[INFO] fetching crate lightbird 0.1.8...
[INFO] checking lightbird-0.1.8 against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] extracting crate lightbird 0.1.8 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate lightbird 0.1.8 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lightbird 0.1.8
[INFO] finished tweaking crates.io crate lightbird 0.1.8
[INFO] tweaked toml for crates.io crate lightbird 0.1.8 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b439e3fc5596d7c5f38757233933c73095dc4a2fee7f92822122a84b3ab2cd01
[INFO] running `Command { std: "docker" "start" "-a" "b439e3fc5596d7c5f38757233933c73095dc4a2fee7f92822122a84b3ab2cd01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b439e3fc5596d7c5f38757233933c73095dc4a2fee7f92822122a84b3ab2cd01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b439e3fc5596d7c5f38757233933c73095dc4a2fee7f92822122a84b3ab2cd01", kill_on_drop: false }`
[INFO] [stdout] b439e3fc5596d7c5f38757233933c73095dc4a2fee7f92822122a84b3ab2cd01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52ac7de31507470e344ce528dbba31470537a6d7f324e29303edba0314b5c990
[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" "52ac7de31507470e344ce528dbba31470537a6d7f324e29303edba0314b5c990", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking lightbird v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/process.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/processor.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/process.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/processor.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/disk.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         Err(err) => return String::from("Unknown"),
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/process.rs:82:22
[INFO] [stdout]    |
[INFO] [stdout] 82 |         .filter(|(k, v)| match *k {
[INFO] [stdout]    |                      ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/disk.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         Err(err) => return String::from("Unknown"),
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/process.rs:82:22
[INFO] [stdout]    |
[INFO] [stdout] 82 |         .filter(|(k, v)| match *k {
[INFO] [stdout]    |                      ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/disk.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     file.read_to_string(&mut content);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/disk.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     file.read_to_string(&mut content);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/disk.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |         get_disk();
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.33s
[INFO] running `Command { std: "docker" "inspect" "52ac7de31507470e344ce528dbba31470537a6d7f324e29303edba0314b5c990", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52ac7de31507470e344ce528dbba31470537a6d7f324e29303edba0314b5c990", kill_on_drop: false }`
[INFO] [stdout] 52ac7de31507470e344ce528dbba31470537a6d7f324e29303edba0314b5c990