[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 try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flearnmerust%2FPractical-Introduction-to-Rust-workshop" "/workspace/builds/worker-3/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/learnmerust/Practical-Introduction-to-Rust-workshop on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "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-3/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2309fcfb201048fc666c5f312a5c490598b2d3a7f5eb448241e743a8a8d35c53 [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" "2309fcfb201048fc666c5f312a5c490598b2d3a7f5eb448241e743a8a8d35c53", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2309fcfb201048fc666c5f312a5c490598b2d3a7f5eb448241e743a8a8d35c53", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2309fcfb201048fc666c5f312a5c490598b2d3a7f5eb448241e743a8a8d35c53", kill_on_drop: false }` [INFO] [stdout] 2309fcfb201048fc666c5f312a5c490598b2d3a7f5eb448241e743a8a8d35c53 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cae80967cc5cad2202a334ed7df3f33231dce416927317e18f442c125ed84267 [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" "cae80967cc5cad2202a334ed7df3f33231dce416927317e18f442c125ed84267", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Checking futures v0.1.29 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling syn v1.0.11 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Checking either v1.5.3 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling serde v1.0.102 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Checking smallvec v1.0.0 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling getrandom v0.1.13 [INFO] [stderr] Checking itoa v0.4.4 [INFO] [stderr] Checking percent-encoding v1.0.1 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling ppv-lite86 v0.2.6 [INFO] [stderr] Checking rustc-demangle v0.1.16 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Checking regex-syntax v0.6.12 [INFO] [stderr] Compiling version_check v0.9.1 [INFO] [stderr] Compiling crc32fast v1.2.0 [INFO] [stderr] Checking copyless v0.1.4 [INFO] [stderr] Compiling encoding_rs v0.8.20 [INFO] [stderr] Checking dtoa v0.4.4 [INFO] [stderr] Checking quick-error v1.2.2 [INFO] [stderr] Checking arc-swap v0.4.4 [INFO] [stderr] Checking linked-hash-map v0.5.2 [INFO] [stderr] Checking adler32 v1.0.4 [INFO] [stderr] Compiling openssl v0.10.26 [INFO] [stderr] Checking mime v0.3.14 [INFO] [stderr] Checking foreign-types-shared v0.1.1 [INFO] [stderr] Checking try-lock v0.2.2 [INFO] [stderr] Compiling native-tls v0.2.3 [INFO] [stderr] Compiling askama_escape v0.2.0 [INFO] [stderr] Checking sha1 v0.6.0 [INFO] [stderr] Compiling humansize v1.1.0 [INFO] [stderr] Checking openssl-probe v0.1.2 [INFO] [stderr] Checking language-tags v0.2.2 [INFO] [stderr] Checking hashbrown v0.5.0 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Compiling backtrace-sys v0.1.32 [INFO] [stderr] Compiling miniz-sys v0.1.12 [INFO] [stderr] Compiling brotli-sys v0.3.2 [INFO] [stderr] Checking try_from v0.3.2 [INFO] [stderr] Checking lock_api v0.3.2 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking unicode-bidi v0.3.4 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking unicode-normalization v0.1.11 [INFO] [stderr] Compiling num-traits v0.2.10 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling crossbeam-utils v0.7.0 [INFO] [stderr] Compiling indexmap v1.3.0 [INFO] [stderr] Compiling openssl-sys v0.9.53 [INFO] [stderr] Compiling crossbeam-epoch v0.8.0 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Compiling hashbrown v0.6.3 [INFO] [stderr] Checking miniz_oxide v0.3.5 [INFO] [stderr] Checking