[INFO] cloning repository https://github.com/khanra17/Rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/khanra17/Rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhanra17%2FRustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhanra17%2FRustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f491fd67ef52f360ceb3801a16ade543d28f962f [INFO] checking khanra17/Rustlings against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhanra17%2FRustlings" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/khanra17/Rustlings on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml [INFO] started tweaking git repo https://github.com/khanra17/Rustlings [INFO] finished tweaking git repo https://github.com/khanra17/Rustlings [INFO] tweaked toml for git repo https://github.com/khanra17/Rustlings written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/khanra17/Rustlings 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ea166b19dac9730dda4a295076285121aeafd5884f55f509d7913f2c7b573795 [INFO] running `Command { std: "docker" "start" "-a" "ea166b19dac9730dda4a295076285121aeafd5884f55f509d7913f2c7b573795", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ea166b19dac9730dda4a295076285121aeafd5884f55f509d7913f2c7b573795", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ea166b19dac9730dda4a295076285121aeafd5884f55f509d7913f2c7b573795", kill_on_drop: false }` [INFO] [stdout] ea166b19dac9730dda4a295076285121aeafd5884f55f509d7913f2c7b573795 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c907fc56b5f255c434000587f12f8b54e5f995af9fe27cc0b2a7871e9d13a338 [INFO] running `Command { std: "docker" "start" "-a" "c907fc56b5f255c434000587f12f8b54e5f995af9fe27cc0b2a7871e9d13a338", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] [stderr] Compiling proc-macro2 v1.0.49 [INFO] [stderr] Compiling quote v1.0.23 [INFO] [stderr] Compiling syn v1.0.107 [INFO] [stderr] Compiling unicode-ident v1.0.6 [INFO] [stderr] Compiling serde_derive v1.0.151 [INFO] [stderr] Compiling serde v1.0.151 [INFO] [stderr] Compiling log v0.4.17 [INFO] [stderr] Compiling serde_json v1.0.91 [INFO] [stderr] Checking itoa v1.0.5 [INFO] [stderr] Compiling escargot v0.5.7 [INFO] [stderr] Checking ryu v1.0.12 [INFO] [stderr] Checking once_cell v1.16.0 [INFO] [stderr] Compiling libc v0.2.139 [INFO] [stderr] Checking hello_macro v0.1.0 (/opt/rustwide/workdir/Macros/Procedural Macros/hello_macro) [INFO] [stderr] Checking loop_over_vector_with_iterators v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Iterators/Loop Over Vector With Iterators) [INFO] [stderr] Checking from_into v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Type Conversions/From Into) [INFO] [stderr] Checking asref_and_asmut v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Type Conversions/AsRef and AsMut) [INFO] [stderr] Checking count_progress v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Iterators/Count Progress) [INFO] [stderr] Checking box_task v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Smart Pointers/Box Task) [INFO] [stderr] Checking process_some_strings v0.1.0 (/opt/rustwide/workdir/Common Collections/Strings/Process Some Strings) [INFO] [stderr] Checking declaring_a_hashmap v0.1.0 (/opt/rustwide/workdir/Common Collections/Hashmaps/Fruits Delivery) [INFO] [stderr] Checking combine_traits v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Traits/Combine Traits) [INFO] [stderr] Checking count_typed_cells v0.1.0 (/opt/rustwide/workdir/Common Collections/Vectors/Count Typed Cells) [INFO] [stderr] Checking capitalize_first v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Iterators/Capitalize first) [INFO] [stderr] Checking license_it v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Traits/License It) [INFO] [stderr] Checking modifying_a_hashmap v0.1.0 (/opt/rustwide/workdir/Common Collections/Hashmaps/More Fruits) [INFO] [stderr] Checking trait_bound_syntax v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Traits/Trait Bound Syntax) [INFO] [stderr] Checking errors6 v0.1.0 (/opt/rustwide/workdir/Error Handling/Errors Primer/Custom Errors) [INFO] [stderr] Checking declaring_a_vector v0.1.0 (/opt/rustwide/workdir/Common Collections/Vectors/Create a Vector on Your Own) [INFO] [stderr] Checking fromstr v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Type Conversions/FromStr) [INFO] [stderr] Checking string_trait v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Traits/String Trait) [INFO] [stderr] Checking trim_a_string v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/The Slice Type/Trim a String) [INFO] [stderr] Checking using_as v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Type Conversions/Using As) [INFO] [stderr] Checking advanced_errors v0.1.0 (/opt/rustwide/workdir/Error Handling/Errors Primer/Advanced Errors) [INFO] [stderr] Checking loop_over_a_vector v0.1.0 (/opt/rustwide/workdir/Common Collections/Vectors/Loop Over a Vector) [INFO] [stderr] Checking compare_licenses v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Traits/Compare Licenses) [INFO] [stderr] Checking errors5 v0.1.0 (/opt/rustwide/workdir/Error Handling/Errors Primer/Multiple Errors) [INFO] [stderr] Checking add_conditions v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Conditions/Add Conditions) [INFO] [stderr] Checking vec_trait v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Traits/Vec