[INFO] cloning repository https://github.com/json-stream/json-stream-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/json-stream/json-stream-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjson-stream%2Fjson-stream-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjson-stream%2Fjson-stream-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a40181fcb29b7363db15fa929f8f2ddd2443a59b
[INFO] checking json-stream/json-stream-rust against master#46424fb5054f211ec836c5c03159f92e46bb35ac for pr-139042
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjson-stream%2Fjson-stream-rust" "/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/json-stream/json-stream-rust on toolchain 46424fb5054f211ec836c5c03159f92e46bb35ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/json-stream/json-stream-rust
[INFO] finished tweaking git repo https://github.com/json-stream/json-stream-rust
[INFO] tweaked toml for git repo https://github.com/json-stream/json-stream-rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/json-stream/json-stream-rust 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" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5e50efc1ab18ac03d597ebb70733f74425d0ae7d69fbf706b0fd38c43827568
[INFO] running `Command { std: "docker" "start" "-a" "f5e50efc1ab18ac03d597ebb70733f74425d0ae7d69fbf706b0fd38c43827568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5e50efc1ab18ac03d597ebb70733f74425d0ae7d69fbf706b0fd38c43827568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5e50efc1ab18ac03d597ebb70733f74425d0ae7d69fbf706b0fd38c43827568", kill_on_drop: false }`
[INFO] [stdout] f5e50efc1ab18ac03d597ebb70733f74425d0ae7d69fbf706b0fd38c43827568
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 035a078f982d17e2d34557ab4a748a96d2c6db153c80e1500dfe0d9393d945ba
[INFO] running `Command { std: "docker" "start" "-a" "035a078f982d17e2d34557ab4a748a96d2c6db153c80e1500dfe0d9393d945ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking json-stream-parser v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `JsonStreamParser` and `parse_stream`
[INFO] [stdout]    --> src/lib.rs:386:25
[INFO] [stdout]     |
[INFO] [stdout] 386 |               use super::{parse_stream, JsonStreamParser};
[INFO] [stdout]     |                           ^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 484 | / param_test! {
[INFO] [stdout] 485 | |     null: r#"null"#, Value::Null
[INFO] [stdout] 486 | |     true_value: r#"true"#, Value::Bool(true)
[INFO] [stdout] 487 | |     false_value: r#"false"#, Value::Bool(false)
[INFO] [stdout] ...   |
[INFO] [stdout] 503 | |     negative_float: r#"-123.456"#, Value::Number(serde_json::Number::from_f64(-123.456).unwrap())
[INFO] [stdout] 504 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `param_test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Value` and `json`
[INFO] [stdout]    --> src/lib.rs:387:30
[INFO] [stdout]     |
[INFO] [stdout] 387 |               use serde_json::{Value, json};
[INFO] [stdout]     |                                ^^^^^  ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 484 | / param_test! {
[INFO] [stdout] 485 | |     null: r#"null"#, Value::Null
[INFO] [stdout] 486 | |     true_value: r#"true"#, Value::Bool(true)
[INFO] [stdout] 487 | |     false_value: r#"false"#, Value::Bool(false)
[INFO] [stdout] ...   |
[INFO] [stdout] 503 | |     negative_float: r#"-123.456"#, Value::Number(serde_json::Number::from_f64(-123.456).unwrap())
[INFO] [stdout] 504 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `param_test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:397:21
[INFO] [stdout]     |
[INFO] [stdout] 397 |                       parser.add_char(c);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 484 | / param_test! {
[INFO] [stdout] 485 | |     null: r#"null"#, Value::Null
[INFO] [stdout] 486 | |     true_value: r#"true"#, Value::Bool(true)
[INFO] [stdout] 487 | |     false_value: r#"false"#, Value::Bool(false)
[INFO] [stdout] ...   |
[INFO] [stdout] 503 | |     negative_float: r#"-123.456"#, Value::Number(serde_json::Number::from_f64(-123.456).unwrap())
[INFO] [stdout] 504 | | }
[INFO] [stdout]     | |_- in this macro invocation
