[INFO] fetching crate tiny-json 0.0.1... [INFO] testing tiny-json-0.0.1 against beta-2022-04-10 for beta-1.61-1 [INFO] extracting crate tiny-json 0.0.1 into /workspace/builds/worker-7/source [INFO] validating manifest of crates.io crate tiny-json 0.0.1 on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate tiny-json 0.0.1 [INFO] finished tweaking crates.io crate tiny-json 0.0.1 [INFO] tweaked toml for crates.io crate tiny-json 0.0.1 written to /workspace/builds/worker-7/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 13c4e2b988cbe227aa66a6d8e129f1b0b13900f9cb32a6284c830755722dd88d [INFO] running `Command { std: "docker" "start" "-a" "13c4e2b988cbe227aa66a6d8e129f1b0b13900f9cb32a6284c830755722dd88d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "13c4e2b988cbe227aa66a6d8e129f1b0b13900f9cb32a6284c830755722dd88d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "13c4e2b988cbe227aa66a6d8e129f1b0b13900f9cb32a6284c830755722dd88d", kill_on_drop: false }` [INFO] [stdout] 13c4e2b988cbe227aa66a6d8e129f1b0b13900f9cb32a6284c830755722dd88d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 83a121ea197c5c1d1d158cd2ef94c29a795c2a2f9e8b11fce672b7375608b0ba [INFO] running `Command { std: "docker" "start" "-a" "83a121ea197c5c1d1d158cd2ef94c29a795c2a2f9e8b11fce672b7375608b0ba", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling tiny-json v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::fmt::Pointer` [INFO] [stdout] --> src/node.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fmt::Pointer; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Display`, `Formatter` [INFO] [stdout] --> src/token.rs:1:16 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fmt::{Display, Formatter}; [INFO] [stdout] | ^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::util::*` [INFO] [stdout] --> src/parser.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::util::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `NodeType` [INFO] [stdout] --> src/walk.rs:2:36 [INFO] [stdout] | [INFO] [stdout] 2 | use crate::node::{Node, NodeChild, NodeType}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Deref` [INFO] [stdout] --> src/stringifier.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::ops::Deref; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::walk::walk` [INFO] [stdout] --> src/stringifier.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use crate::walk::walk; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/stringifier.rs:46:17 [INFO] [stdout] | [INFO] [stdout] 46 | ; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/stringifier.rs:61:17 [INFO] [stdout] | [INFO] [stdout] 61 | ; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `msg` is never read [INFO] [stdout] --> src/util.rs:133:17 [INFO] [stdout] | [INFO] [stdout] 133 | let mut msg = String::new(); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/walk.rs:18:26 [INFO] [stdout] | [INFO] [stdout] 18 | NodeChild::Value(x) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/stringifier.rs:49:25 [INFO] [stdout] | [INFO] [stdout] 49 | let mut str = key_str; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/stringifier.rs:49:21 [INFO] [stdout] | [INFO] [stdout] 49 | let mut str = key_str; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/util.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | pub fn new(line: usize, column: usize) -> Position { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/util.rs:146:16 [INFO] [stdout] | [INFO] [stdout] 146 | panic!(msg); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 146 | panic!("{}", msg); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/util.rs:163:16 [INFO] [stdout] | [INFO] [stdout] 163 | panic!(msg); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 163 | panic!("{}", msg); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/util.rs:179:16 [INFO] [stdout] | [INFO] [stdout] 179 | panic!(msg); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 179 | panic!("{}", msg); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.81s [INFO] running `Command { std: "docker" "inspect" "83a121ea197c5c1d1d158cd2ef94c29a795c2a2f9e8b11fce672b7375608b0ba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "83a121ea197c5c1d1d158cd2ef94c29a795c2a2f9e8b11fce672b7375608b0ba", kill_on_drop: false }` [INFO] [stdout] 83a121ea197c5c1d1d158cd2ef94c29a795c2a2f9e8b11fce672b7375608b0ba [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6e15299b2c31e1a0b0c1ef25e5c4562d0739f7699f4fd560f56b77bfb9bfd3f5 [INFO] running `Command { std: "docker" "start" "-a" "6e15299b2c31e1a0b0c1ef25e5c4562d0739f7699f4fd560f56b77bfb9bfd3f5", kill_on_drop: false }` [INFO] [stderr] Compiling tiny-json v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::fmt::Pointer` [INFO] [stdout] --> src/node.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fmt::Pointer; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Display`, `Formatter` [INFO] [stdout] --> src/token.rs:1:16 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fmt::{Display, Formatter}; [INFO] [stdout] | ^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::util::*` [INFO] [stdout] --> src/parser.