[INFO] fetching crate yaml-rust 0.4.5... [INFO] checking yaml-rust-0.4.5 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate yaml-rust 0.4.5 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate yaml-rust 0.4.5 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate yaml-rust 0.4.5 [INFO] finished tweaking crates.io crate yaml-rust 0.4.5 [INFO] tweaked toml for crates.io crate yaml-rust 0.4.5 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate crates.io crate yaml-rust 0.4.5 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8c9ea0d1663cb615666c41e394c8cdde95ea239c1b9a3a0f8b669f5718526992 [INFO] running `Command { std: "docker" "start" "-a" "8c9ea0d1663cb615666c41e394c8cdde95ea239c1b9a3a0f8b669f5718526992", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8c9ea0d1663cb615666c41e394c8cdde95ea239c1b9a3a0f8b669f5718526992", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8c9ea0d1663cb615666c41e394c8cdde95ea239c1b9a3a0f8b669f5718526992", kill_on_drop: false }` [INFO] [stdout] 8c9ea0d1663cb615666c41e394c8cdde95ea239c1b9a3a0f8b669f5718526992 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9eb8a8aa0e5288b7a0d4b3522ad8c89abba6a74235a4df58ef8003ef01f6c7fa [INFO] running `Command { std: "docker" "start" "-a" "9eb8a8aa0e5288b7a0d4b3522ad8c89abba6a74235a4df58ef8003ef01f6c7fa", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.71 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking regex-syntax v0.6.18 [INFO] [stderr] Checking linked-hash-map v0.5.3 [INFO] [stderr] Checking yaml-rust v0.4.5 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/emitter.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking aho-corasick v0.7.10 [INFO] [stdout] warning: field `marks` is never read [INFO] [stdout] --> src/parser.rs:70:5 [INFO] [stdout] | [INFO] [stdout] 66 | pub struct Parser { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] ... [INFO] [stdout] 70 | marks: Vec, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Parser` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking getrandom v0.1.16 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking regex v1.3.9 [INFO] [stderr] Checking env_logger v0.7.1 [INFO] [stderr] Checking quickcheck v0.9.2 [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/emitter.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `f64` is imported redundantly [INFO] [stdout] --> src/yaml.rs:370:9 [INFO] [stdout] | [INFO] [stdout] 370 | use std::f64; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 371 | use crate::yaml::*; [INFO] [stdout] | -------------- the item `f64` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `marks` is never read [INFO] [stdout] --> src/parser.rs:70:5 [INFO] [stdout] | [INFO] [stdout] 66 | pub struct Parser { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] ... [INFO] [stdout] 70 | marks: Vec, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Parser` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/emitter.rs:368:30 [INFO] [stdout] | [INFO] [stdout] 368 | Err(e) => panic!(format!("{}", e)), [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 368 - Err(e) => panic!(format!("{}", e)), [INFO] [stdout] 368 + Err(e) => panic!("{}", e), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/emitter.rs:405:30 [INFO] [stdout] | [INFO] [stdout] 405 | Err(e) => panic!(format!("{}", e)), [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 405 - Err(e) => panic!(format!("{}", e)), [INFO] [stdout] 405 + Err(e) => panic!("{}", e), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.07s [INFO] running `Command { std: "docker" "inspect" "9eb8a8aa0e5288b7a0d4b3522ad8c89abba6a74235a4df58ef8003ef01f6c7fa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9eb8a8aa0e5288b7a0d4b3522ad8c89abba6a74235a4df58ef8003ef01f6c7fa", kill_on_drop: false }` [INFO] [stdout] 9eb8a8aa0e5288b7a0d4b3522ad8c89abba6a74235a4df58ef8003ef01f6c7fa