foreign-types v0.3.2 [INFO] [stderr] Compiling error-chain v0.12.1 [INFO] [stderr] Compiling nom v4.2.3 [INFO] [stderr] Checking lru-cache v0.1.2 [INFO] [stderr] Compiling c2-chacha v0.2.3 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Compiling unicase v2.6.0 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking tokio-executor v0.1.9 [INFO] [stderr] Checking tokio-sync v0.1.7 [INFO] [stderr] Checking actix-service v0.4.2 [INFO] [stderr] Checking smallvec v0.6.13 [INFO] [stderr] Checking want v0.2.0 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Checking idna v0.2.0 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking aho-corasick v0.7.6 [INFO] [stderr] Checking tokio-timer v0.2.12 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling memoffset v0.5.3 [INFO] [stderr] Compiling hyper v0.12.35 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.11.1 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking socket2 v0.3.11 [INFO] [stderr] Checking hostname v0.1.5 [INFO] [stderr] Checking signal-hook-registry v1.2.0 [INFO] [stderr] Checking url v2.1.0 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Checking regex v1.3.1 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking backtrace v0.3.40 [INFO] [stderr] Checking threadpool v1.7.1 [INFO] [stderr] Checking futures-cpupool v0.1.8 [INFO] [stderr] Checking mio v0.6.21 [INFO] [stderr] Checking resolv-conf v0.6.2 [INFO] [stderr] Compiling mime_guess v2.0.1 [INFO] [stderr] Checking flate2 v1.0.13 [INFO] [stderr] Checking signal-hook v0.1.12 [INFO] [stderr] Compiling rand_chacha v0.2.1 [INFO] [stderr] Checking chrono v0.4.10 [INFO] [stderr] Checking cookie v0.12.0 [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] Compiling rand v0.7.2 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking publicsuffix v1.5.4 [INFO] [stderr] Checking tokio-reactor v0.1.11 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking crossbeam-deque v0.7.2 [INFO] [stderr] Checking uuid v0.7.4 [INFO] [stderr] Checking actix-codec v0.1.2 [INFO] [stderr] Checking tokio-threadpool v0.1.17 [INFO] [stderr] Checking actix-utils v0.4.7 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio-udp v0.1.5 [INFO] [stderr] Checking tokio-signal v0.2.7 [INFO] [stderr] Checking actix-server-config v0.1.2 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking brotli2 v0.3.2 [INFO] [stderr] Checking h2 v0.1.26 [INFO] [stderr] Checking http-body v0.1.0 [INFO] [stderr] Compiling derive_more v0.15.0 [INFO] [stderr] Compiling enum-as-inner v0.2.1 [INFO] [stderr] Compiling synstructure v0.12.3 [INFO] [stderr] Checking actix-threadpool v0.1.2 [INFO] [stderr] Checking actix-rt v0.2.6 [INFO] [stderr] Checking hyper-tls v0.3.2 [INFO] [stderr] Checking actix-server v0.6.1 [INFO] [stderr] Checking actix-testing v0.1.0 [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 failure v0.1.6 [INFO] [stderr] Checking trust-dns-proto v0.7.4 [INFO] [stderr] Compiling const-random-macro v0.1.6 [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_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] [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: 0x7f0d23db8bb0 - std::backtrace_rs::backtrace::libunwind::trace::h448c56741b6011d3 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5 [INFO] [stderr] 1: 0x7f0d23db8bb0 - std::backtrace_rs::backtrace::trace_unsynchronized::h881b9d30a8a89a0c [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x7f0d23db8bb0 - std::sys_common::backtrace::_print_fmt::h720a2f61f75b9f58 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x7f0d23db8bb0 - ::fmt::h8d62bbfda6d5c836 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x7f0d23e28b7c - core::fmt::write::h1857a60b204f1b6a [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/core/src/fmt/mod.rs:1076:17 [INFO] [stderr] 5: 0x7f0d23daa812 - std::io::Write::write_fmt::h16a9fe7680ac245c [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/io/mod.rs:1516:15 [INFO] [stderr] 6: 0x7f0d23dbdb65 - std::sys_common::backtrace::_print::h9ba51a6db618de7d [INFO] [stderr] thread 'rustc' panicked at 'Box', compiler/rustc_errors/src/lib.rs:945:9 [INFO] [stderr] stack backtrace: [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] 0: 0x7f817bf13bb0 - std::backtrace_rs::backtrace::libunwind::trace::h448c56741b6011d3 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5 [INFO] [stderr] 1: 0x7f817bf13bb0 - std::backtrace_rs::backtrace::trace_unsynchronized::h881b9d30a8a89a0c [INFO] [stderr] 7: 0x7f0d23dbdb65 - std::sys_common::backtrace::print::h5f20e41c85e91716 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x7f817bf13bb0 - std::sys_common::backtrace::_print_fmt::h720a2f61f75b9f58 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 3: 0x7f817bf13bb0 - ::fmt::h8d62bbfda6d5c836 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 8: 0x7f0d23dbdb65 - std::panicking::default_hook::{{closure}}::h8d48653392f3b04c [INFO] [stderr] 4: 0x7f817bf83b7c - core::fmt::write::h1857a60b204f1b6a [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/core/src/fmt/mod.rs:1076:17 [INFO] [stderr] 5: 0x7f817bf05812 - std::io::Write::write_fmt::h16a9fe7680ac245c [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/io/mod.rs:1516:15 [INFO] [stderr] 6: 0x7f817bf18b65 - std::sys_common::backtrace::_print::h9ba51a6db618de7d [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x7f817bf18b65 - std::sys_common::backtrace::print::h5f20e41c85e91716 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:208:50 [INFO] [stderr] 8: 0x7f817bf18b65 - std::panicking::default_hook::{{closure}}::h8d48653392f3b04c [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x7f0d23dbd808 - std::panicking::default_hook::hb3948d1f74b6ff4c [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:227:9 [INFO] [stderr] 9: 0x7f817bf18808 - std::panicking::default_hook::hb3948d1f74b6ff4c [INFO] [stderr] 10: 0x7f0d24684ca8 - rustc_driver::report_ice::h1ddbc5609a6e1f37 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:227:9 [INFO] [stderr] 11: 0x7f0d23dbe466 - std::panicking::rust_panic_with_hook::h55d23fef0ad751bc [INFO] [stderr] 10: 0x7f817c7dfca8 - rustc_driver::report_ice::h1ddbc5609a6e1f37 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:597:17 [INFO] [stderr] 11: 0x7f817bf19466 - std::panicking::rust_panic_with_hook::h55d23fef0ad751bc [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:597:17 [INFO] [stderr] 12: 0x7f0d2769a7ad - std::panicking::begin_panic::{{closure}}::h4b123e1d8e3ae463 [INFO] [stderr] 12: 0x7f817f7f57ad - std::panicking::begin_panic::{{closure}}::h4b123e1d8e3ae463 [INFO] [stderr] 13: 0x7f817f7f56e6 - std::sys_common::backtrace::__rust_end_short_backtrace::ha21fec08f03d728b [INFO] [stderr] 13: 0x7f0d2769a6e6 - std::sys_common::backtrace::__rust_end_short_backtrace::ha21fec08f03d728b [INFO] [stderr] 14: 0x7f0d2769a77f - std::panicking::begin_panic::hc0c81fab1e0acd00 [INFO] [stderr] 14: 0x7f817f7f577f - std::panicking::begin_panic::hc0c81fab1e0acd00 [INFO] [stderr] 15: 0x7f817f8076e0 - rustc_errors::HandlerInner::bug::h26f9bc1a7147687e [INFO] [stderr] 15: 0x7f0d276ac6e0 - rustc_errors::HandlerInner::bug::h26f9bc1a7147687e [INFO] [stderr] 16: 0x7f0d276ab230 - rustc_errors::Handler::bug::h2149bffe74600666 [INFO] [stderr] 16: 0x7f817f806230 - rustc_errors::Handler::bug::h2149bffe74600666 [INFO] [stderr] 17: 