[INFO] fetching crate mgrrs 0.1.0... [INFO] checking mgrrs-0.1.0 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3 [INFO] extracting crate mgrrs 0.1.0 into /workspace/builds/worker-0-tc1/source [INFO] started tweaking crates.io crate mgrrs 0.1.0 [INFO] finished tweaking crates.io crate mgrrs 0.1.0 [INFO] tweaked toml for crates.io crate mgrrs 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate mgrrs 0.1.0 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate mgrrs 0.1.0 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded float-cmp v0.4.0 [INFO] [stderr] Downloaded exitfailure v0.5.1 [INFO] [stderr] Downloaded normalize-line-endings v0.2.2 [INFO] [stderr] Downloaded assert_cmd v0.10.2 [INFO] [stderr] Downloaded escargot v0.3.1 [INFO] [stderr] Downloaded synstructure v0.12.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a1afc81c883ac030c961fe4cee8f45351b73e6f9857b4ef2d8fb626825c32681 [INFO] running `Command { std: "docker" "start" "-a" "a1afc81c883ac030c961fe4cee8f45351b73e6f9857b4ef2d8fb626825c32681", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a1afc81c883ac030c961fe4cee8f45351b73e6f9857b4ef2d8fb626825c32681", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a1afc81c883ac030c961fe4cee8f45351b73e6f9857b4ef2d8fb626825c32681", kill_on_drop: false }` [INFO] [stdout] a1afc81c883ac030c961fe4cee8f45351b73e6f9857b4ef2d8fb626825c32681 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a7db690f8049edad43245b46d16559cf189008e4770c50c6e76c7a1308d1a891 [INFO] running `Command { std: "docker" "start" "-a" "a7db690f8049edad43245b46d16559cf189008e4770c50c6e76c7a1308d1a891", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.8 [INFO] [stderr] Compiling failure_derive v0.1.6 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling serde v1.0.102 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Checking clicolors-control v1.0.1 [INFO] [stderr] Checking termios v0.3.1 [INFO] [stderr] Compiling escargot v0.3.1 [INFO] [stderr] Checking predicates-core v1.0.0 [INFO] [stderr] Checking normalize-line-endings v0.2.2 [INFO] [stderr] Checking remove_dir_all v0.5.2 [INFO] [stderr] Checking rand v0.7.2 [INFO] [stderr] Checking predicates-tree v1.0.0 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking console v0.9.1 [INFO] [stderr] Checking indicatif v0.13.0 [INFO] [stderr] Checking float-cmp v0.4.0 [INFO] [stderr] Checking tempfile v3.1.0 [INFO] [stderr] Checking predicates v1.0.1 [INFO] [stderr] Compiling structopt-derive v0.2.18 [INFO] [stderr] Compiling synstructure v0.12.2 [INFO] [stderr] Compiling serde_derive v1.0.102 [INFO] [stderr] Checking structopt v0.2.18 [INFO] [stderr] Checking failure v0.1.6 [INFO] [stderr] Checking exitfailure v0.5.1 [INFO] [stderr] Checking mgrrs 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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 4 | let _ = writeln!(writer, "{}", line); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking serde_json v1.0.41 [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/cli.rs:9:45 [INFO] [stdout] | [INFO] [stdout] 9 | 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] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 9 | fn find_content_in_file() -> Result<(), Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/cli.rs:23:42 [INFO] [stdout] | [INFO] [stdout] 23 | 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] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 23 | fn file_doesnt_exist() -> Result<(), Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 4 | let _ = writeln!(writer, "{}", line); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.91s [INFO] running `Command { std: "docker" "inspect" "a7db690f8049edad43245b46d16559cf189008e4770c50c6e76c7a1308d1a891", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a7db690f8049edad43245b46d16559cf189008e4770c50c6e76c7a1308d1a891", kill_on_drop: false }` [INFO] [stdout] a7db690f8049edad43245b46d16559cf189008e4770c50c6e76c7a1308d1a891