[INFO] cloning repository https://github.com/learnmerust/Practical-Introduction-to-Rust-workshop [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/learnmerust/Practical-Introduction-to-Rust-workshop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flearnmerust%2FPractical-Introduction-to-Rust-workshop", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flearnmerust%2FPractical-Introduction-to-Rust-workshop'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7d2c6e9f3965799528febe033009d0ca161739d3 [INFO] checking learnmerust/Practical-Introduction-to-Rust-workshop against master#0dce3f606e05cffab7361c132a399d3550ab0df8 for pr-78376 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flearnmerust%2FPractical-Introduction-to-Rust-workshop" "/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/learnmerust/Practical-Introduction-to-Rust-workshop on toolchain 0dce3f606e05cffab7361c132a399d3550ab0df8 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/learnmerust/Practical-Introduction-to-Rust-workshop [INFO] finished tweaking git repo https://github.com/learnmerust/Practical-Introduction-to-Rust-workshop [INFO] tweaked toml for git repo https://github.com/learnmerust/Practical-Introduction-to-Rust-workshop written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/learnmerust/Practical-Introduction-to-Rust-workshop already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [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" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "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] ca6ae5b3ca705980fd89b3ec407b4bf51e00faa46cbd4aaf764e6666d6b02fae [INFO] running `Command { std: "docker" "start" "-a" "ca6ae5b3ca705980fd89b3ec407b4bf51e00faa46cbd4aaf764e6666d6b02fae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ca6ae5b3ca705980fd89b3ec407b4bf51e00faa46cbd4aaf764e6666d6b02fae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ca6ae5b3ca705980fd89b3ec407b4bf51e00faa46cbd4aaf764e6666d6b02fae", kill_on_drop: false }` [INFO] [stdout] ca6ae5b3ca705980fd89b3ec407b4bf51e00faa46cbd4aaf764e6666d6b02fae [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" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 207c74bef939de6ec6453788a2063c27c79ef644dd06627a7f8a493216c28ffb [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" "207c74bef939de6ec6453788a2063c27c79ef644dd06627a7f8a493216c28ffb", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.11 [INFO] [stderr] Checking smallvec v1.0.0 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling ppv-lite86 v0.2.6 [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling ryu v1.0.2 [INFO] [stderr] Compiling version_check v0.9.1 [INFO] [stderr] Checking arc-swap v0.4.4 [INFO] [stderr] Compiling openssl v0.10.26 [INFO] [stderr] Compiling humansize v1.1.0 [INFO] [stderr] Compiling askama_escape v0.2.0 [INFO] [stderr] Checking lock_api v0.3.2 [INFO] [stderr] Compiling backtrace-sys v0.1.32 [INFO] [stderr] Compiling num-traits v0.2.10 [INFO] [stderr] Compiling crossbeam-utils v0.7.0 [INFO] [stderr] Compiling crossbeam-epoch v0.8.0 [INFO] [stderr] Compiling miniz-sys v0.1.12 [INFO] [stderr] Compiling brotli-sys v0.3.2 [INFO] [stderr] 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[INFO] [stderr] Checking resolv-conf v0.6.2 [INFO] [stderr] Compiling error-chain v0.12.1 [INFO] [stderr] Compiling nom v4.2.3 [INFO] [stderr] Compiling unicase v2.6.0 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand v0.6.5 [INFO] [stderr] Checking mio v0.6.21 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking signal-hook v0.1.12 [INFO] [stderr] Checking parking_lot_core v0.6.2 [INFO] [stderr] Compiling openssl-sys v0.9.53 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking http v0.1.21 [INFO] [stderr] Checking string v0.2.1 [INFO] [stderr] Checking tokio-buf v0.1.1 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Checking idna v0.2.0 [INFO] [stderr] Checking flate2 v1.0.13 [INFO] [stderr] Checking parking_lot v0.9.0 [INFO] [stderr] Checking rand v0.7.2 [INFO] [stderr] Checking backtrace v0.3.40 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] 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derive_more v0.15.0 [INFO] [stderr] Compiling enum-as-inner v0.2.1 [INFO] [stderr] Compiling synstructure v0.12.3 [INFO] [stderr] Checking hyper-tls v0.3.2 [INFO] [stderr] Compiling serde_derive v1.0.103 [INFO] [stderr] Compiling failure_derive v0.1.6 [INFO] [stderr] Compiling proc-macro-hack v0.5.11 [INFO] [stderr] Compiling actix-web-codegen v0.1.3 [INFO] [stderr] Checking actix-threadpool v0.1.2 [INFO] [stderr] Checking actix-rt v0.2.6 [INFO] [stderr] Checking failure v0.1.6 [INFO] [stderr] Checking actix-server v0.6.1 [INFO] [stderr] Checking trust-dns-proto v0.7.4 [INFO] [stderr] Compiling const-random-macro v0.1.6 [INFO] [stderr] Checking actix-testing v0.1.0 [INFO] [stderr] Checking const-random v0.1.6 [INFO] [stderr] Checking ahash v0.2.18 [INFO] [stderr] Checking trust-dns-resolver v0.11.1 [INFO] [stderr] Checking actix-connect v0.2.5 [INFO] [stderr] Checking serde v1.0.102 [INFO] [stderr] Checking serde_json v1.0.41 [INFO] [stderr] Checking serde_urlencoded v0.6.1 [INFO] [stderr] Checking toml v0.4.10 [INFO] [stderr] Checking actix-router v0.1.5 [INFO] [stderr] Checking serde_urlencoded v0.5.5 [INFO] [stderr] Checking askama_shared v0.8.0 [INFO] [stderr] Checking actix-http v0.2.11 [INFO] [stderr] Checking cookie_store v0.7.0 [INFO] [stderr] Checking reqwest v0.9.22 [INFO] [stderr] Compiling askama_derive v0.8.0 [INFO] [stderr] Checking awc v0.2.8 [INFO] [stderr] Checking actix-web v1.0.8 [INFO] [stderr] Checking askama v0.8.0 [INFO] [stderr] Checking rust-workshop-demo v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `client` [INFO] [stdout] --> src/main.rs:1:39 [INFO] [stdout] | [INFO] [stdout] 1 | use actix_web::{web, App, HttpServer, client}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `client` [INFO] [stdout] --> src/main.rs:1:39 [INFO] [stdout] | [INFO] [stdout] 1 | use actix_web::{web, App, HttpServer, client}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/main.rs:9:40 [INFO] [stdout] | [INFO] [stdout] 9 | fn index(data: web::Data) -> String { [INFO] [stdout] | ----- ^^^^^^ expected struct `String`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] 10 | format!("{}", data.intro); [INFO] [stdout] | - help: consider removing this semicolon [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/main.rs:9:40 [INFO] [stdout] | [INFO] [stdout] 9 | fn index(data: web::Data) -> String { [INFO] [stdout] | ----- ^^^^^^ expected struct `String`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] 10 | format!