[INFO] fetching crate grss 0.1.0... [INFO] checking grss-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate grss 0.1.0 into /workspace/builds/worker-5-tc1/source [INFO] validating manifest of crates.io crate grss 0.1.0 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 crates.io crate grss 0.1.0 [INFO] finished tweaking crates.io crate grss 0.1.0 [INFO] tweaked toml for crates.io crate grss 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 97 packages [INFO] [stderr] Adding assert_cmd v0.10.2 (latest: v2.0.14) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding clap v2.34.0 (latest: v4.5.4) [INFO] [stderr] Adding encode_unicode v0.3.6 (latest: v1.0.0) [INFO] [stderr] Adding escargot v0.3.1 (latest: v0.5.10) [INFO] [stderr] Adding float-cmp v0.8.0 (latest: v0.9.0) [INFO] [stderr] Adding heck v0.3.3 (latest: v0.5.0) [INFO] [stderr] Adding hermit-abi v0.1.19 (latest: v0.3.9) [INFO] [stderr] Adding indicatif v0.11.0 (latest: v0.17.8) [INFO] [stderr] Adding linux-raw-sys v0.4.13 (latest: v0.6.4) [INFO] [stderr] Adding number_prefix v0.2.8 (latest: v0.4.0) [INFO] [stderr] Adding object v0.32.2 (latest: v0.34.0) [INFO] [stderr] Adding predicates v1.0.8 (latest: v3.1.0) [INFO] [stderr] Adding proc-macro2 v0.4.30 (latest: v1.0.79) [INFO] [stderr] Adding quote v0.6.13 (latest: v1.0.35) [INFO] [stderr] Adding redox_syscall v0.4.1 (latest: v0.5.1) [INFO] [stderr] Adding strsim v0.8.0 (latest: v0.11.1) [INFO] [stderr] Adding structopt v0.2.18 (latest: v0.3.26) [INFO] [stderr] Adding structopt-derive v0.2.18 (latest: v0.4.18) [INFO] [stderr] Adding syn v0.15.44 (latest: v2.0.58) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.58) [INFO] [stderr] Adding synstructure v0.12.6 (latest: v0.13.1) [INFO] [stderr] Adding textwrap v0.11.0 (latest: v0.16.1) [INFO] [stderr] Adding unicode-xid v0.1.0 (latest: v0.2.4) [INFO] [stderr] Adding windows-targets v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_i686_gnu v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_i686_msvc v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4) [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] Downloading crates ... [INFO] [stderr] Downloaded normalize-line-endings v0.3.0 [INFO] [stderr] Downloaded predicates v1.0.8 [INFO] [stderr] Downloaded number_prefix v0.2.8 [INFO] [stderr] Downloaded indicatif v0.11.0 [INFO] [stderr] Downloaded float-cmp v0.8.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 3ed68eb2b8b2351dad8ff5a8f96e9c7b315b2000c36913b224a4cf0738707128 [INFO] running `Command { std: "docker" "start" "-a" "3ed68eb2b8b2351dad8ff5a8f96e9c7b315b2000c36913b224a4cf0738707128", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3ed68eb2b8b2351dad8ff5a8f96e9c7b315b2000c36913b224a4cf0738707128", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3ed68eb2b8b2351dad8ff5a8f96e9c7b315b2000c36913b224a4cf0738707128", kill_on_drop: false }` [INFO] [stdout] 3ed68eb2b8b2351dad8ff5a8f96e9c7b315b2000c36913b224a4cf0738707128 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] ac4f911e85dfc480055f2456c47b837a41a9633ebaa6cba263523f9398b7bb68 [INFO] running `Command { std: "docker" "start" "-a" "ac4f911e85dfc480055f2456c47b837a41a9633ebaa6cba263523f9398b7bb68", kill_on_drop: false }` [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking parking_lot_core v0.9.9 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking console v0.15.8 [INFO] [stderr] Checking number_prefix v0.2.8 [INFO] [stderr] Checking predicates-core v1.0.6 [INFO] [stderr] Compiling escargot v0.3.1 [INFO] [stderr] Checking float-cmp v0.8.0 [INFO] [stderr] Checking linux-raw-sys v0.4.13 [INFO] [stderr] Compiling rustix v0.38.32 [INFO] [stderr] Checking normalize-line-endings v0.3.0 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Checking termtree v0.4.1 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking predicates v1.0.8 [INFO] [stderr] Checking predicates-tree v1.0.9 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Checking indicatif v0.11.0 [INFO] [stderr] Compiling structopt-derive v0.2.18 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Checking tempfile v3.10.1 [INFO] [stderr] Checking structopt v0.2.18 [INFO] [stderr] Checking backtrace v0.3.71 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking exitfailure v0.5.1 [INFO] [stderr] Checking grss v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:4:13 [INFO] [stdout] | [INFO] [stdout] 4 | writeln!(writer, "{}", line); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking serde v1.0.197 [INFO] [stderr] Checking serde_json v1.0.115 [INFO] [stderr] Checking assert_cmd v0.10.2 [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> tests/cli.rs:5:15 [INFO] [stdout] | [INFO] [stdout] 5 | use std::io::{self, Write}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/cli.rs:8:42 [INFO] [stdout] | [INFO] [stdout] 8 | fn file_doesnt_exist() -> Result<(), Box> { [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] 8 | fn file_doesnt_exist() -> Result<(), Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/cli.rs:21:45 [INFO] [stdout] | [INFO] [stdout] 21 | fn find_content_in_file() -> Result<(), Box> { [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] 21 | fn find_content_in_file() -> Result<(), Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.07s [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:4:13 [INFO] [stdout] | [INFO] [stdout] 4 | writeln!(writer, "{}", line); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "ac4f911e85dfc480055f2456c47b837a41a9633ebaa6cba263523f9398b7bb68", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ac4f911e85dfc480055f2456c47b837a41a9633ebaa6cba263523f9398b7bb68", kill_on_drop: false }` [INFO] [stdout] ac4f911e85dfc480055f2456c47b837a41a9633ebaa6cba263523f9398b7bb68