[INFO] fetching crate rusty_brainfck 0.1.3... [INFO] checking rusty_brainfck-0.1.3 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170 [INFO] extracting crate rusty_brainfck 0.1.3 into /workspace/builds/worker-4-tc2/source [INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain [INFO] started tweaking crates.io crate rusty_brainfck 0.1.3 [INFO] finished tweaking crates.io crate rusty_brainfck 0.1.3 [INFO] tweaked toml for crates.io crate rusty_brainfck 0.1.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate rusty_brainfck 0.1.3 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate rusty_brainfck 0.1.3 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 30c98a6d18f198f24c13a64761abd50138a88b98087dd87af3171385629d0111 [INFO] running `Command { std: "docker" "start" "-a" "30c98a6d18f198f24c13a64761abd50138a88b98087dd87af3171385629d0111", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "30c98a6d18f198f24c13a64761abd50138a88b98087dd87af3171385629d0111", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "30c98a6d18f198f24c13a64761abd50138a88b98087dd87af3171385629d0111", kill_on_drop: false }` [INFO] [stdout] 30c98a6d18f198f24c13a64761abd50138a88b98087dd87af3171385629d0111 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4638d0a32f4da7548bae0172352a6660e23bf4889d5fff132574b794d5f60fea [INFO] running `Command { std: "docker" "start" "-a" "4638d0a32f4da7548bae0172352a6660e23bf4889d5fff132574b794d5f60fea", kill_on_drop: false }` [INFO] [stderr] Checking rusty_brainfck v0.1.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `write` [INFO] [stdout] --> src/alloc.rs:2:36 [INFO] [stdout] | [INFO] [stdout] 2 | use std::fmt::{Display, Formatter, write}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/alloc.rs:27:27 [INFO] [stdout] | [INFO] [stdout] 27 | pub fn new(program : &'a str) -> BrainFuckInterpreter { [INFO] [stdout] | ^^ -------------------- the lifetime gets resolved as `'a` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 27 | pub fn new(program : &'a str) -> BrainFuckInterpreter<'a> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/alloc.rs:77:20 [INFO] [stdout] | [INFO] [stdout] 77 | pub fn get_ref(&self) -> Box<&BrainFuckInterpreter> { [INFO] [stdout] | ^^^^^ --------------------- [INFO] [stdout] | | || [INFO] [stdout] | | |the lifetimes get resolved as `'_` [INFO] [stdout] | | the lifetimes get resolved as `'_` [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 77 | pub fn get_ref(&self) -> Box<&BrainFuckInterpreter<'_>> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `write` [INFO] [stdout] --> src/alloc.rs:2:36 [INFO] [stdout] | [INFO] [stdout] 2 | use std::fmt::{Display, Formatter, write}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/alloc.rs:84:9 [INFO] [stdout] | [INFO] [stdout] 84 | writeln!(f, "Cell Ptr {}", self.tape_ptr); [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: unused `Result` that must be used [INFO] [stdout] --> src/alloc.rs:85:9 [INFO] [stdout] | [INFO] [stdout] 85 | writeln!(f, "Current Cell {} ({})",self.tape[self.tape_ptr], self.tape[self.tape_ptr] as char); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [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: unused `Result` that must be used [INFO] [stdout] --> src/alloc.rs:86:9 [INFO] [stdout] | [INFO] [stdout] 86 | writeln!(f, "Program Counter: {}",self.program_ptr); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [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: unused `Result` that must be used [INFO] [stdout] --> src/alloc.rs:87:9 [INFO] [stdout] | [INFO] [stdout] 87 | writeln!(f, "Current Command: {}", self.program.as_bytes()[self.program_ptr - 1] as char); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [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: unused `Result` that must be used [INFO] [stdout] --> src/alloc.rs:89:13 [INFO] [stdout] | [INFO] [stdout] 89 | write!(f, "{},",self.tape[idx]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/alloc.rs:27:27 [INFO] [stdout] | [INFO] [stdout] 27 | pub fn new(program : &'a str) -> BrainFuckInterpreter { [INFO] [stdout] | ^^ -------------------- the lifetime gets resolved as `'a` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 27 | pub fn new(program : &'a str) -> BrainFuckInterpreter<'a> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/alloc.rs:77:20 [INFO] [stdout] | [INFO] [stdout] 77 | pub fn get_ref(&self) -> Box<&BrainFuckInterpreter> { [INFO] [stdout] | ^^^^^ --------------------- [INFO] [stdout] | | || [INFO] [stdout] | | |the lifetimes get resolved as `'_` [INFO] [stdout] | | the lifetimes get resolved as `'_` [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 77 | pub fn get_ref(&self) -> Box<&BrainFuckInterpreter<'_>> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/alloc.rs:84:9 [INFO] [stdout] | [INFO] [stdout] 84 | writeln!(f, "Cell Ptr {}", self.tape_ptr); [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: unused `Result` that must be used [INFO] [stdout] --> src/alloc.rs:85:9 [INFO] [stdout] | [INFO] [stdout] 85 | writeln!(f, "Current Cell {} ({})",self.tape[self.tape_ptr], self.tape[self.tape_ptr] as char); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [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: unused `Result` that must be used [INFO] [stdout] --> src/alloc.rs:86:9 [INFO] [stdout] | [INFO] [stdout] 86 | writeln!(f, "Program Counter: {}",self.program_ptr); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [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: unused `Result` that must be used [INFO] [stdout] --> src/alloc.rs:87:9 [INFO] [stdout] | [INFO] [stdout] 87 | writeln!(f, "Current Command: {}", self.program.as_bytes()[self.program_ptr - 1] as char); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [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: unused `Result` that must be used [INFO] [stdout] --> src/alloc.rs:89:13 [INFO] [stdout] | [INFO] [stdout] 89 | write!(f, "{},",self.tape[idx]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s [INFO] running `Command { std: "docker" "inspect" "4638d0a32f4da7548bae0172352a6660e23bf4889d5fff132574b794d5f60fea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4638d0a32f4da7548bae0172352a6660e23bf4889d5fff132574b794d5f60fea", kill_on_drop: false }` [INFO] [stdout] 4638d0a32f4da7548bae0172352a6660e23bf4889d5fff132574b794d5f60fea