[INFO] cloning repository https://github.com/mk0218/Some [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mk0218/Some" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmk0218%2FSome", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmk0218%2FSome'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 95c45f6c2a11467c24777e98d4ebc06574055cbb [INFO] checking mk0218/Some against master#6f40082313d8374bdf962aba943a712d5322fae6 for pr-117967 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmk0218%2FSome" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mk0218/Some on toolchain 6f40082313d8374bdf962aba943a712d5322fae6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6f40082313d8374bdf962aba943a712d5322fae6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/mk0218/Some [INFO] finished tweaking git repo https://github.com/mk0218/Some [INFO] tweaked toml for git repo https://github.com/mk0218/Some written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/mk0218/Some 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" "+6f40082313d8374bdf962aba943a712d5322fae6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking mk0218/Some against try#57fd74335bb14b59b719dc3cc5bc4257e73f33ce for pr-117967 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmk0218%2FSome" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mk0218/Some on toolchain 57fd74335bb14b59b719dc3cc5bc4257e73f33ce [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/mk0218/Some [INFO] finished tweaking git repo https://github.com/mk0218/Some [INFO] tweaked toml for git repo https://github.com/mk0218/Some written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/mk0218/Some 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" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 68c6687808d0f5d6b9ab1c6cd81cd910831c81630d646097e9fe31f6c2419a08 [INFO] running `Command { std: "docker" "start" "-a" "68c6687808d0f5d6b9ab1c6cd81cd910831c81630d646097e9fe31f6c2419a08", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "68c6687808d0f5d6b9ab1c6cd81cd910831c81630d646097e9fe31f6c2419a08", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "68c6687808d0f5d6b9ab1c6cd81cd910831c81630d646097e9fe31f6c2419a08", kill_on_drop: false }` [INFO] [stdout] 68c6687808d0f5d6b9ab1c6cd81cd910831c81630d646097e9fe31f6c2419a08 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ed77631e9ce041255d8d9a9611bfc0ca94e3fd22fa541cb820d41b9871db5ff0 [INFO] running `Command { std: "docker" "start" "-a" "ed77631e9ce041255d8d9a9611bfc0ca94e3fd22fa541cb820d41b9871db5ff0", kill_on_drop: false }` [INFO] [stderr] Checking some v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `Identifier` is never constructed [INFO] [stdout] --> src/syntax.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct Identifier(String); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Enclosure` is never used [INFO] [stdout] --> src/syntax.rs:3:6 [INFO] [stdout] | [INFO] [stdout] 3 | enum Enclosure { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Literal` is never used [INFO] [stdout] --> src/syntax.rs:12:6 [INFO] [stdout] | [INFO] [stdout] 12 | enum Literal { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Value` is never used [INFO] [stdout] --> src/syntax.rs:18:6 [INFO] [stdout] | [INFO] [stdout] 18 | enum Value { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `ArithmeticOperation` is never used [INFO] [stdout] --> src/syntax.rs:22:6 [INFO] [stdout] | [INFO] [stdout] 22 | enum ArithmeticOperation { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Expr` is never used [INFO] [stdout] --> src/syntax.rs:29:6 [INFO] [stdout] | [INFO] [stdout] 29 | enum Expr { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Stmt` is never used [INFO] [stdout] --> src/syntax.rs:35:6 [INFO] [stdout] | [INFO] [stdout] 35 | enum Stmt { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `AssignmentStmt` is never constructed [INFO] [stdout] --> src/syntax.rs:39:8 [INFO] [stdout] | [INFO] [stdout] 39 | struct AssignmentStmt(Identifier, Expr); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Program` is never constructed [INFO] [stdout] --> src/syntax.rs:41:8 [INFO] [stdout] | [INFO] [stdout] 41 | struct Program(Vec, Expr); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Space` and `Chars` are never constructed [INFO] [stdout] --> src/parser/buffer.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 6 | pub enum BufferState { [INFO] [stdout] | ----------- variants in this enum [INFO] [stdout] 7 | Idle, [INFO] [stdout] 8 | Space, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 9 | Chars, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Identifier` is never constructed [INFO] [stdout] --> src/syntax.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct Identifier(String); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Enclosure` is never used [INFO] [stdout] --> src/syntax.rs:3:6 [INFO] [stdout] | [INFO] [stdout] 3 | enum Enclosure { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Literal` is never used [INFO] [stdout] --> src/syntax.rs:12:6 [INFO] [stdout] | [INFO] [stdout] 12 | enum Literal { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Value` is never used [INFO] [stdout] --> src/syntax.rs:18:6 [INFO] [stdout] | [INFO] [stdout] 18 | enum Value { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `ArithmeticOperation` is never used [INFO] [stdout] --> src/syntax.rs:22:6 [INFO] [stdout] | [INFO] [stdout] 22 | enum ArithmeticOperation { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Expr` is never used [INFO] [stdout] --> src/syntax.rs:29:6 [INFO] [stdout] | [INFO] [stdout] 29 | enum Expr { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Stmt` is never used [INFO] [stdout] --> src/syntax.rs:35:6 [INFO] [stdout] | [INFO] [stdout] 35 | enum Stmt { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `AssignmentStmt` is never constructed [INFO] [stdout] --> src/syntax.rs:39:8 [INFO] [stdout] | [INFO] [stdout] 39 | struct AssignmentStmt(Identifier, Expr); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Program` is never constructed [INFO] [stdout] --> src/syntax.rs:41:8 [INFO] [stdout] | [INFO] [stdout] 41 | struct Program(Vec, Expr); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Space` and `Chars` are never constructed [INFO] [stdout] --> src/parser/buffer.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 6 | pub enum BufferState { [INFO] [stdout] | ----------- variants in this enum [INFO] [stdout] 7 | Idle, [INFO] [stdout] 8 | Space, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 9 | Chars, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/parser/parser.rs:22:13 [INFO] [stdout] | [INFO] [stdout] 22 | parser.read_line(&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)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 22 | let _ = parser.read_line(&line); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/parser/parser.rs:22:13 [INFO] [stdout] | [INFO] [stdout] 22 | parser.read_line(&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)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 22 | let _ = parser.read_line(&line); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.17s [INFO] running `Command { std: "docker" "inspect" "ed77631e9ce041255d8d9a9611bfc0ca94e3fd22fa541cb820d41b9871db5ff0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ed77631e9ce041255d8d9a9611bfc0ca94e3fd22fa541cb820d41b9871db5ff0", kill_on_drop: false }` [INFO] [stdout] ed77631e9ce041255d8d9a9611bfc0ca94e3fd22fa541cb820d41b9871db5ff0