0x7f0d27109a94 - rustc_middle::util::bug::opt_span_bug_fmt::{{closure}}::hb4ddd0d3902006f3 [INFO] [stderr] 17: 0x7f817f264a94 - rustc_middle::util::bug::opt_span_bug_fmt::{{closure}}::hb4ddd0d3902006f3 [INFO] [stderr] 18: 0x7f817f25e2cb - rustc_middle::ty::context::tls::with_opt::{{closure}}::ha7f81bc36cab3c9f [INFO] [stderr] 18: 0x7f0d271032cb - rustc_middle::ty::context::tls::with_opt::{{closure}}::ha7f81bc36cab3c9f [INFO] [stderr] 19: 0x7f0d27102c82 - rustc_middle::ty::context::tls::with_opt::hf0c2c2aff96e53ba [INFO] [stderr] 20: 0x7f0d271099b9 - rustc_middle::util::bug::opt_span_bug_fmt::hc7cbb029c2646db9 [INFO] [stderr] 21: 0x7f0d2710992e - rustc_middle::util::bug::bug_fmt::hb51c412c48cda8bb [INFO] [stderr] 19: 0x7f817f25dc82 - rustc_middle::ty::context::tls::with_opt::hf0c2c2aff96e53ba [INFO] [stderr] 22: 0x7f0d272299f6 - rustc_middle::ty::sty::::tuple_fields::hcffd66056c4b0b40 [INFO] [stderr] 20: 0x7f817f2649b9 - rustc_middle::util::bug::opt_span_bug_fmt::hc7cbb029c2646db9 [INFO] [stderr] 21: 0x7f817f26492e - rustc_middle::util::bug::bug_fmt::hb51c412c48cda8bb [INFO] [stderr] 23: 0x7f0d269dd948 - rustc_trait_selection::traits::select::SelectionContext::copy_clone_conditions::h95882b20956e73e1 [INFO] [stderr] 22: 0x7f817f3849f6 - rustc_middle::ty::sty::::tuple_fields::hcffd66056c4b0b40 [INFO] [stderr] 24: 0x7f0d269d8ea1 - rustc_trait_selection::traits::select::candidate_assembly::::assemble_candidates::h54990b7b6affc102 [INFO] [stderr] 23: 0x7f817eb38948 - rustc_trait_selection::traits::select::SelectionContext::copy_clone_conditions::h95882b20956e73e1 [INFO] [stderr] 24: 0x7f817eb33ea1 - rustc_trait_selection::traits::select::candidate_assembly::::assemble_candidates::h54990b7b6affc102 [INFO] [stderr] 25: 0x7f817eb3229d - rustc_trait_selection::traits::select::candidate_assembly::::candidate_from_obligation_no_cache::ha99d83e20ddb8b6a [INFO] [stderr] 25: 0x7f0d269d729d - rustc_trait_selection::traits::select::candidate_assembly::::candidate_from_obligation_no_cache::ha99d83e20ddb8b6a [INFO] [stderr] 26: 0x7f0d269ecf19 - rustc_query_system::dep_graph::graph::DepGraph::with_anon_task::hffe7c4030ffea93a [INFO] [stderr] 26: 0x7f817eb47f19 - rustc_query_system::dep_graph::graph::DepGraph::with_anon_task::hffe7c4030ffea93a [INFO] [stderr] 27: 0x7f817eb3a232 - rustc_trait_selection::traits::select::candidate_assembly::::candidate_from_obligation::hfcfd3c271bd53aa9 [INFO] [stderr] 27: 0x7f0d269df232 - rustc_trait_selection::traits::select::candidate_assembly::::candidate_from_obligation::hfcfd3c271bd53aa9 [INFO] [stderr] 28: 0x7f817eb36e63 - rustc_trait_selection::traits::select::SelectionContext::evaluate_stack::h4ad24a0bed665604 [INFO] [stderr] 28: 0x7f0d269dbe63 - rustc_trait_selection::traits::select::SelectionContext::evaluate_stack::h4ad24a0bed665604 [INFO] [stderr] 29: 0x7f0d269eb150 - rustc_query_system::dep_graph::graph::DepGraph::with_anon_task::hba94b248f9424a51 [INFO] [stderr] 29: 0x7f817eb46150 - rustc_query_system::dep_graph::graph::DepGraph::with_anon_task::hba94b248f9424a51 [INFO] [stderr] 30: 0x7f817eb36444 - rustc_trait_selection::traits::select::SelectionContext::evaluate_trait_predicate_recursively::h9133d2ec84e07cb7 [INFO] [stderr] 30: 0x7f0d269db444 - rustc_trait_selection::traits::select::SelectionContext::evaluate_trait_predicate_recursively::h9133d2ec84e07cb7 [INFO] [stderr] 31: 0x7f0d26b9a936 - rustc_trait_selection::traits::select::SelectionContext::evaluate_predicate_recursively::{{closure}}::hfeffc9d35f96e5e2 [INFO] [stderr] 31: 0x7f817ecf5936 - rustc_trait_selection::traits::select::SelectionContext::evaluate_predicate_recursively::{{closure}}::hfeffc9d35f96e5e2 [INFO] [stderr] 32: 