[INFO] cloning repository https://github.com/FauxFaux/jsonarray2pg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FauxFaux/jsonarray2pg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFauxFaux%2Fjsonarray2pg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFauxFaux%2Fjsonarray2pg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 638a02d20cf26e7c6c5415eec6f31c7e692d4e08
[INFO] checking FauxFaux/jsonarray2pg against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFauxFaux%2Fjsonarray2pg" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FauxFaux/jsonarray2pg 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/FauxFaux/jsonarray2pg
[INFO] finished tweaking git repo https://github.com/FauxFaux/jsonarray2pg
[INFO] tweaked toml for git repo https://github.com/FauxFaux/jsonarray2pg written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/FauxFaux/jsonarray2pg 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]  Downloading crates ...
[INFO] [stderr]   Downloaded num_cpus v1.3.0
[INFO] [stderr]   Downloaded siphasher v0.2.1
[INFO] [stderr]   Downloaded bufstream v0.1.2
[INFO] [stderr]   Downloaded postgres-shared v0.2.0
[INFO] [stderr]   Downloaded postgres-protocol v0.2.1
[INFO] [stderr]   Downloaded postgres v0.14.0
[INFO] [stderr]   Downloaded md5 v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 77ffbedc5e300bdb67b2fa90a075505c33b7df45b251bdadd2b3c3fcdba2ae97
[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" "77ffbedc5e300bdb67b2fa90a075505c33b7df45b251bdadd2b3c3fcdba2ae97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77ffbedc5e300bdb67b2fa90a075505c33b7df45b251bdadd2b3c3fcdba2ae97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77ffbedc5e300bdb67b2fa90a075505c33b7df45b251bdadd2b3c3fcdba2ae97", kill_on_drop: false }`
[INFO] [stdout] 77ffbedc5e300bdb67b2fa90a075505c33b7df45b251bdadd2b3c3fcdba2ae97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 4cbc0f0e8042234322839733d27a50447fcbd317df516ef68e062ead0cecb5c3
[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" "4cbc0f0e8042234322839733d27a50447fcbd317df516ef68e062ead0cecb5c3", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.21
[INFO] [stderr]     Checking siphasher v0.2.1
[INFO] [stderr]     Checking fallible-iterator v0.1.3
[INFO] [stderr]     Checking md5 v0.3.3
[INFO] [stderr]     Checking bufstream v0.1.2
[INFO] [stderr]     Checking argparse v0.2.1
[INFO] [stderr]     Checking phf_shared v0.7.21
[INFO] [stderr]     Checking phf v0.7.21
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking num_cpus v1.3.0
[INFO] [stderr]     Checking postgres-protocol v0.2.1
[INFO] [stderr]     Checking postgres-shared v0.2.0
[INFO] [stderr]     Checking postgres v0.14.0
[INFO] [stderr]     Checking jsonarray2pg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/json.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         try!(parse_token(&mut iter, &mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/json.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |         try!(parse_token(&mut iter, &mut buf).map_err(other_err));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:34:20
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut lock = try!(mux.lock().map_err(|e| format!("threadpool damaged: {}", e)));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:113:43
[INFO] [stdout]     |
[INFO] [stdout] 113 |             Box::new(stdin.lock()) as Box<io::Read>
[INFO] [stdout]     |                                           ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/json.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         try!(parse_token(&mut iter, &mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/json.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |         try!(parse_token(&mut iter, &mut buf).map_err(other_err));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:34:20
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut lock = try!(mux.lock().map_err(|e| format!("threadpool damaged: {}", e)));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:113:43
[INFO] [stdout]     |
[INFO] [stdout] 113 |             Box::new(stdin.lock()) as Box<io::Read>
[INFO] [stdout]     |                                           ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/json.rs:94:40
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn read_string<T: Iterator<Item = u8>>(mut iter: &mut T,
[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/json.rs:95:40
[INFO] [stdout]    |
[INFO] [stdout] 95 | ...                   mut buf: &mut Vec<u8>)
[INFO] [stdout]    |                       ----^^^
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/json.rs:116:37
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn read_num<T: Iterator<Item = u8>>(mut iter: &mut Peekable<T>,
[INFO] [stdout]     |                                     ----^^^^
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/json.rs:117:37
[INFO] [stdout]     |
[INFO] [stdout] 117 | ...                   mut buf: &mut Vec<u8>)
[INFO] [stdout]     |                       ----^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/json.rs:160:46
[INFO] [stdout]     |
[INFO] [stdout] 160 | pub fn parse_array_from_file<T: io::Read, F>(mut from: &mut T,
[INFO] [stdout]     |                                              ----^^^^
[INFO] [stdout]     |                                              |
[INFO] [stdout]     |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/json.rs:94:40
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn read_string<T: Iterator<Item = u8>>(mut iter: &mut T,
[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/json.rs:95:40
[INFO] [stdout]    |
[INFO] [stdout] 95 | ...                   mut buf: &mut Vec<u8>)
[INFO] [stdout]    |                       ----^^^
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/json.rs:116:37
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn read_num<T: Iterator<Item = u8>>(mut iter: &mut Peekable<T>,
[INFO] [stdout]     |                                     ----^^^^
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/json.rs:117:37
[INFO] [stdout]     |
[INFO] [stdout] 117 | ...                   mut buf: &mut Vec<u8>)
[INFO] [stdout]     |                       ----^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/json.rs:160:46
[INFO] [stdout]     |
[INFO] [stdout] 160 | pub fn parse_array_from_file<T: io::Read, F>(mut from: &mut T,
[INFO] [stdout]     |                                              ----^^^^
[INFO] [stdout]     |                                              |
[INFO] [stdout]     |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.88s
[INFO] running `Command { std: "docker" "inspect" "4cbc0f0e8042234322839733d27a50447fcbd317df516ef68e062ead0cecb5c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cbc0f0e8042234322839733d27a50447fcbd317df516ef68e062ead0cecb5c3", kill_on_drop: false }`
[INFO] [stdout] 4cbc0f0e8042234322839733d27a50447fcbd317df516ef68e062ead0cecb5c3
