[INFO] fetching crate inc 0.1.3... [INFO] checking inc-0.1.3 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781 [INFO] extracting crate inc 0.1.3 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate inc 0.1.3 on toolchain 195ad4830e11a544391abe296b146450dea8411b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate inc 0.1.3 [INFO] finished tweaking crates.io crate inc 0.1.3 [INFO] tweaked toml for crates.io crate inc 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate crates.io crate inc 0.1.3 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 87bd734ec5dae4c2df3edc708465648a8ea4a5664b3d60fd5cf024cfa63bbc6a [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" "87bd734ec5dae4c2df3edc708465648a8ea4a5664b3d60fd5cf024cfa63bbc6a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "87bd734ec5dae4c2df3edc708465648a8ea4a5664b3d60fd5cf024cfa63bbc6a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "87bd734ec5dae4c2df3edc708465648a8ea4a5664b3d60fd5cf024cfa63bbc6a", kill_on_drop: false }` [INFO] [stdout] 87bd734ec5dae4c2df3edc708465648a8ea4a5664b3d60fd5cf024cfa63bbc6a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1df880924ed0a16c5c7cf9ecf3bba9a07b1ef546ae9d7ff7d8e4fafbe03723fb [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" "1df880924ed0a16c5c7cf9ecf3bba9a07b1ef546ae9d7ff7d8e4fafbe03723fb", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling autocfg v0.1.6 [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling winapi v0.3.8 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling getrandom v0.1.11 [INFO] [stderr] Checking static_assertions v0.3.4 [INFO] [stderr] Checking ppv-lite86 v0.2.5 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking pretty_assertions v0.6.1 [INFO] [stderr] Compiling quickcheck_macros v0.8.0 [INFO] [stderr] Checking log v0.4.8 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking regex v1.3.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling nom v5.0.1 [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Compiling stackvector v1.0.7 [INFO] [stderr] Compiling lexical-core v0.4.3 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.0 [INFO] [stderr] Checking cgmath v0.16.1 [INFO] [stderr] Checking quickcheck v0.8.5 [INFO] [stderr] Checking winconsole v0.10.0 [INFO] [stderr] Checking colored v1.8.0 [INFO] [stderr] Checking inc v0.1.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary braces around method argument [INFO] [stdout] --> src/lang.rs:24:21 [INFO] [stdout] | [INFO] [stdout] 24 | prog.iter().map({ |expr| lift1(s, &expr) }).collect() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_braces)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around method argument [INFO] [stdout] --> src/lang.rs:130:40 [INFO] [stdout] | [INFO] [stdout] 130 | let body = body.iter().map({ |b| lift1(s, b) }).collect(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around method argument [INFO] [stdout] --> src/lang.rs:135:44 [INFO] [stdout] | [INFO] [stdout] 135 | List(list) => List(list.iter().map({ |l| lift1(s, l) }).collect()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around method argument [INFO] [stdout] --> src/lang.rs:140:35 [INFO] [stdout] | [INFO] [stdout] 140 | alt: alt.as_ref().map({ |box e| box lift1(s, &e) }), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around method argument [INFO] [stdout] --> src/parser.rs:143:70 [INFO] [stdout] | [INFO] [stdout] 143 | Ok((i, Expr::Cond { pred: box pred, then: box then, alt: alt.map({ |(_, a)| box a }) })) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around function argument [INFO] [stdout] --> src/parser.rs:171:41 [INFO] [stdout] | [INFO] [stdout] 171 | map(tuple((tag("\'"), identifier)), { |(_, i)| Expr::Symbol(i) })(i) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around function argument [INFO] [stdout] --> src/parser.rs:177:25 [INFO] [stdout] | [INFO] [stdout] 177 | (map(tag("()"), { |_| Expr::Nil })), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around function argument [INFO] [stdout] --> src/parser.rs:308:43 [INFO] [stdout] | [INFO] [stdout] 308 | preceded(tag(r"#\"), map(anychar, { |c: char| c as u8 })), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around method argument [INFO] [stdout] --> src/lang.rs:24:21 [INFO] [stdout] | [INFO] [stdout] 24 | prog.iter().map({ |expr| lift1(s, &expr) }).collect() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_braces)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around method argument [INFO] [stdout] --> src/lang.rs:130:40 [INFO] [stdout] | [INFO] [stdout] 130 | let body = body.iter().map({ |b| lift1(s, b) }).collect(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around method argument [INFO] [stdout] --> src/lang.rs:135:44 [INFO] [stdout] | [INFO] [stdout] 135 | List(list) => List(list.iter().map({ |l| lift1(s, l) }).collect()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around method argument [INFO] [stdout] --> src/lang.rs:140:35 [INFO] [stdout] | [INFO] [stdout] 140 | alt: alt.as_ref().map({ |box e| box lift1(s, &e) }), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around method argument [INFO] [stdout] --> src/parser.rs:143:70 [INFO] [stdout] | [INFO] [stdout] 143 | Ok((i, Expr::Cond { pred: box pred, then: box then, alt: alt.map({ |(_, a)| box a }) })) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around function argument [INFO] [stdout] --> src/parser.rs:171:41 [INFO] [stdout] | [INFO] [stdout] 171 | map(tuple((tag("\'"), identifier)), { |(_, i)| Expr::Symbol(i) })(i) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around function argument [INFO] [stdout] --> src/parser.rs:177:25 [INFO] [stdout] | [INFO] [stdout] 177 | (map(tag("()"), { |_| Expr::Nil })), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around function argument [INFO] [stdout] --> src/parser.rs:271:25 [INFO] [stdout] | [INFO] [stdout] 271 | (map(tag("()"), { |_| Expr::Nil })), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around function argument [INFO] [stdout] --> src/parser.rs:308:43 [INFO] [stdout] | [INFO] [stdout] 308 | preceded(tag(r"#\"), map(anychar, { |c: char| c as u8 })), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(slice_patterns, box_syntax, box_patterns)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(slice_patterns, box_syntax, box_patterns)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/lang.rs:269:30 [INFO] [stdout] | [INFO] [stdout] 269 | Err(e) => panic!(e), [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panic)]` on by default [INFO] [stdout] = note: this is no longer accepted in Rust 2021 [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 269 | Err(e) => panic!("{}", e), [INFO] [stdout] | ^^^^^ [INFO] [stdout] help: or use std::panic::panic_any instead [INFO] [stdout] | [INFO] [stdout] 269 | Err(e) => std::panic::panic_any(e), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:27:26 [INFO] [stdout] | [INFO] [stdout] 27 | Err(f) => panic!(f.to_string()), [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panic)]` on by default [INFO] [stdout] = note: this is no longer accepted in Rust 2021 [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 27 | Err(f) => panic!("{}", f.to_string()), [INFO] [stdout] | ^^^^^ [INFO] [stdout] help: or use std::panic::panic_any instead [INFO] [stdout] | [INFO] [stdout] 27 | Err(f) => std::panic::panic_any(f.to_string()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:27:26 [INFO] [stdout] | [INFO] [stdout] 27 | Err(f) => panic!(f.to_string()), [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panic)]` on by default [INFO] [stdout] = note: this is no longer accepted in Rust 2021 [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 27 | Err(f) => panic!("{}", f.to_string()), [INFO] [stdout] | ^^^^^ [INFO] [stdout] help: or use std::panic::panic_any instead [INFO] [stdout] | [INFO] [stdout] 27 | Err(f) => std::panic::panic_any(f.to_string()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 12.18s [INFO] running `Command { std: "docker" "inspect" "1df880924ed0a16c5c7cf9ecf3bba9a07b1ef546ae9d7ff7d8e4fafbe03723fb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1df880924ed0a16c5c7cf9ecf3bba9a07b1ef546ae9d7ff7d8e4fafbe03723fb", kill_on_drop: false }` [INFO] [stdout] 1df880924ed0a16c5c7cf9ecf3bba9a07b1ef546ae9d7ff7d8e4fafbe03723fb