[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] building rjoydip/learn-rust against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjoydip%2Flearn-rust" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rjoydip/learn-rust on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "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-10/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d972209e014347e29f013f7b2365b5705f55cca4ebda888b2eb5b09d918c4d27
[INFO] running `Command { std: "docker" "start" "-a" "d972209e014347e29f013f7b2365b5705f55cca4ebda888b2eb5b09d918c4d27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d972209e014347e29f013f7b2365b5705f55cca4ebda888b2eb5b09d918c4d27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d972209e014347e29f013f7b2365b5705f55cca4ebda888b2eb5b09d918c4d27", kill_on_drop: false }`
[INFO] [stdout] d972209e014347e29f013f7b2365b5705f55cca4ebda888b2eb5b09d918c4d27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 518a1925f55b158b04c7037af01605ca822e780c966e68a43c6ee5c99dda7df9
[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" "518a1925f55b158b04c7037af01605ca822e780c966e68a43c6ee5c99dda7df9", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "518a1925f55b158b04c7037af01605ca822e780c966e68a43c6ee5c99dda7df9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "518a1925f55b158b04c7037af01605ca822e780c966e68a43c6ee5c99dda7df9", kill_on_drop: false }`
[INFO] [stdout] 518a1925f55b158b04c7037af01605ca822e780c966e68a43c6ee5c99dda7df9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4d93ef0cc00f9e838e8ec407a4fef3eb712c16ea87066b12cfc414c0dfdf724a
[INFO] running `Command { std: "docker" "start" "-a" "4d93ef0cc00f9e838e8ec407a4fef3eb712c16ea87066b12cfc414c0dfdf724a", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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 was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/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 was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/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 was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[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] 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] 
[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] 
[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: 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] 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] 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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[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" "4d93ef0cc00f9e838e8ec407a4fef3eb712c16ea87066b12cfc414c0dfdf724a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d93ef0cc00f9e838e8ec407a4fef3eb712c16ea87066b12cfc414c0dfdf724a", kill_on_drop: false }`
[INFO] [stdout] 4d93ef0cc00f9e838e8ec407a4fef3eb712c16ea87066b12cfc414c0dfdf724a
