[INFO] fetching crate mech 0.0.2... [INFO] checking mech-0.0.2 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1 [INFO] extracting crate mech 0.0.2 into /workspace/builds/worker-11/source [INFO] validating manifest of crates.io crate mech 0.0.2 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b [INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate mech 0.0.2 [INFO] finished tweaking crates.io crate mech 0.0.2 [INFO] tweaked toml for crates.io crate mech 0.0.2 written to /workspace/builds/worker-11/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded mech-server v0.0.2 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 0197eda6178043a11b34457cdfcc5bd88440f528a3e7af444b20caedf5a80448 [INFO] running `"docker" "start" "-a" "0197eda6178043a11b34457cdfcc5bd88440f528a3e7af444b20caedf5a80448"` [INFO] [stderr] Checking ws v0.7.9 [INFO] [stderr] Checking mech-program v0.0.2 [INFO] [stderr] Checking mount v0.4.0 [INFO] [stderr] Checking staticfile v0.5.0 [INFO] [stderr] Checking mech-server v0.0.2 [INFO] [stderr] Checking mech v0.0.2 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused imports: `PathBuf`, `Path` [INFO] [stderr] --> src/bin/mech.rs:11:17 [INFO] [stderr] | [INFO] [stderr] 11 | use std::path::{Path, PathBuf}; [INFO] [stderr] | ^^^^ ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Sender`, `self` [INFO] [stderr] --> src/bin/mech.rs:12:23 [INFO] [stderr] | [INFO] [stderr] 12 | use std::sync::mpsc::{self, Sender}; [INFO] [stderr] | ^^^^ ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `ProgramRunner`, `RunLoop` [INFO] [stderr] --> src/bin/mech.rs:23:34 [INFO] [stderr] | [INFO] [stderr] 23 | use mech::{Table, Value, Hasher, ProgramRunner, RunLoop, RunLoopMessage, ClientMessage, Parser}; [INFO] [stderr] | ^^^^^^^^^^^^^ ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `nom::digit1 as nom_digit1` [INFO] [stderr] --> src/bin/mech.rs:30:5 [INFO] [stderr] | [INFO] [stderr] 30 | use nom::digit1 as nom_digit1; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around pattern [INFO] [stderr] --> src/bin/mech.rs:186:9 [INFO] [stderr] | [INFO] [stderr] 186 | (Ok(ClientMessage::Table(table))) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around pattern [INFO] [stderr] --> src/bin/mech.rs:192:9 [INFO] [stderr] | [INFO] [stderr] 192 | (Ok(ClientMessage::Pause)) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around pattern [INFO] [stderr] --> src/bin/mech.rs:195:9 [INFO] [stderr] | [INFO] [stderr] 195 | (Ok(ClientMessage::Resume)) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around pattern [INFO] [stderr] --> src/bin/mech.rs:198:9 [INFO] [stderr] | [INFO] [stderr] 198 | (Ok(ClientMessage::Clear)) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around pattern [INFO] [stderr] --> src/bin/mech.rs:201:9 [INFO] [stderr] | [INFO] [stderr] 201 | (Ok(ClientMessage::NewBlocks(count))) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unused imports: `PathBuf`, `Path` [INFO] [stderr] --> src/bin/mech.rs:11:17 [INFO] [stderr] | [INFO] [stderr] 11 | use std::path::{Path, PathBuf}; [INFO] [stderr] | ^^^^ ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Sender`, `self` [INFO] [stderr] --> src/bin/mech.rs:12:23 [INFO] [stderr] | [INFO] [stderr] 12 | use std::sync::mpsc::{self, Sender}; [INFO] [stderr] | ^^^^ ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `ProgramRunner`, `RunLoop` [INFO] [stderr] --> src/bin/mech.rs:23:34 [INFO] [stderr] | [INFO] [stderr] 23 | use mech::{Table, Value, Hasher, ProgramRunner, RunLoop, RunLoopMessage, ClientMessage, Parser}; [INFO] [stderr] | ^^^^^^^^^^^^^ ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `nom::digit1 as nom_digit1` [INFO] [stderr] --> src/bin/mech.rs:30:5 [INFO] [stderr] | [INFO] [stderr] 30 | use nom::digit1 as nom_digit1; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around pattern [INFO] [stderr] --> src/bin/mech.rs:186:9 [INFO] [stderr] | [INFO] [stderr] 186 | (Ok(ClientMessage::Table(table))) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around pattern [INFO] [stderr] --> src/bin/mech.rs:192:9 [INFO] [stderr] | [INFO] [stderr] 192 | (Ok(ClientMessage::Pause)) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around