[INFO] cloning repository https://github.com/steshaw/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/steshaw/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteshaw%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteshaw%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 06b46229ca0dd5b5fb874746d6ace8665151b11f [INFO] checking steshaw/rustlings against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteshaw%2Frustlings" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/steshaw/rustlings on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/steshaw/rustlings [INFO] finished tweaking git repo https://github.com/steshaw/rustlings [INFO] tweaked toml for git repo https://github.com/steshaw/rustlings written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/steshaw/rustlings already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded normalize-line-endings v0.2.2 [INFO] [stderr] Downloaded notify v4.0.12 [INFO] [stderr] Downloaded treeline v0.1.0 [INFO] [stderr] Downloaded console v0.6.2 [INFO] [stderr] Downloaded clicolors-control v0.2.0 [INFO] [stderr] Downloaded predicates v1.0.1 [INFO] [stderr] Downloaded encode_unicode v0.3.5 [INFO] [stderr] Downloaded console v0.7.5 [INFO] [stderr] Downloaded escargot v0.4.0 [INFO] [stderr] Downloaded indicatif v0.9.0 [INFO] [stderr] Downloaded clicolors-control v1.0.0 [INFO] [stderr] Downloaded assert_cmd v0.11.1 [INFO] [stderr] Downloaded fsevent v0.4.0 [INFO] [stderr] Downloaded fsevent-sys v2.0.1 [INFO] [stderr] Downloaded float-cmp v0.4.0 [INFO] [stderr] Downloaded predicates-core v1.0.0 [INFO] [stderr] Downloaded difference v2.0.0 [INFO] [stderr] Downloaded filetime v0.2.5 [INFO] [stderr] Downloaded predicates-tree v1.0.0 [INFO] [stderr] Downloaded aho-corasick v0.6.10 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fd8ca8e47490f90d6d7f093d244daaa846347fffd3fa894e9caa039d8d0b0f54 [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" "fd8ca8e47490f90d6d7f093d244daaa846347fffd3fa894e9caa039d8d0b0f54", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fd8ca8e47490f90d6d7f093d244daaa846347fffd3fa894e9caa039d8d0b0f54", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fd8ca8e47490f90d6d7f093d244daaa846347fffd3fa894e9caa039d8d0b0f54", kill_on_drop: false }` [INFO] [stdout] fd8ca8e47490f90d6d7f093d244daaa846347fffd3fa894e9caa039d8d0b0f54 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 38172a057d09c543ec2156c69ca7af0779cb9c4b3af82d9025a710b2f7f00a60 [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" "38172a057d09c543ec2156c69ca7af0779cb9c4b3af82d9025a710b2f7f00a60", kill_on_drop: false }` [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Checking bitflags v1.0.4 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Checking itoa v0.4.4 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking glob v0.3.0 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Checking regex-syntax v0.5.6 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking lock_api v0.2.0 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking clicolors-control v0.2.0 [INFO] [stderr] Checking filetime v0.2.5 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking inotify v0.6.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Compiling parking_lot_core v0.5.0 [INFO] [stderr] Compiling parking_lot v0.8.0 [INFO] [stderr] Compiling syn v0.15.34 [INFO] [stderr] Checking mio-extras v2.0.5 [INFO] [stderr] Checking notify v4.0.12 [INFO] [stderr] Checking float-cmp v0.4.0 [INFO] [stderr] Checking predicates v1.0.1 [INFO] [stderr] Checking console v0.7.5 [INFO] [stderr] Checking console v0.6.2 [INFO] [stderr] Checking indicatif v0.9.0 [INFO] [stderr] Compiling serde_derive v1.0.92 [INFO] [stderr] Checking serde v1.0.92 [INFO] [stderr] Checking serde_json v1.0.39 [INFO] [stderr] Checking toml v0.4.10 [INFO] [stderr] Checking rustlings v2.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking escargot v0.4.0 [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stdout] error[E0601]: `main` function not found in crate `test3` [INFO] [stdout] --> examples/test3.rs:10:1 [INFO] [stdout] | [INFO] [stdout] 10 | / pub fn times_two(num: i32) -> i32 { [INFO] [stdout] 11 | | num * 2 [INFO] [stdout] 12 | | } [INFO] [stdout] 13 | | [INFO] [stdout] ... | [INFO] [stdout] 26 | | } [INFO] [stdout] 27 | | } [INFO] [stdout] | |_^ consider adding a `main` function to `examples/test3.rs` [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 E0601`. [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> examples/test1.rs:12:29 [INFO] [stdout] | [INFO] [stdout] 12 | let price_per_item = if (quantity > 40) { 1 } else { 2 }; [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0601]: `main` function not found in crate `test1` [INFO] [stdout] --> examples/test1.rs:11:1 [INFO] [stdout] | [INFO] [stdout] 11 | / fn calculate_apple_price(quantity: i32) -> i32 { [INFO] [stdout] 12 | | let price_per_item = if (quantity > 40) { 1 } else { 2 }; [INFO] [stdout] 13 | | price_per_item * quantity [INFO] [stdout] 14 | | } [INFO] [stdout] ... | [INFO] [stdout] 27 | | assert_eq!(65, price2); [INFO] [stdout] 28 | | } [INFO] [stdout] | |_^ consider adding a `main` function to `examples/test1.rs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0601`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rustlings` [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: variant is never constructed: `Negative` [INFO] [stdout] --> examples/result1.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | Negative, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Zero` [INFO] [stdout] --> examples/result1.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | Zero, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> examples/result1.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | fn new(value: i64) -> Result { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> examples/errorsn.rs:113:49 [INFO] [stdout] | [INFO] [stdout] 113 | f.write_str((self as &dyn error::Error).description()) [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "38172a057d09c543ec2156c69ca7af0779cb9c4b3af82d9025a710b2f7f00a60", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "38172a057d09c543ec2156c69ca7af0779cb9c4b3af82d9025a710b2f7f00a60", kill_on_drop: false }` [INFO] [stdout] 38172a057d09c543ec2156c69ca7af0779cb9c4b3af82d9025a710b2f7f00a60