[INFO] cloning repository https://github.com/endrebjorgo/json-parser [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/endrebjorgo/json-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fendrebjorgo%2Fjson-parser", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fendrebjorgo%2Fjson-parser'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 472db7e341275b06cbc2e9021ed006e67811f34d [INFO] checking endrebjorgo/json-parser against try#1baf923b9c3a455162afe43e18647f494c1a4b73 for pr-151510 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fendrebjorgo%2Fjson-parser" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/endrebjorgo/json-parser [INFO] finished tweaking git repo https://github.com/endrebjorgo/json-parser [INFO] tweaked toml for git repo https://github.com/endrebjorgo/json-parser written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/endrebjorgo/json-parser on toolchain 1baf923b9c3a455162afe43e18647f494c1a4b73 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/endrebjorgo/json-parser 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" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "fetch" "--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 [ERROR] error running command: no output for 300 seconds [INFO] checking endrebjorgo/json-parser against try#1baf923b9c3a455162afe43e18647f494c1a4b73 for pr-151510 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fendrebjorgo%2Fjson-parser" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/endrebjorgo/json-parser [INFO] finished tweaking git repo https://github.com/endrebjorgo/json-parser [INFO] tweaked toml for git repo https://github.com/endrebjorgo/json-parser written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/endrebjorgo/json-parser on toolchain 1baf923b9c3a455162afe43e18647f494c1a4b73 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/endrebjorgo/json-parser 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" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "fetch" "--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-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c1049650acf80ef7be07f79d8053b134f1ff685636840347e273c76035eee923 [INFO] running `Command { std: "docker" "start" "-a" "c1049650acf80ef7be07f79d8053b134f1ff685636840347e273c76035eee923", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c1049650acf80ef7be07f79d8053b134f1ff685636840347e273c76035eee923", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c1049650acf80ef7be07f79d8053b134f1ff685636840347e273c76035eee923", kill_on_drop: false }` [INFO] [stdout] c1049650acf80ef7be07f79d8053b134f1ff685636840347e273c76035eee923 [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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1baf923b9c3a455162afe43e18647f494c1a4b73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 499c2a3485fe77681f92b8d8dc3991ad7b43b12a3f57e625cf794b6057ee95db [INFO] running `Command { std: "docker" "start" "-a" "499c2a3485fe77681f92b8d8dc3991ad7b43b12a3f57e625cf794b6057ee95db", kill_on_drop: false }` [INFO] [stderr] Checking json-parser v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:92:13 [INFO] [stdout] | [INFO] [stdout] 92 | _ => unreachable!(), [INFO] [stdout] | ^ no value can reach this [INFO] [stdout] | [INFO] [stdout] note: multiple earlier patterns match some of the same values [INFO] [stdout] --> src/main.rs:92:13 [INFO] [stdout] | [INFO] [stdout] 74 | JSONValue::Obj(hm) => { [INFO] [stdout] | ------------------ matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 81 | JSONValue::Arr(v) => { [INFO] [stdout] | ----------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 88 | JSONValue::Str(s) => write!(f, "\"{}\"", s.replace("\\", "\\\\")), [INFO] [stdout] | ----------------- matches some of the same values [INFO] [stdout] 89 | JSONValue::Num(n) => write!(f, "{}", n), [INFO] [stdout] | ----------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 92 | _ => unreachable!(), [INFO] [stdout] | ^ ...and 2 other patterns collectively make this unreachable [INFO] [stdout] = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:92:13 [INFO] [stdout] | [INFO] [stdout] 92 | _ => unreachable!(), [INFO] [stdout] | ^ no value can reach this [INFO] [stdout] | [INFO] [stdout] note: multiple earlier patterns match some of the same values [INFO] [stdout] --> src/main.rs:92:13 [INFO] [stdout] | [INFO] [stdout] 74 | JSONValue::Obj(hm) => { [INFO] [stdout] | ------------------ matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 81 | JSONValue::Arr(v) => { [INFO] [stdout] | ----------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 88 | JSONValue::Str(s) => write!