("{}", data.intro); [INFO] [stdout] | - help: consider removing this semicolon [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/main.rs:15:16 [INFO] [stdout] | [INFO] [stdout] 15 | intro: INTRO, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | expected struct `String`, found `&str` [INFO] [stdout] | help: try using a conversion method: `INTRO.to_string()` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] thread 'rustc' panicked at 'Box', compiler/rustc_errors/src/lib.rs:945:9 [INFO] [stdout] error: internal compiler error: compiler/rustc_middle/src/ty/sty.rs:2150:18: tuple_fields called on non-tuple [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7f0dd474bbb0 - std::backtrace_rs::backtrace::libunwind::trace::h448c56741b6011d3 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5 [INFO] [stderr] 1: 0x7f0dd474bbb0 - std::backtrace_rs::backtrace::trace_unsynchronized::h881b9d30a8a89a0c [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x7f0dd474bbb0 - std::sys_common::backtrace::_print_fmt::h720a2f61f75b9f58 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x7f0dd474bbb0 - ::fmt::h8d62bbfda6d5c836 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x7f0dd47bbb7c - core::fmt::write::h1857a60b204f1b6a [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/core/src/fmt/mod.rs:1076:17 [INFO] [stderr] 5: 0x7f0dd473d812 - std::io::Write::write_fmt::h16a9fe7680ac245c [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/io/mod.rs:1516:15 [INFO] [stderr] 6: 0x7f0dd4750b65 - std::sys_common::backtrace::_print::h9ba51a6db618de7d [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x7f0dd4750b65 - std::sys_common::backtrace::print::h5f20e41c85e91716 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x7f0dd4750b65 - std::panicking::default_hook::{{closure}}::h8d48653392f3b04c [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x7f0dd4750808 - std::panicking::default_hook::hb3948d1f74b6ff4c [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:227:9 [INFO] [stderr] 10: 0x7f0dd5017bb8 - rustc_driver::report_ice::h1ddbc5609a6e1f37 [INFO] [stderr] 11: 0x7f0dd4751466 - std::panicking::rust_panic_with_hook::h55d23fef0ad751bc [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:597:17 [INFO] [stderr] 12: 0x7f0dd802da2d - std::panicking::begin_panic::{{closure}}::h4b123e1d8e3ae463 [INFO] [stderr] 13: 0x7f0dd802d966 - std::sys_common::backtrace::__rust_end_short_backtrace::ha21fec08f03d728b [INFO] [stderr] 14: 0x7f0dd802d9ff - std::panicking::begin_panic::hc0c81fab1e0acd00 [INFO] [stderr] 15: 0x7f0dd803f960 - rustc_errors::HandlerInner::bug::h26f9bc1a7147687e [INFO] [stderr] 16: 0x7f0dd803e4b0 - rustc_errors::Handler::bug::h2149bffe74600666 [INFO] [stderr] 17: 0x7f0dd7a9cd14 - rustc_middle::util::bug::opt_span_bug_fmt::{{closure}}::hb4ddd0d3902006f3 [INFO] [stderr] 18: 0x7f0dd7a9654b - rustc_middle::ty::context::tls::with_opt::{{closure}}::ha7f81bc36cab3c9f [INFO] [stderr] 19: 0x7f0dd7a95f02 - rustc_middle::ty::context::tls::with_opt::hf0c2c2aff96e53ba [INFO] [stderr] 20: 0x7f0dd7a9cc39 - rustc_middle::util::bug::opt_span_bug_fmt::hc7cbb029c2646db9 [INFO] [stderr] 21: 0x7f0dd7a9cbae - rustc_middle::util::bug::bug_fmt::hb51c412c48cda8bb [INFO] [stderr] 22: 0x7f0dd7bbcc76 - rustc_middle::ty::sty::::tuple_fields::hcffd66056c4b0b40 [INFO] [stderr] 23: 0x7f0dd7370bc8 - rustc_trait_selection::traits::select::SelectionContext::copy_clone_conditions::h95882b20956e73e1 [INFO] [stderr] 24: 0x7f0dd736c121 - rustc_trait_selection::traits::select::candidate_assembly::::assemble_candidates::h54990b7b6affc102 [INFO] [stderr] 25: 0x7f0dd736a51d - rustc_trait_selection::traits::select::candidate_assembly::::candidate_from_obligation_no_cache::ha99d83e20ddb8b6a [INFO] [stderr] 26: 0x7f0dd7380199 - rustc_query_system::dep_graph::graph::DepGraph::with_anon_task::hffe7c4030ffea93a [INFO] [stderr] 27: 0x7f0dd73724b2 - rustc_trait_selection::traits::select::candidate_assembly::::candidate_from_obligation::hfcfd3c271bd53aa9 [INFO] [stderr] 28: 0x7f0dd736f0e3 - rustc_trait_selection::traits::select::SelectionContext::evaluate_stack::h4ad24a0bed665604 [INFO] [stderr] 29: 0x7f0dd737e3d0 - rustc_query_system::dep_graph::graph::DepGraph::with_anon_task::hba94b248f9424a51 [INFO] [stderr] 30: 0x7f0dd736e6c4 - rustc_trait_selection::traits::select::SelectionContext::evaluate_trait_predicate_recursively::h9133d2ec84e07cb7 [INFO] [stderr] 31: 0x7f0dd752dbb6 - rustc_trait_selection::traits::select::SelectionContext::evaluate_predicate_recursively::{{closure}}::hfeffc9d35f96e5e2 [INFO] [stderr] 32: 0x7f0dd73789be - rustc_trait_selection::traits::select::SelectionContext::evaluate_predicate_recursively::ha94c0345657d01a6 [INFO] [stderr] 33: 0x7f0dd733de04 - rustc_infer::infer::InferCtxt::probe::hc7ac934f95713179 [INFO] [stderr] 34: 0x7f0dd736dcc0 - rustc_trait_selection::traits::select::SelectionContext::evaluate_root_obligation::ha7df528801dc1d6e [INFO] [stderr] 35: 0x7f0dd56ded26 - rustc_infer::infer::InferCtxtBuilder::enter_with_canonical::h7af0d1e7f72f5920 [INFO] [stderr] 36: 0x7f0dd574c53b - rustc_traits::evaluate_obligation::evaluate_obligation::hbba655fd524cb538 [INFO] [stderr] 37: 0x7f0dd7343f7d - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::evaluate_obligation>::compute::h74e4853d136e0e79 [INFO] [stderr] 38: 0x7f0dd7385e29 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h59eddc515be1fa17 [INFO] [stderr] 39: 0x7f0dd74f0ee0 - rustc_middle::ty::query::plumbing::::start_query::{{closure}}::{{closure}}::{{closure}}::h26e1479b297dbecb [INFO] [stderr] 40: 0x7f0dd74c6ef7 - rustc_query_system::query::plumbing::get_query_impl::hc1eb4259b8d6f99b [INFO] [stderr] 41: 0x7f0dd736616e - ::evaluate_obligation::hfb4c8f6b80a9a72c [INFO] [stderr] 42: 0x7f0dd736620d - ::evaluate_obligation_no_overflow::haee136c42e20a21a [INFO] [stderr] 43: 0x7f0dd752cd31 - rustc_trait_selection::traits::fulfill::FulfillProcessor::process_trait_obligation::h6e2582ade205c427 [INFO] [stderr] 44: 0x7f0dd752b7d2 - rustc_trait_selection::traits::fulfill::FulfillProcessor::progress_changed_obligations::h84d4f4036c390b92 [INFO] [stderr] 45: 0x7f0dd752a2b9 - ::select_where_possible::ha298a8db0ffb7554 [INFO] [stderr] 46: 0x7f0dd5a5e2b4 - rustc_typeck::check::fn_ctxt::_impl::::select_obligations_where_possible::hc186df6cb0fd3d29 [INFO] [stderr] 47: 0x7f0dd5ccf577 - rustc_infer::infer::InferCtxtBuilder::enter::h33c2ca6d940255f7 [INFO] [stderr] 48: 0x7f0dd5d670e8 - rustc_typeck::check::typeck::hf5dca34d9f9397ea [INFO] [stderr] 49: 0x7f0dd5c6bd4e - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::typeck>::compute::ha973184fc8dc7d94 [INFO] [stderr] 50: 0x7f0dd5c40287 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::hc027a840dd86dc2b [INFO] [stderr] 51: 0x7f0dd5bafa21 - rustc_data_structures::stack::ensure_sufficient_stack::hf8ac0ee6e6d9e0cc [INFO] [stderr] 52: 0x7f0dd5afa2f9 - rustc_query_system::query::plumbing::get_query_impl::hd518b5d289bc5ebe [INFO] [stderr] 53: 0x7f0dd5b0c63d - rustc_query_system::query::plumbing::ensure_query_impl::h8c27cccc682009bd [INFO] [stderr] 54: 0x7f0dd5d6bb56 - rustc_typeck::check::typeck_item_bodies::h7810afe0eebc0ace [INFO] [stderr] 55: 0x7f0dd5c2260e - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::typeck_item_bodies>::compute::he1ffffeb527b8ab1 [INFO] [stderr] 56: 0x7f0dd5c33217 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h0a5806e1468823aa [INFO] [stderr] 57: 0x7f0dd5ba2894 - rustc_data_structures::stack::ensure_sufficient_stack::h082de47c7a123405 [INFO] [stderr] 58: 0x7f0dd5acd7f5 - rustc_query_system::query::plumbing::get_query_impl::h71b962d7012c4a42 [INFO] [stderr] 59: 0x7f0dd5c8bca3 - rustc_typeck::check_crate::he6ac80d39108f9c5 [INFO] [stderr] 60: 0x7f0dd5268d9e - rustc_interface::passes::analysis::h78326215bfd650a0 [INFO] [stderr] 61: 0x7f0dd5055a7b - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::analysis>::compute::hf8d4bc54d08537f3 [INFO] [stderr] 62: 0x7f0dd5036707 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h6d03accb53ed1239 [INFO] [stderr] 63: 0x7f0dd503321f - rustc_middle::ty::query::plumbing::::start_query::{{closure}}::{{closure}}::{{closure}}::h947bb326d17d8606 [INFO] [stderr] 64: 0x7f0dd4fc0010 - rustc_query_system::query::plumbing::get_query_impl::h448d10ab90370983 [INFO] [stderr] 65: 0x7f0dd50589df - rustc_interface::passes::QueryContext::enter::hbf7a36e966e91449 [INFO] [stderr] 66: 0x7f0dd50346ae - rustc_interface::queries::::enter::h25b522245624a405 [INFO] [stderr] 67: 0x7f0dd4ff7dbf - rustc_span::with_source_map::h7455fffe3cd153a4 [INFO] [stderr] 68: 0x7f0dd502fb91 - scoped_tls::ScopedKey::set::h8ae8151712a551fd [INFO] [stderr] 69: 0x7f0dd5039f55 - std::sys_common::backtrace::__rust_begin_short_backtrace::h26de371bc27662fc [INFO] [stderr] 70: 0x7f0dd4fb8eee - core::ops::function::FnOnce::call_once{{vtable.shim}}::hd5b48297ec15d5af [INFO] [stderr] 71: 0x7f0dd476046a - as core::ops::function::FnOnce>::call_once::h1ca3bb61791b1789 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/alloc/src/boxed.rs:1042:9 [INFO] [stderr] 72: 0x7f0dd476046a - as core::ops::function::FnOnce>::call_once::hd0f9fedfd5cf45f8 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/alloc/src/boxed.rs:1042:9 [INFO] [stderr] 73: 0x7f0dd476046a - std::sys::unix::thread::Thread::new::thread_start::h35d2b8d36f210d02 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys/unix/thread.rs:89:17 [INFO] [stderr] 74: 0x7f0dd467b609 - start_thread [INFO] [stderr] 75: 0x7f0dd458f103 - clone [INFO] [stderr] 76: 0x0 - [INFO] [stderr] [INFO] [stderr] note: the compiler unexpectedly panicked. this is a bug. [INFO] [stderr] [INFO] [stderr] note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md [INFO] [stderr] [INFO] [stderr] note: rustc 1.49.0-nightly (0dce3f606 2020-10-25) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: -C embed-bitcode=no -C debuginfo=2 --crate-type bin [INFO] [stderr] [INFO] [stderr] note: some of the compiler flags provided by cargo are hidden [INFO] [stderr] [INFO] [stderr] query stack during panic: [INFO] [stderr] #0 [evaluate_obligation] evaluating trait selection obligation `[closure@src/main.rs:18:21: 22:6]: std::clone::Clone` [INFO] [stderr] #1 [typeck] type-checking `main` [INFO] [stderr] #2 [typeck_item_bodies] type-checking all item bodies [INFO] [stderr] #3 [analysis] running analysis passes on this crate [INFO] [stderr] end of query stack [INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-workshop-demo` [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[E0308]: mismatched types [INFO] [stdout] --> src/main.rs:15:16 [INFO] [stdout] | [INFO] [stdout] 15 | intro: INTRO, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | expected struct `String`, found `&str` [INFO] [stdout] | help: try using a conversion method: `INTRO.to_string()` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: internal compiler error: compiler/rustc_middle/src/ty/sty.rs:2150:18: tuple_fields called on non-tuple [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] thread 'rustc' panicked at 'Box', compiler/rustc_errors/src/lib.rs:945:9 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7f2f7509bbb0 - std::backtrace_rs::backtrace::libunwind::trace::h448c56741b6011d3 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5 [INFO] [stderr] 1: 0x7f2f7509bbb0 - std::backtrace_rs::backtrace::trace_unsynchronized::h881b9d30a8a89a0c [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x7f2f7509bbb0 - std::sys_common::backtrace::_print_fmt::h720a2f61f75b9f58 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x7f2f7509bbb0 - ::fmt::h8d62bbfda6d5c836 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x7f2f7510bb7c - core::fmt::write::h1857a60b204f1b6a [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/core/src/fmt/mod.rs:1076:17 [INFO] [stderr] 5: 0x7f2f7508d812 - std::io::Write::write_fmt::h16a9fe7680ac245c [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/io/mod.rs:1516:15 [INFO] [stderr] 6: 0x7f2f750a0b65 - std::sys_common::backtrace::_print::h9ba51a6db618de7d [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x7f2f750a0b65 - std::sys_common::backtrace::print::h5f20e41c85e91716 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x7f2f750a0b65 - std::panicking::default_hook::{{closure}}::h8d48653392f3b04c [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x7f2f750a0808 - std::panicking::default_hook::hb3948d1f74b6ff4c [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:227:9 [INFO] [stderr] 10: 0x7f2f75967bb8 - rustc_driver::report_ice::h1ddbc5609a6e1f37 [INFO] [stderr] 11: 0x7f2f750a1466 - std::panicking::rust_panic_with_hook::h55d23fef0ad751bc [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:597:17 [INFO] [stderr] 12: 0x7f2f7897da2d - std::panicking::begin_panic::{{closure}}::h4b123e1d8e3ae463 [INFO] [stderr] 13: 0x7f2f7897d966 - std::sys_common::backtrace::__rust_end_short_backtrace::ha21fec08f03d728b [INFO] [stderr] 14: 0x7f2f7897d9ff - std::panicking::begin_panic::hc0c81fab1e0acd00 [INFO] [stderr] 15: 0x7f2f7898f960 - rustc_errors::HandlerInner::bug::h26f9bc1a7147687e [INFO] [stderr] 16: 0x7f2f7898e4b0 - rustc_errors::Handler::bug::h2149bffe74600666 [INFO] [stderr] 17: 0x7f2f783ecd14 - rustc_middle::util::bug::opt_span_bug_fmt::{{closure}}::hb4ddd0d3902006f3 [INFO] [stderr] 18: 0x7f2f783e654b - rustc_middle::ty::context::tls::with_opt::{{closure}}::ha7f81bc36cab3c9f [INFO] [stderr] 19: 0x7f2f783e5f02 - rustc_middle::ty::context::tls::with_opt::hf0c2c2aff96e53ba [INFO] [stderr] 20: 0x7f2f783ecc39 - rustc_middle::util::bug::opt_span_bug_fmt::hc7cbb029c2646db9 [INFO] [stderr] 21: 0x7f2f783ecbae - rustc_middle::util::bug::bug_fmt::hb51c412c48cda8bb [INFO] [stderr] 22: 0x7f2f7850cc76 - rustc_middle::ty::sty::::tuple_fields::hcffd66056c4b0b40 [INFO] [stderr] 23: 0x7f2f77cc0bc8 - rustc_trait_selection::traits::select::SelectionContext::copy_clone_conditions::h95882b20956e73e1 [INFO] [stderr] 24: 0x7f2f77cbc121 - rustc_trait_selection::traits::select::candidate_assembly::::assemble_candidates::h54990b7b6affc102 [INFO] [stderr] 25: 0x7f2f77cba51d - rustc_trait_selection::traits::select::candidate_assembly::::candidate_from_obligation_no_cache::ha99d83e20ddb8b6a [INFO] [stderr] 26: 0x7f2f77cd0199 - rustc_query_system::dep_graph::graph::DepGraph::with_anon_task::hffe7c4030ffea93a [INFO] [stderr] 27: 0x7f2f77cc24b2 - rustc_trait_selection::traits::select::candidate_assembly::::candidate_from_obligation::hfcfd3c271bd53aa9 [INFO] [stderr] 28: 0x7f2f77cbf0e3 - rustc_trait_selection::traits::select::SelectionContext::evaluate_stack::h4ad24a0bed665604 [INFO] [stderr] 29: 0x7f2f77cce3d0 - rustc_query_system::dep_graph::graph::DepGraph::with_anon_task::hba94b248f9424a51 [INFO] [stderr] 30: 0x7f2f77cbe6c4 - rustc_trait_selection::traits::select::SelectionContext::evaluate_trait_predicate_recursively::h9133d2ec84e07cb7 [INFO] [stderr] 31: 0x7f2f77e7dbb6 - rustc_trait_selection::traits::select::SelectionContext::evaluate_predicate_recursively::{{closure}}::hfeffc9d35f96e5e2 [INFO] [stderr] 32: 0x7f2f77cc89be - rustc_trait_selection::traits::select::SelectionContext::evaluate_predicate_recursively::ha94c0345657d01a6 [INFO] [stderr] 33: 0x7f2f77c8de04 - rustc_infer::infer::InferCtxt::probe::hc7ac934f95713179 [INFO] [stderr] 34: 0x7f2f77cbdcc0 - rustc_trait_selection::traits::select::SelectionContext::evaluate_root_obligation::ha7df528801dc1d6e [INFO] [stderr] 35: 0x7f2f7602ed26 - rustc_infer::infer::InferCtxtBuilder::enter_with_canonical::h7af0d1e7f72f5920 [INFO] [stderr] 36: 0x7f2f7609c53b - rustc_traits::evaluate_obligation::evaluate_obligation::hbba655fd524cb538 [INFO] [stderr] 37: 0x7f2f77c93f7d - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::evaluate_obligation>::compute::h74e4853d136e0e79 [INFO] [stderr] 38: 0x7f2f77cd5e29 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h59eddc515be1fa17 [INFO] [stderr] 39: 0x7f2f77e40ee0 - rustc_middle::ty::query::plumbing::::start_query::{{closure}}::{{closure}}::{{closure}}::h26e1479b297dbecb [INFO] [stderr] 40: 0x7f2f77e16ef7 - rustc_query_system::query::plumbing::get_query_impl::hc1eb4259b8d6f99b [INFO] [stderr] 41: 0x7f2f77cb616e - ::evaluate_obligation::hfb4c8f6b80a9a72c [INFO] [stderr] 42: 0x7f2f77cb620d - ::evaluate_obligation_no_overflow::haee136c42e20a21a [INFO] [stderr] 43: 0x7f2f77e7cd31 - rustc_trait_selection::traits::fulfill::FulfillProcessor::process_trait_obligation::h6e2582ade205c427 [INFO] [stderr] 44: 0x7f2f77e7b7d2 - rustc_trait_selection::traits::fulfill::FulfillProcessor::progress_changed_obligations::h84d4f4036c390b92 [INFO] [stderr] 45: 0x7f2f77e7a2b9 - ::select_where_possible::ha298a8db0ffb7554 [INFO] [stderr] 46: 0x7f2f763ae2b4 - rustc_typeck::check::fn_ctxt::_impl::::select_obligations_where_possible::hc186df6cb0fd3d29 [INFO] [stderr] 47: 0x7f2f7661f577 - rustc_infer::infer::InferCtxtBuilder::enter::h33c2ca6d940255f7 [INFO] [stderr] 48: 0x7f2f766b70e8 - rustc_typeck::check::typeck::hf5dca34d9f9397ea [INFO] [stderr] 49: 0x7f2f765bbd4e - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::typeck>::compute::ha973184fc8dc7d94 [INFO] [stderr] 50: 0x7f2f76590287 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::hc027a840dd86dc2b [INFO] [stderr] 51: 0x7f2f764ffa21 - rustc_data_structures::stack::ensure_sufficient_stack::hf8ac0ee6e6d9e0cc [INFO] [stderr] 52: 0x7f2f7644a2f9 - rustc_query_system::query::plumbing::get_query_impl::hd518b5d289bc5ebe [INFO] [stderr] 53: 0x7f2f7645c63d - rustc_query_system::query::plumbing::ensure_query_impl::h8c27cccc682009bd [INFO] [stderr] 54: 0x7f2f766bbb56 - rustc_typeck::check::typeck_item_bodies::h7810afe0eebc0ace [INFO] [stderr] 55: 0x7f2f7657260e - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::typeck_item_bodies>::compute::he1ffffeb527b8ab1 [INFO] [stderr] 56: 0x7f2f76583217 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h0a5806e1468823aa [INFO] [stderr] 57: 0x7f2f764f2894 - rustc_data_structures::stack::ensure_sufficient_stack::h082de47c7a123405 [INFO] [stderr] 58: 0x7f2f7641d7f5 - rustc_query_system::query::plumbing::get_query_impl::h71b962d7012c4a42 [INFO] [stderr] 59: 0x7f2f765dbca3 - rustc_typeck::check_crate::he6ac80d39108f9c5 [INFO] [stderr] 60: 0x7f2f75bb8d9e - rustc_interface::passes::analysis::h78326215bfd650a0 [INFO] [stderr] 61: 0x7f2f759a5a7b - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::analysis>::compute::hf8d4bc54d08537f3 [INFO] [stderr] 62: 0x7f2f75986707 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h6d03accb53ed1239 [INFO] [stderr] 63: 0x7f2f7598321f - rustc_middle::ty::query::plumbing::::start_query::{{closure}}::{{closure}}::{{closure}}::h947bb326d17d8606 [INFO] [stderr] 64: 0x7f2f75910010 - rustc_query_system::query::plumbing::get_query_impl::h448d10ab90370983 [INFO] [stderr] 65: 0x7f2f759a89df - rustc_interface::passes::QueryContext::enter::hbf7a36e966e91449 [INFO] [stderr] 66: 0x7f2f759846ae - rustc_interface::queries::::enter::h25b522245624a405 [INFO] [stderr] 67: 0x7f2f75947dbf - rustc_span::with_source_map::h7455fffe3cd153a4 [INFO] [stderr] 68: 0x7f2f7597fb91 - scoped_tls::ScopedKey::set::h8ae8151712a551fd [INFO] [stderr] 69: 0x7f2f75989f55 - std::sys_common::backtrace::__rust_begin_short_backtrace::h26de371bc27662fc [INFO] [stderr] 70: 0x7f2f75908eee - core::ops::function::FnOnce::call_once{{vtable.shim}}::hd5b48297ec15d5af [INFO] [stderr] 71: 0x7f2f750b046a - as core::ops::function::FnOnce>::call_once::h1ca3bb61791b1789 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/alloc/src/boxed.rs:1042:9 [INFO] [stderr] 72: 0x7f2f750b046a - as core::ops::function::FnOnce>::call_once::hd0f9fedfd5cf45f8 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/alloc/src/boxed.rs:1042:9 [INFO] [stderr] 73: 0x7f2f750b046a - std::sys::unix::thread::Thread::new::thread_start::h35d2b8d36f210d02 [INFO] [stderr] at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys/unix/thread.rs:89:17 [INFO] [stderr] 74: 0x7f2f74fcb609 - start_thread [INFO] [stderr] 75: 0x7f2f74edf103 - clone [INFO] [stderr] 76: 0x0 - [INFO] [stderr] [INFO] [stderr] note: the compiler unexpectedly panicked. this is a bug. [INFO] [stderr] [INFO] [stderr] note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md [INFO] [stderr] [INFO] [stderr] note: rustc 1.49.0-nightly (0dce3f606 2020-10-25) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: -C embed-bitcode=no -C debuginfo=2 [INFO] [stderr] [INFO] [stderr] note: some of the compiler flags provided by cargo are hidden [INFO] [stderr] [INFO] [stderr] query stack during panic: [INFO] [stderr] #0 [evaluate_obligation] evaluating trait selection obligation `[closure@src/main.rs:18:21: 22:6]: std::clone::Clone` [INFO] [stderr] #1 [typeck] type-checking `main` [INFO] [stderr] #2 [typeck_item_bodies] type-checking all item bodies [INFO] [stderr] #3 [analysis] running analysis passes on this crate [INFO] [stderr] end of query stack [INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "207c74bef939de6ec6453788a2063c27c79ef644dd06627a7f8a493216c28ffb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "207c74bef939de6ec6453788a2063c27c79ef644dd06627a7f8a493216c28ffb", kill_on_drop: false }` [INFO] [stdout] 207c74bef939de6ec6453788a2063c27c79ef644dd06627a7f8a493216c28ffb