pattern [INFO] [stderr] --> src/bin/mech.rs:195:9 [INFO] [stderr] | [INFO] [stderr] 195 | (Ok(ClientMessage::Resume)) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around pattern [INFO] [stderr] --> src/bin/mech.rs:198:9 [INFO] [stderr] | [INFO] [stderr] 198 | (Ok(ClientMessage::Clear)) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around pattern [INFO] [stderr] --> src/bin/mech.rs:201:9 [INFO] [stderr] | [INFO] [stderr] 201 | (Ok(ClientMessage::NewBlocks(count))) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unused import: `nom::AtEof` [INFO] [stderr] --> src/bin/mech.rs:31:5 [INFO] [stderr] | [INFO] [stderr] 31 | use nom::AtEof as eof; [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/bin/mech.rs:160:9 [INFO] [stderr] | [INFO] [stderr] 160 | err => { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_err` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `nom::AtEof` [INFO] [stderr] --> src/bin/mech.rs:31:5 [INFO] [stderr] | [INFO] [stderr] 31 | use nom::AtEof as eof; [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/bin/mech.rs:160:9 [INFO] [stderr] | [INFO] [stderr] 160 | err => { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_err` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:138:15 [INFO] [stderr] | [INFO] [stderr] 138 | mech_client.running.send(RunLoopMessage::Table(id)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:141:15 [INFO] [stderr] | [INFO] [stderr] 141 | mech_client.running.send(RunLoopMessage::Clear); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:144:15 [INFO] [stderr] | [INFO] [stderr] 144 | mech_client.running.send(RunLoopMessage::PrintCore); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:147:15 [INFO] [stderr] | [INFO] [stderr] 147 | mech_client.running.send(RunLoopMessage::PrintRuntime); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:149:36 [INFO] [stderr] | [INFO] [stderr] 149 | ReplCommand::Pause => {mech_client.running.send(RunLoopMessage::Pause);}, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:150:37 [INFO] [stderr] | [INFO] [stderr] 150 | ReplCommand::Resume => {mech_client.running.send(RunLoopMessage::Resume);}, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:168:13 [INFO] [stderr] | [INFO] [stderr] 168 | mech_client.running.send(RunLoopMessage::Code(input.trim().to_string())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:175:15 [INFO] [stderr] | [INFO] [stderr] 175 | mech_client.running.send(RunLoopMessage::Code(command)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:138:15 [INFO] [stderr] | [INFO] [stderr] 138 | mech_client.running.send(RunLoopMessage::Table(id)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:141:15 [INFO] [stderr] | [INFO] [stderr] 141 | mech_client.running.send(RunLoopMessage::Clear); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:144:15 [INFO] [stderr] | [INFO] [stderr] 144 | mech_client.running.send(RunLoopMessage::PrintCore); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:147:15 [INFO] [stderr] | [INFO] [stderr] 147 | mech_client.running.send(RunLoopMessage::PrintRuntime); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:149:36 [INFO] [stderr] | [INFO] [stderr] 149 | ReplCommand::Pause => {mech_client.running.send(RunLoopMessage::Pause);}, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:150:37 [INFO] [stderr] | [INFO] [stderr] 150 | ReplCommand::Resume => {mech_client.running.send(RunLoopMessage::Resume);}, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:168:13 [INFO] [stderr] | [INFO] [stderr] 168 | mech_client.running.send(RunLoopMessage::Code(input.trim().to_string())); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/mech.rs:175:15 [INFO] [stderr] | [INFO] [stderr] 175 | mech_client.running.send(RunLoopMessage::Code(command)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 8.22s [INFO] running `"docker" "inspect" "0197eda6178043a11b34457cdfcc5bd88440f528a3e7af444b20caedf5a80448"` [INFO] running `"docker" "rm" "-f" "0197eda6178043a11b34457cdfcc5bd88440f528a3e7af444b20caedf5a80448"` [INFO] [stdout] 0197eda6178043a11b34457cdfcc5bd88440f528a3e7af444b20caedf5a80448