[INFO] cloning repository https://github.com/yyklll/skeleton [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yyklll/skeleton" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyyklll%2Fskeleton", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyyklll%2Fskeleton'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 24eb82d118ce76281e35ed6f7deb89f355e4d8b3 [INFO] checking yyklll/skeleton against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyyklll%2Fskeleton" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/yyklll/skeleton on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/yyklll/skeleton [INFO] finished tweaking git repo https://github.com/yyklll/skeleton [INFO] tweaked toml for git repo https://github.com/yyklll/skeleton written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/yyklll/skeleton 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... 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"/var/lib/crater-agent-workspace/builds/worker-2-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b76484f8cbb5ec4d0ccf3bb4c555d8d738e0a74f3dcf6f970990a3cc1bdf656b [INFO] running `Command { std: "docker" "start" "-a" "b76484f8cbb5ec4d0ccf3bb4c555d8d738e0a74f3dcf6f970990a3cc1bdf656b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b76484f8cbb5ec4d0ccf3bb4c555d8d738e0a74f3dcf6f970990a3cc1bdf656b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b76484f8cbb5ec4d0ccf3bb4c555d8d738e0a74f3dcf6f970990a3cc1bdf656b", kill_on_drop: false }` [INFO] [stdout] b76484f8cbb5ec4d0ccf3bb4c555d8d738e0a74f3dcf6f970990a3cc1bdf656b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e8fb605d12460b95397087229b12385d470c70ad4af7743a1e42634686098d87 [INFO] running `Command { std: "docker" "start" "-a" "e8fb605d12460b95397087229b12385d470c70ad4af7743a1e42634686098d87", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Checking futures v0.1.29 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling proc-macro2 v1.0.5 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling arrayvec v0.4.11 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Checking nodrop v0.1.14 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Checking smallvec v0.6.10 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking lock_api v0.3.1 [INFO] [stderr] Checking iovec v0.1.3 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking num_cpus v1.10.1 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking parking_lot_core v0.6.2 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Compiling autocfg v0.1.6 [INFO] [stderr] Compiling serde v1.0.101 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking tokio-executor v0.1.8 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking tokio-sync v0.1.6 [INFO] [stderr] Checking parking_lot v0.9.0 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Compiling cc v1.0.45 [INFO] [stderr] Compiling ryu v1.0.0 [INFO] [stderr] Checking aho-corasick v0.7.6 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking tokio-reactor v0.1.10 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Checking regex-syntax v0.6.12 [INFO] [stderr] Compiling bitflags v1.2.0 [INFO] [stderr] Checking serde v0.8.23 [INFO] [stderr] Compiling nom v4.2.3 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Checking itoa v0.4.4 [INFO] [stderr] Compiling backtrace-sys v0.1.31 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Checking unicode-width v0.1.6 [INFO] [stderr] Compiling unicode-segmentation v1.3.0 [INFO] [stderr] Compiling rayon-core v1.6.0 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking tokio-threadpool v0.1.16 [INFO] [stderr] Checking linked-hash-map v0.5.2 [INFO] [stderr] Checking quick-error v1.2.2 [INFO] [stderr] Checking lazy_static v0.2.11 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking yaml-rust v0.4.3 [INFO] [stderr] Checking tokio-fs v0.1.6 [INFO] [stderr] Checking regex v1.3.1 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking backtrace v0.3.38 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio-udp v0.1.5 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking serde_test v0.8.23 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Compiling synstructure v0.10.2 [INFO] [stderr] Checking linked-hash-map v0.3.0 [INFO] [stderr] Checking tokio-timer v0.2.11 [INFO] [stderr] Checking tokio-serde v0.3.0 [INFO] [stderr] Checking rust-ini v0.13.0 [INFO] [stderr] Checking termcolor v1.0.5 [INFO] [stderr] Checking serde-hjson v0.8.2 [INFO] [stderr] Checking rayon v1.2.0 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Compiling serde_derive v1.0.101 [INFO] [stderr] Compiling structopt-derive v0.2.18 [INFO] [stderr] Checking failure v0.1.5 [INFO] [stderr] Checking structopt