(f, "\"{}\"", s.replace("\\", "\\\\")), [INFO] [stdout] | ----------------- matches some of the same values [INFO] [stdout] 89 | JSONValue::Num(n) => write!(f, "{}", n), [INFO] [stdout] | ----------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 92 | _ => unreachable!(), [INFO] [stdout] | ^ ...and 2 other patterns collectively make this unreachable [INFO] [stdout] = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:265:21 [INFO] [stdout] | [INFO] [stdout] 265 | let mut key = parse_string(&tokens, &cursor); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:265:21 [INFO] [stdout] | [INFO] [stdout] 265 | let mut key = parse_string(&tokens, &cursor); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/main.rs:322:13 [INFO] [stdout] | [INFO] [stdout] 322 | y => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/main.rs:322:13 [INFO] [stdout] | [INFO] [stdout] 322 | y => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `get_obj`, `get_arr`, `get_str`, `get_num`, `get_bool`, and `get_null` are never used [INFO] [stdout] --> src/main.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 21 | impl JSONValue { [INFO] [stdout] | -------------- methods in this implementation [INFO] [stdout] 22 | fn get_obj(self) -> Result, &'static str> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 30 | fn get_arr(self) -> Result, &'static str> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 38 | fn get_str(self) -> Result { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 46 | fn get_num(self) -> Result { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 54 | fn get_bool(self) -> Result { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 62 | fn get_null(self) -> Result { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:75:17 [INFO] [stdout] | [INFO] [stdout] 75 | write!(f, "{}", "{\n"); [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 75 | let _ = write!(f, "{}", "{\n"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:77:21 [INFO] [stdout] | [INFO] [stdout] 77 | write!(f, " {}: {},\n", key, value); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 77 | let _ = write!(f, " {}: {},\n", key, value); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:82:17 [INFO] [stdout] | [INFO] [stdout] 82 | write!(f, "[\n"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 82 | let _ = write!(f, "[\n"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:84:21 [INFO] [stdout] | [INFO] [stdout] 84 | write!(f, " {},\n", x); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 84 | let _ = write!(f, " {},\n", x); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `get_obj`, `get_arr`, `get_str`, `get_num`, `get_bool`, and `get_null` are never used [INFO] [stdout] --> src/main.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 21 | impl JSONValue { [INFO] [stdout] | -------------- methods in this implementation [INFO] [stdout] 22 | fn get_obj(self) -> Result, &'static str> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 30 | fn get_arr(self) -> Result, &'static str> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 38 | fn get_str(self) -> Result { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 46 | fn get_num(self) -> Result { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 54 | fn get_bool(self) -> Result { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 62 | fn get_null(self) -> Result { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:75:17 [INFO] [stdout] | [INFO] [stdout] 75 | write!(f, "{}", "{\n"); [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 75 | let _ = write!(f, "{}", "{\n"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:77:21 [INFO] [stdout] | [INFO] [stdout] 77 | write!(f, " {}: {},\n", key, value); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 77 | let _ = write!(f, " {}: {},\n", key, value); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:82:17 [INFO] [stdout] | [INFO] [stdout] 82 | write!(f, "[\n"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 82 | let _ = write!(f, "[\n"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:84:21 [INFO] [stdout] | [INFO] [stdout] 84 | write!(f, " {},\n", x); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 84 | let _ = write!(f, " {},\n", x); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s [INFO] running `Command { std: "docker" "inspect" "499c2a3485fe77681f92b8d8dc3991ad7b43b12a3f57e625cf794b6057ee95db", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "499c2a3485fe77681f92b8d8dc3991ad7b43b12a3f57e625cf794b6057ee95db", kill_on_drop: false }` [INFO] [stdout] 499c2a3485fe77681f92b8d8dc3991ad7b43b12a3f57e625cf794b6057ee95db