[INFO] cloning repository https://github.com/rjoydip/learn-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rjoydip/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjoydip%2Flearn-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjoydip%2Flearn-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 0e91f308ef5e3ecc09594c3d9db61be3dfe1b6f5 [INFO] checking rjoydip/learn-rust against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjoydip%2Flearn-rust" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rjoydip/learn-rust on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rjoydip/learn-rust [INFO] finished tweaking git repo https://github.com/rjoydip/learn-rust [INFO] tweaked toml for git repo https://github.com/rjoydip/learn-rust written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/rjoydip/learn-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 914c1d1d58a2143a3169644ddbf3602e3a38cd76ffe85558698b023a7de98517 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "914c1d1d58a2143a3169644ddbf3602e3a38cd76ffe85558698b023a7de98517", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "914c1d1d58a2143a3169644ddbf3602e3a38cd76ffe85558698b023a7de98517", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "914c1d1d58a2143a3169644ddbf3602e3a38cd76ffe85558698b023a7de98517", kill_on_drop: false }` [INFO] [stdout] 914c1d1d58a2143a3169644ddbf3602e3a38cd76ffe85558698b023a7de98517 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a5dd20fc3052bebe9a5be1502fe3b56623626af2eb42390d9c87360ae7015880 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "a5dd20fc3052bebe9a5be1502fe3b56623626af2eb42390d9c87360ae7015880", kill_on_drop: false }` [INFO] [stderr] Checking learn_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> examples/match.rs:46:10 [INFO] [stdout] | [INFO] [stdout] 46 | 4...7 => println!("In between 4...7: {}", a), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> examples/match.rs:61:15 [INFO] [stdout] | [INFO] [stdout] 61 | n @ 1 ... 10 => println!("Between 1 to 10 : {}", n), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> examples/match.rs:62:16 [INFO] [stdout] | [INFO] [stdout] 62 | n @ 11 ... 20 => println!("Between 11 to 20 : {}", n), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `x` is never read [INFO] [stdout] --> examples/var.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | let mut x = 5; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0428]: the name `main` is defined multiple times [INFO] [stdout] --> examples/owenership_borrowing.rs:21:1 [INFO] [stdout] | [INFO] [stdout] 4 | fn main() { [INFO] [stdout] | --------- previous definition of the value `main` here [INFO] [stdout] ... [INFO] [stdout] 21 | fn main() { [INFO] [stdout] | ^^^^^^^^^ `main` redefined here [INFO] [stdout] | [INFO] [stdout] = note: `main` must be defined only once in the value namespace of this module [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0428]: the name `main` is defined multiple times [INFO] [stdout] --> examples/owenership_borrowing.rs:55:1 [INFO] [stdout] | [INFO] [stdout] 4 | fn main() { [INFO] [stdout] | --------- previous definition of the value `main` here [INFO] [stdout] ... [INFO] [stdout] 55 | fn main() { [INFO] [stdout] | ^^^^^^^^^ `main` redefined here [INFO] [stdout] | [INFO] [stdout] = note: `main` must be defined only once in the value namespace of this module [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0428]: the name `main` is defined multiple times [INFO] [stdout] --> examples/owenership_borrowing.rs:74:1 [INFO] [stdout] | [INFO] [stdout] 4 | fn main() { [INFO] [stdout] | --------- previous definition of the value `main` here [INFO] [stdout] ... [INFO] [stdout] 74 | fn main() { [INFO] [stdout] | ^^^^^^^^^ `main` redefined here [INFO] [stdout] | [INFO] [stdout] = note: `main` must be defined only once in the value namespace of this module [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0428`. [INFO] [stdout] [INFO] [stderr] error: could not compile `learn_rust` due to 4 previous errors [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0428]: the name `main` is defined multiple times [INFO] [stdout] --> examples/struct.rs:32:1 [INFO] [stdout] | [INFO] [stdout] 15 | fn main() { [INFO] [stdout] | --------- previous definition of the value `main` here [INFO] [stdout] ... [INFO] [stdout] 32 | fn main() { [INFO] [stdout] | ^^^^^^^^^ `main` redefined here [INFO] [stdout] | [INFO] [stdout] = note: `main` must be defined only once in the value namespace of this module [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0428`. [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> examples/loop.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | / /** [INFO] [stdout] 31 | | * Break [INFO] [stdout] 32 | | **/ [INFO] [stdout] | |________^ [INFO] [stdout] 33 | let mut x = 0; [INFO] [stdout] | -------------- rustdoc does not generate documentation for statements [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stdout] = help: use `/* */` for a plain comment [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> examples/loop.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 65 | / /** [INFO] [stdout] 66 | | * Continue [INFO] [stdout] 67 | | **/ [INFO] [stdout] | |________^ [INFO] [stdout] 68 | / for i in 1..20 { [INFO] [stdout] 69 | | if i == 2 { [INFO] [stdout] 70 | | continue; [INFO] [stdout] 71 | | } [INFO] [stdout] 72 | | println!("Value of i is: {}", i); [INFO] [stdout] 73 | | } [INFO] [stdout] | |_____- rustdoc does not generate documentation for expressions [INFO] [stdout] | [INFO] [stdout] = help: use `/* */` for a plain comment [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> examples/loop.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 3 | / loop { [INFO] [stdout] 4 | | println!("Forever"); [INFO] [stdout] 5 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] ... [INFO] [stdout] 8 | let mut count = 5; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "a5dd20fc3052bebe9a5be1502fe3b56623626af2eb42390d9c87360ae7015880", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a5dd20fc3052bebe9a5be1502fe3b56623626af2eb42390d9c87360ae7015880", kill_on_drop: false }` [INFO] [stdout] a5dd20fc3052bebe9a5be1502fe3b56623626af2eb42390d9c87360ae7015880