0x7f0d269e573e - rustc_trait_selection::traits::select::SelectionContext::evaluate_predicate_recursively::ha94c0345657d01a6 [INFO] [stderr] 32: 0x7f817eb4073e - rustc_trait_selection::traits::select::SelectionContext::evaluate_predicate_recursively::ha94c0345657d01a6 [INFO] [stderr] 33: 0x7f0d269aab84 - rustc_infer::infer::InferCtxt::probe::hc7ac934f95713179 [INFO] [stderr] 33: 0x7f817eb05b84 - rustc_infer::infer::InferCtxt::probe::hc7ac934f95713179 [INFO] [stderr] 34: 0x7f817eb35a40 - rustc_trait_selection::traits::select::SelectionContext::evaluate_root_obligation::ha7df528801dc1d6e [INFO] [stderr] 34: 0x7f0d269daa40 - rustc_trait_selection::traits::select::SelectionContext::evaluate_root_obligation::ha7df528801dc1d6e [INFO] [stderr] 35: 0x7f0d24d4be16 - rustc_infer::infer::InferCtxtBuilder::enter_with_canonical::h7af0d1e7f72f5920 [INFO] [stderr] 35: 0x7f817cea6e16 - rustc_infer::infer::InferCtxtBuilder::enter_with_canonical::h7af0d1e7f72f5920 [INFO] [stderr] 36: 0x7f0d24db962b - rustc_traits::evaluate_obligation::evaluate_obligation::hbba655fd524cb538 [INFO] [stderr] 37: 0x7f0d269b0cfd - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::evaluate_obligation>::compute::h74e4853d136e0e79 [INFO] [stderr] 36: 0x7f817cf1462b - rustc_traits::evaluate_obligation::evaluate_obligation::hbba655fd524cb538 [INFO] [stderr] 38: 0x7f0d269f2ba9 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h59eddc515be1fa17 [INFO] [stderr] 37: 0x7f817eb0bcfd - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::evaluate_obligation>::compute::h74e4853d136e0e79 [INFO] [stderr] 38: 0x7f817eb4dba9 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h59eddc515be1fa17 [INFO] [stderr] 39: 0x7f0d26b5dc60 - rustc_middle::ty::query::plumbing::::start_query::{{closure}}::{{closure}}::{{closure}}::h26e1479b297dbecb [INFO] [stderr] 39: 0x7f817ecb8c60 - rustc_middle::ty::query::plumbing::::start_query::{{closure}}::{{closure}}::{{closure}}::h26e1479b297dbecb [INFO] [stderr] 40: 0x7f0d26b33c77 - rustc_query_system::query::plumbing::get_query_impl::hc1eb4259b8d6f99b [INFO] [stderr] 40: 0x7f817ec8ec77 - rustc_query_system::query::plumbing::get_query_impl::hc1eb4259b8d6f99b [INFO] [stderr] 41: 0x7f0d269d2eee - ::evaluate_obligation::hfb4c8f6b80a9a72c [INFO] [stderr] 42: 0x7f0d269d2f8d - ::evaluate_obligation_no_overflow::haee136c42e20a21a [INFO] [stderr] 41: 0x7f817eb2deee - ::evaluate_obligation::hfb4c8f6b80a9a72c [INFO] [stderr] 43: 0x7f0d26b99ab1 - rustc_trait_selection::traits::fulfill::FulfillProcessor::process_trait_obligation::h6e2582ade205c427 [INFO] [stderr] 44: 0x7f0d26b98552 - rustc_trait_selection::traits::fulfill::FulfillProcessor::progress_changed_obligations::h84d4f4036c390b92 [INFO] [stderr] 45: 0x7f0d26b97039 - ::select_where_possible::ha298a8db0ffb7554 [INFO] [stderr] 42: 0x7f817eb2df8d - ::evaluate_obligation_no_overflow::haee136c42e20a21a [INFO] [stderr] 43: 0x7f817ecf4ab1 - rustc_trait_selection::traits::fulfill::FulfillProcessor::process_trait_obligation::h6e2582ade205c427 [INFO] [stderr] 44: 0x7f817ecf3552 - rustc_trait_selection::traits::fulfill::FulfillProcessor::progress_changed_obligations::h84d4f4036c390b92 [INFO] [stderr] 45: 0x7f817ecf2039 - ::select_where_possible::ha298a8db0ffb7554 [INFO] [stderr] 46: 0x7f0d250cb3a4 - rustc_typeck::check::fn_ctxt::_impl::::select_obligations_where_possible::h339e1aeff9ff972f [INFO] [stderr] 47: 0x7f0d2533c667 - rustc_infer::infer::InferCtxtBuilder::enter::h33c2ca6d940255f7 [INFO] [stderr] 46: 0x7f817d2263a4 - rustc_typeck::check::fn_ctxt::_impl::::select_obligations_where_possible::h339e1aeff9ff972f [INFO] [stderr] 48: 0x7f0d253d41d8 - rustc_typeck::check::typeck::hf5dca34d9f9397ea [INFO] [stderr] 49: 0x7f0d252d8e3e - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::typeck>::compute::ha973184fc8dc7d94 [INFO] [stderr] 47: 0x7f817d497667 - rustc_infer::infer::InferCtxtBuilder::enter::h33c2ca6d940255f7 [INFO] [stderr] 50: 0x7f0d252ad377 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::hc027a840dd86dc2b [INFO] [stderr] 48: 0x7f817d52f1d8 - rustc_typeck::check::typeck::hf5dca34d9f9397ea [INFO] [stderr] 51: 0x7f0d2521cb11 - rustc_data_structures::stack::ensure_sufficient_stack::hf8ac0ee6e6d9e0cc [INFO] [stderr] 52: 0x7f0d251673e9 - rustc_query_system::query::plumbing::get_query_impl::hd518b5d289bc5ebe [INFO] [stderr] 53: 0x7f0d2517972d - rustc_query_system::query::plumbing::ensure_query_impl::h8c27cccc682009bd [INFO] [stderr] 54: 0x7f0d253d8c46 - rustc_typeck::check::typeck_item_bodies::h7810afe0eebc0ace [INFO] [stderr] 49: 0x7f817d433e3e - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::typeck>::compute::ha973184fc8dc7d94 [INFO] [stderr] 50: 0x7f817d408377 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::hc027a840dd86dc2b [INFO] [stderr] 55: 0x7f0d2528f6fe - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::typeck_item_bodies>::compute::he1ffffeb527b8ab1 [INFO] [stderr] 51: 0x7f817d377b11 - rustc_data_structures::stack::ensure_sufficient_stack::hf8ac0ee6e6d9e0cc [INFO] [stderr] 56: 0x7f0d252a0307 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h0a5806e1468823aa [INFO] [stderr] 57: 0x7f0d2520f984 - rustc_data_structures::stack::ensure_sufficient_stack::h082de47c7a123405 [INFO] [stderr] 52: 0x7f817d2c23e9 - rustc_query_system::query::plumbing::get_query_impl::hd518b5d289bc5ebe [INFO] [stderr] 58: 0x7f0d2513a8e5 - rustc_query_system::query::plumbing::get_query_impl::h71b962d7012c4a42 [INFO] [stderr] 59: 0x7f0d252f8d93 - rustc_typeck::check_crate::he6ac80d39108f9c5 [INFO] [stderr] 53: 0x7f817d2d472d - rustc_query_system::query::plumbing::ensure_query_impl::h8c27cccc682009bd [INFO] [stderr] 60: 0x7f0d248d5e8e - rustc_interface::passes::analysis::h78326215bfd650a0 [INFO] [stderr] 54: 0x7f817d533c46 - rustc_typeck::check::typeck_item_bodies::h7810afe0eebc0ace [INFO] [stderr] 61: 0x7f0d246c2b6b - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::analysis>::compute::hf8d4bc54d08537f3 [INFO] [stderr] 62: 0x7f0d246a37f7 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h6d03accb53ed1239 [INFO] [stderr] 55: 0x7f817d3ea6fe - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::typeck_item_bodies>::compute::he1ffffeb527b8ab1 [INFO] [stderr] 56: 0x7f817d3fb307 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h0a5806e1468823aa [INFO] [stderr] 63: 0x7f0d246a030f - rustc_middle::ty::query::plumbing::::start_query::{{closure}}::{{closure}}::{{closure}}::h947bb326d17d8606 [INFO] [stderr] 64: 0x7f0d2462d100 - rustc_query_system::query::plumbing::get_query_impl::h448d10ab90370983 [INFO] [stderr] 57: 0x7f817d36a984 - rustc_data_structures::stack::ensure_sufficient_stack::h082de47c7a123405 [INFO] [stderr] 65: 0x7f0d246c5acf - rustc_interface::passes::QueryContext::enter::hbf7a36e966e91449 [INFO] [stderr] 58: 0x7f817d2958e5 - rustc_query_system::query::plumbing::get_query_impl::h71b962d7012c4a42 [INFO] [stderr] 66: 0x7f0d246a179e - rustc_interface::queries::::enter::h25b522245624a405 [INFO] [stderr] 67: 0x7f0d24664eaf - rustc_span::with_source_map::h7455fffe3cd153a4 [INFO] [stderr] 68: 0x7f0d2469cc81 - scoped_tls::ScopedKey::set::h8ae8151712a551fd [INFO] [stderr] 59: 0x7f817d453d93 - rustc_typeck::check_crate::he6ac80d39108f9c5 [INFO] [stderr] 69: 0x7f0d246a7045 - std::sys_common::backtrace::__rust_begin_short_backtrace::h26de371bc27662fc [INFO] [stderr] 70: 