[INFO] cloning repository https://github.com/kdnk/rust_introduction [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kdnk/rust_introduction" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdnk%2Frust_introduction", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdnk%2Frust_introduction'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4a644f9533c899940a70df93d978e23509f90120 [INFO] checking kdnk/rust_introduction against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdnk%2Frust_introduction" "/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/kdnk/rust_introduction on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kdnk/rust_introduction [INFO] finished tweaking git repo https://github.com/kdnk/rust_introduction [INFO] tweaked toml for git repo https://github.com/kdnk/rust_introduction written to /workspace/builds/worker-10/source/Cargo.toml [INFO] crate git repo https://github.com/kdnk/rust_introduction already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 401c6ac475dfb46aaaa3c0bb78678e53c57f7943daa752892928fce2d53fcd95 [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" "401c6ac475dfb46aaaa3c0bb78678e53c57f7943daa752892928fce2d53fcd95", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "401c6ac475dfb46aaaa3c0bb78678e53c57f7943daa752892928fce2d53fcd95", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "401c6ac475dfb46aaaa3c0bb78678e53c57f7943daa752892928fce2d53fcd95", kill_on_drop: false }` [INFO] [stdout] 401c6ac475dfb46aaaa3c0bb78678e53c57f7943daa752892928fce2d53fcd95 [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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 30d6799e04de7722f571a1581f0ca2ffbf7a91e7c09ba69ad0b1665d2a5b5cdf [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" "30d6799e04de7722f571a1581f0ca2ffbf7a91e7c09ba69ad0b1665d2a5b5cdf", kill_on_drop: false }` [INFO] [stderr] Checking rust_introduction v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: couldn't read src/07_ownership/04_borrow.rs: No such file or directory (os error 2) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_introduction` [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] error: couldn't read src/07_ownership/02_value_scope.rs: No such file or directory (os error 2) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: couldn't read src/07_ownership/04_borrow.rs: No such file or directory (os error 2) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: couldn't read src/07_ownership/use_toy_vec.rs: No such file or directory (os error 2) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: couldn't read src/07_ownership/toy_vec.rs: No such file or directory (os error 2) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: couldn't read src/07_ownership/01_value_ownership.rs: No such file or directory (os error 2) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/08_trait/03_dispatch.rs:8:34 [INFO] [stdout] | [INFO] [stdout] 8 | ::to_string(t) [INFO] [stdout] | ^ [INFO] [stdout] | | [INFO] [stdout] | expected `&i32`, found `i32` [INFO] [stdout] | help: consider borrowing here: `&t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: couldn't read src/07_ownership/use_toy_vec.rs: No such file or directory (os error 2) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [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 E0308`. [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/08_trait/03_dispatch.rs:8:34 [INFO] [stdout] | [INFO] [stdout] 8 | ::to_string(t) [INFO] [stdout] | ^ [INFO] [stdout] | | [INFO] [stdout] | expected `&i32`, found `i32` [INFO] [stdout] | help: consider borrowing here: `&t` [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 E0308`. [INFO] [stdout] [INFO] [stdout] error: couldn't read src/07_ownership/02_value_scope.rs: No such file or directory (os error 2) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/08_trait/02_trait_generics.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let data = Box::init("foo"); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/08_trait/02_trait_generics.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let data = Box::::init(0.1); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/08_trait/02_trait_generics.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | let data: Box = Init::init(0.1); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `one_u32` [INFO] [stdout] --> src/08_trait/02_trait_generics.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | let one_u32: u32 = 1.cast(); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_one_u32` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `one_u32` [INFO] [stdout] --> src/08_trait/02_trait_generics.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let one_u32: u64 = 1.cast(); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_one_u32` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `add0` [INFO] [stdout] --> src/05_user_defined_types/04_result.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn add0(s0: &str, s1: &str) -> Result { [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: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v1` [INFO] [stdout] --> src/05_user_defined_types/01_main_types.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 11 | let v1 = vec![false, true, false]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v4` [INFO] [stdout] --> src/05_user_defined_types/01_main_types.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let v4 = vec![vec!['a', 'b', 'c'], vec!['d']]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_v4` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "30d6799e04de7722f571a1581f0ca2ffbf7a91e7c09ba69ad0b1665d2a5b5cdf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "30d6799e04de7722f571a1581f0ca2ffbf7a91e7c09ba69ad0b1665d2a5b5cdf", kill_on_drop: false }` [INFO] [stdout] 30d6799e04de7722f571a1581f0ca2ffbf7a91e7c09ba69ad0b1665d2a5b5cdf