[INFO] fetching crate spelling_corrector 0.2.3...
[INFO] checking spelling_corrector-0.2.3 against beta for pr-78714
[INFO] extracting crate spelling_corrector 0.2.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate spelling_corrector 0.2.3 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate spelling_corrector 0.2.3
[INFO] finished tweaking crates.io crate spelling_corrector 0.2.3
[INFO] tweaked toml for crates.io crate spelling_corrector 0.2.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate spelling_corrector 0.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e92cb85cc164ca764ea5f1b62929972f2a03ba7aa85b0fc38c074fe70cc74266
[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" "e92cb85cc164ca764ea5f1b62929972f2a03ba7aa85b0fc38c074fe70cc74266", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e92cb85cc164ca764ea5f1b62929972f2a03ba7aa85b0fc38c074fe70cc74266", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e92cb85cc164ca764ea5f1b62929972f2a03ba7aa85b0fc38c074fe70cc74266", kill_on_drop: false }`
[INFO] [stdout] e92cb85cc164ca764ea5f1b62929972f2a03ba7aa85b0fc38c074fe70cc74266
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b577af0a123ead10b59c8b08b3e50ca84473a9746800df079d830027c9ee221f
[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" "b577af0a123ead10b59c8b08b3e50ca84473a9746800df079d830027c9ee221f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling cc v1.0.49
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling generator v0.6.19
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking globset v0.4.4
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking ignore v0.4.10
[INFO] [stderr]     Checking globwalk v0.3.1
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling syn-mid v0.4.0
[INFO] [stderr]    Compiling rustversion v1.0.1
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling proc-macro-error v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.3
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking exitfailure v0.5.1
[INFO] [stderr]     Checking clap-verbosity-flag v0.2.0
[INFO] [stderr]    Compiling structopt-derive v0.4.0
[INFO] [stderr]     Checking structopt v0.3.7
[INFO] [stderr]     Checking quicli v0.4.0
[INFO] [stderr]     Checking spelling_corrector v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `w1`
[INFO] [stdout]    --> src/corrector.rs:135:27
[INFO] [stdout]     |
[INFO] [stdout] 135 |             .max_by(|(p1, w1), (p2, w2)| p1.partial_cmp(p2).expect("Tried to compare NAN"))
[INFO] [stdout]     |                           ^^ help: if this is intentional, prefix it with an underscore: `_w1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w2`
[INFO] [stdout]    --> src/corrector.rs:135:37
[INFO] [stdout]     |
[INFO] [stdout] 135 |             .max_by(|(p1, w1), (p2, w2)| p1.partial_cmp(p2).expect("Tried to compare NAN"))
[INFO] [stdout]     |                                     ^^ help: if this is intentional, prefix it with an underscore: `_w2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/corrector.rs:136:20
[INFO] [stdout]     |
[INFO] [stdout] 136 |             .map(|(p, w)| w)
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w1`
[INFO] [stdout]    --> src/corrector.rs:135:27
[INFO] [stdout]     |
[INFO] [stdout] 135 |             .max_by(|(p1, w1), (p2, w2)| p1.partial_cmp(p2).expect("Tried to compare NAN"))
[INFO] [stdout]     |                           ^^ help: if this is intentional, prefix it with an underscore: `_w1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w2`
[INFO] [stdout]    --> src/corrector.rs:135:37
[INFO] [stdout]     |
[INFO] [stdout] 135 |             .max_by(|(p1, w1), (p2, w2)| p1.partial_cmp(p2).expect("Tried to compare NAN"))
[INFO] [stdout]     |                                     ^^ help: if this is intentional, prefix it with an underscore: `_w2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/corrector.rs:136:20
[INFO] [stdout]     |
[INFO] [stdout] 136 |             .map(|(p, w)| w)
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.19s
[INFO] running `Command { std: "docker" "inspect" "b577af0a123ead10b59c8b08b3e50ca84473a9746800df079d830027c9ee221f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b577af0a123ead10b59c8b08b3e50ca84473a9746800df079d830027c9ee221f", kill_on_drop: false }`
[INFO] [stdout] b577af0a123ead10b59c8b08b3e50ca84473a9746800df079d830027c9ee221f