Trait) [INFO] [stderr] Checking string_transformer v0.1.0 (/opt/rustwide/workdir/Common Collections/Strings/String Transformer) [INFO] [stderr] Checking build_team_scores_table v0.1.0 (/opt/rustwide/workdir/Common Collections/Hashmaps/Build Scores Table) [INFO] [stderr] Checking advanced_errors_2 v0.1.0 (/opt/rustwide/workdir/Error Handling/Errors Primer/Advanced Errors 2) [INFO] [stderr] Checking generics_in_structs v0.1.0 (/opt/rustwide/workdir/Generic Types, Traits, and Lifetime/Generic Data Types/Generics in Structs) [INFO] [stderr] Checking lamp_with_switchers v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Smart Pointers/Switch the Lamp) [INFO] [stderr] Checking try_from_into v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Type Conversions/Try From Into) [INFO] [stderr] Checking home_alone v0.1.0 (/opt/rustwide/workdir/Modules/Modules/Home Alone at Day X) [INFO] [stderr] Checking use_cow v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Smart Pointers/Use Cow) [INFO] [stderr] Checking workers_in_the_engine v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Smart Pointers/Workers in the Engine) [INFO] [stderr] Checking matching_result v0.1.0 (/opt/rustwide/workdir/Error Handling/Error Handling/Matching Result) [INFO] [stderr] Checking returning_result v0.1.0 (/opt/rustwide/workdir/Error Handling/Error Handling/Returning Result) [INFO] [stderr] Checking submodules v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Running and Organizing Tests/Submodules in Integration Tests) [INFO] [stderr] Checking times_two_tests v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Running and Organizing Tests/Times Two Tests) [INFO] [stderr] Checking optional_value v0.1.0 (/opt/rustwide/workdir/Common Collections/Options/Optional Value) [INFO] [stderr] Checking result1 v0.1.0 (/opt/rustwide/workdir/Error Handling/Errors Primer/Positive Nonzero Integer) [INFO] [stderr] Checking calculate_price v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables, Functions, and Conditions Test/Calculate Price) [INFO] [stderr] Checking use_option v0.1.0 (/opt/rustwide/workdir/Common Collections/Options/Use Option) [INFO] [stderr] Checking if_task v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Conditions/If Task) [INFO] [stderr] Checking integration_tests v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Running and Organizing Tests/Integration Tests) [INFO] [stderr] Checking iterator3 v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Iterators/Iterator) [INFO] [stderr] Checking iterators4 v0.1.0 (/opt/rustwide/workdir/Standard Library Types/Iterators/Factorial) [INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.49/src/lib.rs:92:30 [INFO] [stdout] | [INFO] [stdout] 92 | feature(proc_macro_span, proc_macro_span_shrink) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.49/src/lib.rs:92:30 [INFO] [stdout] | [INFO] [stdout] 92 | feature(proc_macro_span, proc_macro_span_shrink) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0635`. [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0635`. [INFO] [stdout] [INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "c907fc56b5f255c434000587f12f8b54e5f995af9fe27cc0b2a7871e9d13a338", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c907fc56b5f255c434000587f12f8b54e5f995af9fe27cc0b2a7871e9d13a338", kill_on_drop: false }` [INFO] [stdout] c907fc56b5f255c434000587f12f8b54e5f995af9fe27cc0b2a7871e9d13a338 [INFO] checking khanra17/Rustlings against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-4 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhanra17%2FRustlings" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/khanra17/Rustlings on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml [INFO] started tweaking git repo https://github.com/khanra17/Rustlings [INFO] finished tweaking git repo https://github.com/khanra17/Rustlings [INFO] tweaked toml for git repo https://github.com/khanra17/Rustlings written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/khanra17/Rustlings 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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9297e2c44bb1e7e38e3bf22b61a9b5590eb3daa92d6a648166c884c5ccf3f3fc [INFO] running `Command { std: "docker" "start" "-a" "9297e2c44bb1e7e38e3bf22b61a9b5590eb3daa92d6a648166c884c5ccf3f3fc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9297e2c44bb1e7e38e3bf22b61a9b5590eb3daa92d6a648166c884c5ccf3f3fc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9297e2c44bb1e7e38e3bf22b61a9b5590eb3daa92d6a648166c884c5ccf3f3fc", kill_on_drop: false }` [INFO] [stdout] 9297e2c44bb1e7e38e3bf22b61a9b5590eb3daa92d6a648166c884c5ccf3f3fc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9321bab11f96e0a6d2007b00c040e2b78fca7b65f4e843519857a13c4ae105ce [INFO] running `Command { std: "docker" "start" "-a" "9321bab11f96e0a6d2007b00c040e2b78fca7b65f4e843519857a13c4ae105ce", kill_on_drop: false }` [INFO] [stderr] Copying to /tmp/fixit [INFO] [stderr] no edition found in manifest, probably 2015, skipping [INFO] running `Command { std: "docker" "inspect" "9321bab11f96e0a6d2007b00c040e2b78fca7b65f4e843519857a13c4ae105ce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9321bab11f96e0a6d2007b00c040e2b78fca7b65f4e843519857a13c4ae105ce", kill_on_drop: false }` [INFO] [stdout] 9321bab11f96e0a6d2007b00c040e2b78fca7b65f4e843519857a13c4ae105ce