0x7f0d24625fde - core::ops::function::FnOnce::call_once{{vtable.shim}}::hd5b48297ec15d5af [INFO] [stderr] 60: 0x7f817ca30e8e - rustc_interface::passes::analysis::h78326215bfd650a0 [INFO] [stderr] 71: 0x7f0d23dcd46a - as core::ops::function::FnOnce>::call_once::h1ca3bb61791b1789 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/alloc/src/boxed.rs:1042:9 [INFO] [stderr] 72: 0x7f0d23dcd46a - as core::ops::function::FnOnce>::call_once::hd0f9fedfd5cf45f8 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/alloc/src/boxed.rs:1042:9 [INFO] [stderr] 73: 0x7f0d23dcd46a - std::sys::unix::thread::Thread::new::thread_start::h35d2b8d36f210d02 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys/unix/thread.rs:89:17 [INFO] [stderr] 74: 0x7f0d23ce8609 - start_thread [INFO] [stderr] 75: 0x7f0d23bfc103 - 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 (b2c2190fa 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] 61: 0x7f817c81db6b - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::analysis>::compute::hf8d4bc54d08537f3 [INFO] [stderr] 62: 0x7f817c7fe7f7 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h6d03accb53ed1239 [INFO] [stderr] 63: 0x7f817c7fb30f - rustc_middle::ty::query::plumbing::::start_query::{{closure}}::{{closure}}::{{closure}}::h947bb326d17d8606 [INFO] [stderr] 64: 0x7f817c788100 - rustc_query_system::query::plumbing::get_query_impl::h448d10ab90370983 [INFO] [stderr] 65: 0x7f817c820acf - rustc_interface::passes::QueryContext::enter::hbf7a36e966e91449 [INFO] [stderr] 66: 0x7f817c7fc79e - rustc_interface::queries::::enter::h25b522245624a405 [INFO] [stderr] 67: 0x7f817c7bfeaf - rustc_span::with_source_map::h7455fffe3cd153a4 [INFO] [stderr] 68: 0x7f817c7f7c81 - scoped_tls::ScopedKey::set::h8ae8151712a551fd [INFO] [stderr] 69: 0x7f817c802045 - std::sys_common::backtrace::__rust_begin_short_backtrace::h26de371bc27662fc [INFO] [stderr] 70: 0x7f817c780fde - core::ops::function::FnOnce::call_once{{vtable.shim}}::hd5b48297ec15d5af [INFO] [stderr] 71: 0x7f817bf2846a - as core::ops::function::FnOnce>::call_once::h1ca3bb61791b1789 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/alloc/src/boxed.rs:1042:9 [INFO] [stderr] 72: 0x7f817bf2846a - as core::ops::function::FnOnce>::call_once::hd0f9fedfd5cf45f8 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/alloc/src/boxed.rs:1042:9 [INFO] [stderr] 73: 0x7f817bf2846a - std::sys::unix::thread::Thread::new::thread_start::h35d2b8d36f210d02 [INFO] [stderr] at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys/unix/thread.rs:89:17 [INFO] [stderr] #0 [evaluate_obligation] evaluating trait selection obligation `[closure@src/main.rs:18:21: 22:6]: std::clone::Clone` [INFO] [stderr] 74: 0x7f817be43609 - start_thread [INFO] [stderr] 75: 0x7f817bd57103 - 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 (b2c2190fa 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] #1 [typeck] type-checking `main` [INFO] [stderr] #2 [typeck_item_bodies] type-checking all item bodies [INFO] [stderr] note: some of the compiler flags provided by cargo are hidden [INFO] [stderr] [INFO] [stderr] query stack during panic: [INFO] [stderr] #3 [analysis] running analysis passes on this crate [INFO] [stderr] end of query stack [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] [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] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "cae80967cc5cad2202a334ed7df3f33231dce416927317e18f442c125ed84267", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cae80967cc5cad2202a334ed7df3f33231dce416927317e18f442c125ed84267", kill_on_drop: false }` [INFO] [stdout] cae80967cc5cad2202a334ed7df3f33231dce416927317e18f442c125ed84267