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::util::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `NodeType` [INFO] [stdout] --> src/walk.rs:2:36 [INFO] [stdout] | [INFO] [stdout] 2 | use crate::node::{Node, NodeChild, NodeType}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Deref` [INFO] [stdout] --> src/stringifier.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::ops::Deref; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::walk::walk` [INFO] [stdout] --> src/stringifier.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use crate::walk::walk; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/stringifier.rs:46:17 [INFO] [stdout] | [INFO] [stdout] 46 | ; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/stringifier.rs:61:17 [INFO] [stdout] | [INFO] [stdout] 61 | ; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `msg` is never read [INFO] [stdout] --> src/util.rs:133:17 [INFO] [stdout] | [INFO] [stdout] 133 | let mut msg = String::new(); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/walk.rs:18:26 [INFO] [stdout] | [INFO] [stdout] 18 | NodeChild::Value(x) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/stringifier.rs:49:25 [INFO] [stdout] | [INFO] [stdout] 49 | let mut str = key_str; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/stringifier.rs:49:21 [INFO] [stdout] | [INFO] [stdout] 49 | let mut str = key_str; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/util.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | pub fn new(line: usize, column: usize) -> Position { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/util.rs:146:16 [INFO] [stdout] | [INFO] [stdout] 146 | panic!(msg); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 146 | panic!("{}", msg); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/util.rs:163:16 [INFO] [stdout] | [INFO] [stdout] 163 | panic!(msg); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 163 | panic!("{}", msg); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/util.rs:179:16 [INFO] [stdout] | [INFO] [stdout] 179 | panic!(msg); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 179 | panic!("{}", msg); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fmt::Pointer` [INFO] [stdout] --> src/node.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fmt::Pointer; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Display`, `Formatter` [INFO] [stdout] --> src/token.rs:1:16 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fmt::{Display, Formatter}; [INFO] [stdout] | ^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::util::*` [INFO] [stdout] --> src/parser.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::util::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `NodeType` [INFO] [stdout] --> src/walk.rs:2:36 [INFO] [stdout] | [INFO] [stdout] 2 | use crate::node::{Node, NodeChild, NodeType}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Deref` [INFO] [stdout] --> src/stringifier.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::ops::Deref; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::walk::walk` [INFO] [stdout] --> src/stringifier.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use crate::walk::walk; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/stringifier.rs:46:17 [INFO] [stdout] | [INFO] [stdout] 46 | ; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/stringifier.rs:61:17 [INFO] [stdout] | [INFO] [stdout] 61 | ; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `msg` is never read [INFO] [stdout] --> src/util.rs:133:17 [INFO] [stdout] | [INFO] [stdout] 133 | let mut msg = String::new(); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/walk.rs:18:26 [INFO] [stdout] | [INFO] [stdout] 18 | NodeChild::Value(x) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/stringifier.rs:49:25 [INFO] [stdout] | [INFO] [stdout] 49 | let mut str = key_str; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/stringifier.rs:49:21 [INFO] [stdout] | [INFO] [stdout] 49 | let mut str = key_str; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/util.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | pub fn new(line: usize, column: usize) -> Position { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/util.rs:146:16 [INFO] [stdout] | [INFO] [stdout] 146 | panic!(msg); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 146 | panic!("{}", msg); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/util.rs:163:16 [INFO] [stdout] | [INFO] [stdout] 163 | panic!(msg); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 163 | panic!("{}", msg); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/util.rs:179:16 [INFO] [stdout] | [INFO] [stdout] 179 | panic!(msg); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 179 | panic!