v0.2.18 [INFO] [stderr] Checking serde_json v1.0.41 [INFO] [stderr] Checking toml v0.4.10 [INFO] [stderr] Checking config v0.9.3 [INFO] [stderr] Checking tokio-serde-json v0.2.0 [INFO] [stderr] Checking skeleton v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/engine/mod.rs:11:40 [INFO] [stdout] | [INFO] [stdout] 11 | fn command1(&self, arg1: u32) -> Box + Send>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 11 | fn command1(&self, arg1: u32) -> Box + Send>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/engine/mod.rs:14:51 [INFO] [stdout] | [INFO] [stdout] 14 | fn command2(&self, arg1: u32, arg2: u32) -> Box + Send>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 14 | fn command2(&self, arg1: u32, arg2: u32) -> Box + Send>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/engine/mod.rs:31:40 [INFO] [stdout] | [INFO] [stdout] 31 | fn command1(&self, arg1: u32) -> Box + Send> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 31 | fn command1(&self, arg1: u32) -> Box + Send> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/engine/mod.rs:45:51 [INFO] [stdout] | [INFO] [stdout] 45 | fn command2(&self, arg1: u32, arg2: u32) -> Box + Send> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 45 | fn command2(&self, arg1: u32, arg2: u32) -> Box + Send> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/engine/mod.rs:11:40 [INFO] [stdout] | [INFO] [stdout] 11 | fn command1(&self, arg1: u32) -> Box + Send>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 11 | fn command1(&self, arg1: u32) -> Box + Send>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/engine/mod.rs:14:51 [INFO] [stdout] | [INFO] [stdout] 14 | fn command2(&self, arg1: u32, arg2: u32) -> Box + Send>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 14 | fn command2(&self, arg1: u32, arg2: u32) -> Box + Send>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/engine/mod.rs:31:40 [INFO] [stdout] | [INFO] [stdout] 31 | fn command1(&self, arg1: u32) -> Box + Send> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 31 | fn command1(&self, arg1: u32) -> Box + Send> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/engine/mod.rs:45:51 [INFO] [stdout] | [INFO] [stdout] 45 | fn command2(&self, arg1: u32, arg2: u32) -> Box + Send> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 45 | fn command2(&self, arg1: u32, arg2: u32) -> Box + Send> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/bin/client.rs:70:10 [INFO] [stdout] | [INFO] [stdout] 70 | if let (value, _) = client [INFO] [stdout] | __________^ [INFO] [stdout] 71 | | .and_then(move |client| client.command1(arg1)) [INFO] [stdout] 72 | | .wait()? [INFO] [stdout] | |________________^ [INFO] [stdout] | [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/bin/client.rs:81:10 [INFO] [stdout] | [INFO] [stdout] 81 | if let (value, _) = client [INFO] [stdout] | __________^ [INFO] [stdout] 82 | | .and_then(move |client| client.command2(arg1, arg2)) [INFO] [stdout] 83 | | .wait()? [INFO] [stdout] | |________________^ [INFO] [stdout] | [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `configs_from_file` [INFO] [stdout] --> src/bin/server.rs:40:7 [INFO] [stdout] | [INFO] [stdout] 40 | let configs_from_file = settings.try_into::>().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_configs_from_file` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `configs_from_file` [INFO] [stdout] --> src/bin/server.rs:40:7 [INFO] [stdout] | [INFO] [stdout] 40 | let configs_from_file = settings.try_into::>().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_configs_from_file` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/bin/client.rs:70:10 [INFO] [stdout] | [INFO] [stdout] 70 | if let (value, _) = client [INFO] [stdout] | __________^ [INFO] [stdout] 71 | | .and_then(move |client| client.command1(arg1)) [INFO] [stdout] 72 | | .wait()? [INFO] [stdout] | |________________^ [INFO] [stdout] | [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/bin/client.rs:81:10 [INFO] [stdout] | [INFO] [stdout] 81 | if let (value, _) = client [INFO] [stdout] | __________^ [INFO] [stdout] 82 | | .and_then(move |client| client.command2(arg1, arg2)) [INFO] [stdout] 83 | | .wait()? [INFO] [stdout] | |________________^ [INFO] [stdout] | [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 38.74s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 6` [INFO] running `Command { std: "docker" "inspect" "e8fb605d12460b95397087229b12385d470c70ad4af7743a1e42634686098d87", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e8fb605d12460b95397087229b12385d470c70ad4af7743a1e42634686098d87", kill_on_drop: false }` [INFO] [stdout] e8fb605d12460b95397087229b12385d470c70ad4af7743a1e42634686098d87