[INFO] cloning repository https://github.com/EthanLuisMcDonough/json-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EthanLuisMcDonough/json-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthanLuisMcDonough%2Fjson-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthanLuisMcDonough%2Fjson-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3ebc8dcf82b623fe5fc2a1fcf5f6aa7c6ad6af6e
[INFO] checking EthanLuisMcDonough/json-rs against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthanLuisMcDonough%2Fjson-rs" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EthanLuisMcDonough/json-rs on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/EthanLuisMcDonough/json-rs
[INFO] finished tweaking git repo https://github.com/EthanLuisMcDonough/json-rs
[INFO] tweaked toml for git repo https://github.com/EthanLuisMcDonough/json-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/EthanLuisMcDonough/json-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1c04a83b16e0242552692ac394e5acdf457a6d016ae6321bca6061609919f54
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f1c04a83b16e0242552692ac394e5acdf457a6d016ae6321bca6061609919f54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1c04a83b16e0242552692ac394e5acdf457a6d016ae6321bca6061609919f54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1c04a83b16e0242552692ac394e5acdf457a6d016ae6321bca6061609919f54", kill_on_drop: false }`
[INFO] [stdout] f1c04a83b16e0242552692ac394e5acdf457a6d016ae6321bca6061609919f54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 190f14b49786ea60ec339d84837930cba0263f38514ab501735819f703d9b790
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "190f14b49786ea60ec339d84837930cba0263f38514ab501735819f703d9b790", kill_on_drop: false }`
[INFO] [stderr]     Checking json-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `drop` is imported redundantly
[INFO] [stdout]    --> src/stack/pending.rs:160:35
[INFO] [stdout]     |
[INFO] [stdout] 160 |         use std::{char::from_u32, mem::drop};
[INFO] [stdout]     |                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stack/mod.rs:35:16
[INFO] [stdout]    |
[INFO] [stdout] 35 |     ObjArr(Box<ObjArrStack>),
[INFO] [stdout]    |                ^^^^^^^^^^^ help: use `dyn`: `dyn ObjArrStack`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stack/mod.rs:36:16
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Simple(Box<SimpleStack>),
[INFO] [stdout]    |                ^^^^^^^^^^^ help: use `dyn`: `dyn SimpleStack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stack/mod.rs:61:15
[INFO] [stdout]    |
[INFO] [stdout] 61 | impl From<Box<SimpleStack>> for PendingItem {
[INFO] [stdout]    |               ^^^^^^^^^^^ help: use `dyn`: `dyn SimpleStack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stack/mod.rs:62:24
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn from(stack: Box<SimpleStack>) -> Self {
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: use `dyn`: `dyn SimpleStack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stack/mod.rs:67:15
[INFO] [stdout]    |
[INFO] [stdout] 67 | impl From<Box<ObjArrStack>> for PendingItem {
[INFO] [stdout]    |               ^^^^^^^^^^^ help: use `dyn`: `dyn ObjArrStack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stack/mod.rs:68:24
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn from(stack: Box<ObjArrStack>) -> Self {
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: use `dyn`: `dyn ObjArrStack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lib.rs:147:27
[INFO] [stdout]     |
[INFO] [stdout] 147 |                     '\x00'...'\x1F' => unicode_escape(c).into(),
[INFO] [stdout]     |                           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lib.rs:269:26
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 '-' | '0'...'9' => {
[INFO] [stdout]     |                          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/stack/object.rs:280:74
[INFO] [stdout]     |
[INFO] [stdout] 280 |                         map.insert("0000e".to_string(), JsonValue::Null);;
[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/stack/object.rs:301:78
[INFO] [stdout]     |
[INFO] [stdout] 301 | ...                   map.insert("0000e".to_string(), JsonValue::Null);;
[INFO] [stdout]     |                                                                        ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `drop` is imported redundantly
[INFO] [stdout]    --> src/stack/pending.rs:160:35
[INFO] [stdout]     |
[INFO] [stdout] 160 |         use std::{char::from_u32, mem::drop};
[INFO] [stdout]     |                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stack/mod.rs:35:16
[INFO] [stdout]    |
[INFO] [stdout] 35 |     ObjArr(Box<ObjArrStack>),
[INFO] [stdout]    |                ^^^^^^^^^^^ help: use `dyn`: `dyn ObjArrStack`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stack/mod.rs:36:16
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Simple(Box<SimpleStack>),
[INFO] [stdout]    |                ^^^^^^^^^^^ help: use `dyn`: `dyn SimpleStack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stack/mod.rs:61:15
[INFO] [stdout]    |
[INFO] [stdout] 61 | impl From<Box<SimpleStack>> for PendingItem {
[INFO] [stdout]    |               ^^^^^^^^^^^ help: use `dyn`: `dyn SimpleStack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stack/mod.rs:62:24
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn from(stack: Box<SimpleStack>) -> Self {
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: use `dyn`: `dyn SimpleStack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stack/mod.rs:67:15
[INFO] [stdout]    |
[INFO] [stdout] 67 | impl From<Box<ObjArrStack>> for PendingItem {
[INFO] [stdout]    |               ^^^^^^^^^^^ help: use `dyn`: `dyn ObjArrStack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stack/mod.rs:68:24
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn from(stack: Box<ObjArrStack>) -> Self {
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: use `dyn`: `dyn ObjArrStack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lib.rs:147:27
[INFO] [stdout]     |
[INFO] [stdout] 147 |                     '\x00'...'\x1F' => unicode_escape(c).into(),
[INFO] [stdout]     |                           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lib.rs:269:26
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 '-' | '0'...'9' => {
[INFO] [stdout]     |                          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:260:13
[INFO] [stdout]     |
[INFO] [stdout] 260 |         let mut last = processing.take();
[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: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:260:13
[INFO] [stdout]     |
[INFO] [stdout] 260 |         let mut last = processing.take();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/stack/object.rs:331:17
[INFO] [stdout]     |
[INFO] [stdout] 331 |             let mut stack = ObjectStack { inner };
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `Command { std: "docker" "inspect" "190f14b49786ea60ec339d84837930cba0263f38514ab501735819f703d9b790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "190f14b49786ea60ec339d84837930cba0263f38514ab501735819f703d9b790", kill_on_drop: false }`
[INFO] [stdout] 190f14b49786ea60ec339d84837930cba0263f38514ab501735819f703d9b790