("{}", msg); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.47s [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/tiny_json-b5ee3a0f7e205e6a) [INFO] running `Command { std: "docker" "inspect" "6e15299b2c31e1a0b0c1ef25e5c4562d0739f7699f4fd560f56b77bfb9bfd3f5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6e15299b2c31e1a0b0c1ef25e5c4562d0739f7699f4fd560f56b77bfb9bfd3f5", kill_on_drop: false }` [INFO] [stdout] 6e15299b2c31e1a0b0c1ef25e5c4562d0739f7699f4fd560f56b77bfb9bfd3f5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 8eccab5ad095d90deff3dd9c92dc738049834ccf54c236a3e4b2509f5e1c4ac7 [INFO] running `Command { std: "docker" "start" "-a" "8eccab5ad095d90deff3dd9c92dc738049834ccf54c236a3e4b2509f5e1c4ac7", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `std::fmt::Pointer` [INFO] [stderr] --> src/node.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::fmt::Pointer; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Display`, `Formatter` [INFO] [stderr] --> src/token.rs:1:16 [INFO] [stderr] | [INFO] [stderr] 1 | use std::fmt::{Display, Formatter}; [INFO] [stderr] | ^^^^^^^ ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `crate::util::*` [INFO] [stderr] --> src/parser.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use crate::util::*; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `NodeType` [INFO] [stderr] --> src/walk.rs:2:36 [INFO] [stderr] | [INFO] [stderr] 2 | use crate::node::{Node, NodeChild, NodeType}; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::ops::Deref` [INFO] [stderr] --> src/stringifier.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::ops::Deref; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `crate::walk::walk` [INFO] [stderr] --> src/stringifier.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use crate::walk::walk; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unnecessary trailing semicolon [INFO] [stderr] --> src/stringifier.rs:46:17 [INFO] [stderr] | [INFO] [stderr] 46 | ; [INFO] [stderr] | ^ help: remove this semicolon [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary trailing semicolon [INFO] [stderr] --> src/stringifier.rs:61:17 [INFO] [stderr] | [INFO] [stderr] 61 | ; [INFO] [stderr] | ^ help: remove this semicolon [INFO] [stderr] [INFO] [stderr] warning: value assigned to `msg` is never read [INFO] [stderr] --> src/util.rs:133:17 [INFO] [stderr] | [INFO] [stderr] 133 | let mut msg = String::new(); [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/walk.rs:18:26 [INFO] [stderr] | [INFO] [stderr] 18 | NodeChild::Value(x) => { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `str` [INFO] [stderr] --> src/stringifier.rs:49:25 [INFO] [stderr] | [INFO] [stderr] 49 | let mut str = key_str; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/stringifier.rs:49:21 [INFO] [stderr] | [INFO] [stderr] 49 | let mut str = key_str; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/util.rs:10:12 [INFO] [stderr] | [INFO] [stderr] 10 | pub fn new(line: usize, column: usize) -> Position { [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: panic message is not a string literal [INFO] [stderr] --> src/util.rs:146:16 [INFO] [stderr] | [INFO] [stderr] 146 | panic!(msg); [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stderr] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: add a "{}" format string to Display the message [INFO] [stderr] | [INFO] [stderr] 146 | panic!("{}", msg); [INFO] [stderr] | +++++ [INFO] [stderr] [INFO] [stderr] warning: panic message is not a string literal [INFO] [stderr] --> src/util.rs:163:16 [INFO] [stderr] | [INFO] [stderr] 163 | panic!(msg); [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: add a "{}" format string to Display the message [INFO] [stderr] | [INFO] [stderr] 163 | panic!("{}", msg); [INFO] [stderr] | +++++ [INFO] [stderr] [INFO] [stderr] warning: panic message is not a string literal [INFO] [stderr] --> src/util.rs:179:16 [INFO] [stderr] | [INFO] [stderr] 179 | panic!(msg); [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: add a "{}" format string to Display the message [INFO] [stderr] | [INFO] [stderr] 179 | panic!("{}", msg); [INFO] [stderr] | +++++ [INFO] [stderr] [INFO] [stderr] warning: `tiny-json` (lib) generated 16 warnings [INFO] [stderr] warning: `tiny-json` (lib test) generated 16 warnings (16 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tiny_json-b5ee3a0f7e205e6a) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests tiny-json [INFO] [stderr] warning: unnecessary trailing semicolon [INFO] [stderr] --> /opt/rustwide/workdir/src/stringifier.rs:46:17 [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] running 0 tests [INFO] [stderr] 46 | ; [INFO] [stdout] [INFO] [stderr] | ^ help: remove this semicolon [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary trailing semicolon [INFO] [stderr] --> /opt/rustwide/workdir/src/stringifier.rs:61:17 [INFO] [stderr] | [INFO] [stderr] 61 | ; [INFO] [stderr] | ^ help: remove this semicolon [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] running `Command { std: "docker" "inspect" "8eccab5ad095d90deff3dd9c92dc738049834ccf54c236a3e4b2509f5e1c4ac7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8eccab5ad095d90deff3dd9c92dc738049834ccf54c236a3e4b2509f5e1c4ac7", kill_on_drop: false }` [INFO] [stdout] 8eccab5ad095d90deff3dd9c92dc738049834ccf54c236a3e4b2509f5e1c4ac7