/rektdeckard/rust-concepts written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/rektdeckard/rust-concepts on toolchain 4949cf2f817beadb9a248d423b6d55d6d2398ffe [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4949cf2f817beadb9a248d423b6d55d6d2398ffe" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/rektdeckard/rust-concepts 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" "+4949cf2f817beadb9a248d423b6d55d6d2398ffe" "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 [ERROR] error running command: no output for 300 seconds [INFO] checking rektdeckard/rust-concepts against try#4949cf2f817beadb9a248d423b6d55d6d2398ffe for pr-142681 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frektdeckard%2Frust-concepts" "/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/rektdeckard/rust-concepts [INFO] finished tweaking git repo https://github.com/rektdeckard/rust-concepts [INFO] tweaked toml for git repo https://github.com/rektdeckard/rust-concepts written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/rektdeckard/rust-concepts on toolchain 4949cf2f817beadb9a248d423b6d55d6d2398ffe [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4949cf2f817beadb9a248d423b6d55d6d2398ffe" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/rektdeckard/rust-concepts 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" "+4949cf2f817beadb9a248d423b6d55d6d2398ffe" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+4949cf2f817beadb9a248d423b6d55d6d2398ffe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 37f81730d40178a7f9fbf2bd2a39b5831a642a098bc80118fc14068f3f60eb73 [INFO] running `Command { std: "docker" "start" "-a" "37f81730d40178a7f9fbf2bd2a39b5831a642a098bc80118fc14068f3f60eb73", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "37f81730d40178a7f9fbf2bd2a39b5831a642a098bc80118fc14068f3f60eb73", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "37f81730d40178a7f9fbf2bd2a39b5831a642a098bc80118fc14068f3f60eb73", kill_on_drop: false }` [INFO] [stdout] 37f81730d40178a7f9fbf2bd2a39b5831a642a098bc80118fc14068f3f60eb73 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+4949cf2f817beadb9a248d423b6d55d6d2398ffe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 69ed69e57169d47e1320fa5606447c2c20430fb333b6294e831f7a4dea78d483 [INFO] running `Command { std: "docker" "start" "-a" "69ed69e57169d47e1320fa5606447c2c20430fb333b6294e831f7a4dea78d483", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.82 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Checking minigrep v0.1.0 (/opt/rustwide/workdir/minigrep) [INFO] [stderr] Checking vector v0.1.0 (/opt/rustwide/workdir/vector) [INFO] [stderr] Checking concurrency v0.1.0 (/opt/rustwide/workdir/concurrency) [INFO] [stderr] Checking linked-list v0.1.0 (/opt/rustwide/workdir/linked-list) [INFO] [stderr] Checking standard v0.1.0 (/opt/rustwide/workdir/standard) [INFO] [stderr] Checking smart-pointers v0.1.0 (/opt/rustwide/workdir/smart-pointers) [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> smart-pointers/src/lib.rs:12:27 [INFO] [stdout] | [INFO] [stdout] 12 | pub fn new(messenger: &T, max: usize) -> LimitTracker { [INFO] [stdout] | ^^ --------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 12 | pub fn new(messenger: &T, max: usize) -> LimitTracker<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `1` is never read [INFO] [stdout] --> smart-pointers/src/lib.rs:57:23 [INFO] [stdout] | [INFO] [stdout] 57 | Cons(i32, Box), [INFO] [stdout] | ---- ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [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] 57 - Cons(i32, Box), [INFO] [stdout] 57 + Cons(i32, ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> smart-pointers/src/lib.rs:131:18 [INFO] [stdout] | [INFO] [stdout] 131 | Cons(i32, Rc), [INFO] [stdout] | ---- ^^^ ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [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] 131 - Cons(i32, Rc), [INFO] [stdout] 131 + Cons((), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> smart-pointers/src/lib.rs:194:18 [INFO] [stdout] | [INFO] [stdout] 194 | Cons(Rc>, Rc), [INFO] [stdout] | ---- ^^^^^^^^^^^^^^^^ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `List` 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] 194 - Cons(Rc>, Rc), [INFO] [stdout] 194 + Cons((), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> smart-pointers/src/lib.rs:217:18 [INFO] [stdout] | [INFO] [stdout] 217 | Cons(i32, RefCell>), [INFO] [stdout] | ---- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `List` 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] 217 - Cons(i32, RefCell>), [INFO] [stdout] 217 + Cons((), RefCell>), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `value` and `children` are never read [INFO] [stdout] --> smart-pointers/src/lib.rs:258:13 [INFO] [stdout] | [INFO] [stdout] 257 | struct Node { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 258 | value: i32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 259 | parent: RefCell>, [INFO] [stdout] 260 | children: RefCell>>, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> smart-pointers/src/lib.rs:12:27 [INFO] [stdout] | [INFO] [stdout] 12 | pub fn new(messenger: &T, max: usize) -> LimitTracker { [INFO] [stdout] | ^^ --------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 12 | pub fn new(messenger: &T, max: usize) -> LimitTracker<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rand v0.5.6 [INFO] [stderr] Checking traits v0.1.0 (/opt/rustwide/workdir/traits) [INFO] [stdout] warning: constant `CELCIUS_KELVIN_OFFSET` is never used [INFO] [stdout] --> traits/src/convert.rs:3:7 [INFO] [stdout] | [INFO] [stdout] 3 | const CELCIUS_KELVIN_OFFSET: f64 = 273.15; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `CELCIUS_FAHRENHEIT_RATIO` is never used [INFO] [stdout] --> traits/src/convert.rs:4:7 [INFO] [stdout] | [INFO] [stdout] 4 | const CELCIUS_FAHRENHEIT_RATIO: f64 = 9.0 / 5.0; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `CELCIUS_FAHRENHEIT_OFFSET` is never used [INFO] [stdout] --> traits/src/convert.rs:5:7 [INFO] [stdout] | [INFO] [stdout] 5 | const CELCIUS_FAHRENHEIT_OFFSET: f64 = 32.0; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Temperature` is never constructed [INFO] [stdout] --> traits/src/convert.rs:7:12 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct Temperature { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `in_fahrenheit`, `in_celcius`, and `in_kelvin` are never used [INFO] [stdout] --> traits/src/convert.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 11 | impl Temperature { [INFO] [stdout] | ---------------- associated items in this implementation [INFO] [stdout] 12 | pub fn new(celcius: f64) -> Temperature { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 16 | pub fn in_fahrenheit(&self) -> f64 { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 20 | pub fn in_celcius(&self) -> f64 { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 24 | pub fn in_kelvin(&self) -> f64 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `reply` and `retweet` are never read [INFO] [stdout] --> traits/src/traits.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 8 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 11 | pub reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 12 | pub retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> traits/src/traits.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 21 | pub struct Article { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 25 | pub content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `reply` and `retweet` are never read [INFO] [stdout] --> traits/src/traits.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 8 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 11 | pub reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 12 | pub retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> traits/src/traits.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 21 | pub struct Article { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 25 | pub content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.99s [INFO] running `Command { std: "docker" "inspect" "69ed69e57169d47e1320fa5606447c2c20430fb333b6294e831f7a4dea78d483", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "69ed69e57169d47e1320fa5606447c2c20430fb333b6294e831f7a4dea78d483", kill_on_drop: false }` [INFO] [stdout] 69ed69e57169d47e1320fa5606447c2c20430fb333b6294e831f7a4dea78d483