[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]     = note: this warning originates in the macro `param_test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 397 |                     let _ = parser.add_char(c);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:412:21
[INFO] [stdout]     |
[INFO] [stdout] 412 |                       parser.add_char(c);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 484 | / param_test! {
[INFO] [stdout] 485 | |     null: r#"null"#, Value::Null
[INFO] [stdout] 486 | |     true_value: r#"true"#, Value::Bool(true)
[INFO] [stdout] 487 | |     false_value: r#"false"#, Value::Bool(false)
[INFO] [stdout] ...   |
[INFO] [stdout] 503 | |     negative_float: r#"-123.456"#, Value::Number(serde_json::Number::from_f64(-123.456).unwrap())
[INFO] [stdout] 504 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `param_test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 412 |                     let _ = parser.add_char(c);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:427:21
[INFO] [stdout]     |
[INFO] [stdout] 427 |                       parser.add_char(c);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 484 | / param_test! {
[INFO] [stdout] 485 | |     null: r#"null"#, Value::Null
[INFO] [stdout] 486 | |     true_value: r#"true"#, Value::Bool(true)
[INFO] [stdout] 487 | |     false_value: r#"false"#, Value::Bool(false)
[INFO] [stdout] ...   |
[INFO] [stdout] 503 | |     negative_float: r#"-123.456"#, Value::Number(serde_json::Number::from_f64(-123.456).unwrap())
[INFO] [stdout] 504 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `param_test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 427 |                     let _ = parser.add_char(c);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:442:21
[INFO] [stdout]     |
[INFO] [stdout] 442 |                       parser.add_char(c);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 484 | / param_test! {
[INFO] [stdout] 485 | |     null: r#"null"#, Value::Null
[INFO] [stdout] 486 | |     true_value: r#"true"#, Value::Bool(true)
[INFO] [stdout] 487 | |     false_value: r#"false"#, Value::Bool(false)
[INFO] [stdout] ...   |
[INFO] [stdout] 503 | |     negative_float: r#"-123.456"#, Value::Number(serde_json::Number::from_f64(-123.456).unwrap())
[INFO] [stdout] 504 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `param_test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 442 |                     let _ = parser.add_char(c);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:457:21
[INFO] [stdout]     |
[INFO] [stdout] 457 |                       parser.add_char(c);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 484 | / param_test! {
[INFO] [stdout] 485 | |     null: r#"null"#, Value::Null
[INFO] [stdout] 486 | |     true_value: r#"true"#, Value::Bool(true)
[INFO] [stdout] 487 | |     false_value: r#"false"#, Value::Bool(false)
[INFO] [stdout] ...   |
[INFO] [stdout] 503 | |     negative_float: r#"-123.456"#, Value::Number(serde_json::Number::from_f64(-123.456).unwrap())
[INFO] [stdout] 504 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `param_test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 457 |                     let _ = parser.add_char(c);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:475:21
[INFO] [stdout]     |
[INFO] [stdout] 475 |                       parser.add_char(c);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 484 | / param_test! {
[INFO] [stdout] 485 | |     null: r#"null"#, Value::Null
[INFO] [stdout] 486 | |     true_value: r#"true"#, Value::Bool(true)
[INFO] [stdout] 487 | |     false_value: r#"false"#, Value::Bool(false)
[INFO] [stdout] ...   |
[INFO] [stdout] 503 | |     negative_float: r#"-123.456"#, Value::Number(serde_json::Number::from_f64(-123.456).unwrap())
[INFO] [stdout] 504 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `param_test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 475 |                     let _ = parser.add_char(c);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.59s
[INFO] running `Command { std: "docker" "inspect" "035a078f982d17e2d34557ab4a748a96d2c6db153c80e1500dfe0d9393d945ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "035a078f982d17e2d34557ab4a748a96d2c6db153c80e1500dfe0d9393d945ba", kill_on_drop: false }`
[INFO] [stdout] 035a078f982d17e2d34557ab4a748a96d2c6db153c80e1500dfe0d9393d945ba
