[INFO] fetching crate scapegoat 0.0.0...
[INFO] checking scapegoat-0.0.0 against master#da897dfb6daa268a965d2d73620316ba56020a19 for pr-76219
[INFO] extracting crate scapegoat 0.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate scapegoat 0.0.0 on toolchain da897dfb6daa268a965d2d73620316ba56020a19
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scapegoat 0.0.0
[INFO] finished tweaking crates.io crate scapegoat 0.0.0
[INFO] tweaked toml for crates.io crate scapegoat 0.0.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92e515007e55e98d8fb789f131be1b8efc329778de084f3e361270c307d9c4f9
[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" "92e515007e55e98d8fb789f131be1b8efc329778de084f3e361270c307d9c4f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92e515007e55e98d8fb789f131be1b8efc329778de084f3e361270c307d9c4f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92e515007e55e98d8fb789f131be1b8efc329778de084f3e361270c307d9c4f9", kill_on_drop: false }`
[INFO] [stdout] 92e515007e55e98d8fb789f131be1b8efc329778de084f3e361270c307d9c4f9
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 34cc46cbb28336406f6c0aa6a4cbfb231940a103171f0bfc110ebb0619bf29a4
[INFO] running `Command { std: "docker" "start" "-a" "34cc46cbb28336406f6c0aa6a4cbfb231940a103171f0bfc110ebb0619bf29a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking exitcode v1.1.2
[INFO] [stderr]     Checking scapegoat v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stdout] warning: associated function is never used: `shrink`
[INFO] [stdout]    --> src/arena.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn shrink(&mut self) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `REBAL_DENUM` should have a snake case name
[INFO] [stdout]    --> src/scapegoat.rs:591:9
[INFO] [stdout]     |
[INFO] [stdout] 591 |     let REBAL_DENUM: f64 = 3.0_f64.log(2.0); // TODO: how to eval at compile time? const doesn't work
[INFO] [stdout]     |         ^^^^^^^^^^^ help: convert the identifier to snake case: `rebal_denum`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking json5 v0.2.8
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking ruut v0.6.1
[INFO] [stdout] warning: associated function is never used: `shrink`
[INFO] [stdout]    --> src/arena.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn shrink(&mut self) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `REBAL_DENUM` should have a snake case name
[INFO] [stdout]    --> src/scapegoat.rs:591:9
[INFO] [stdout]     |
[INFO] [stdout] 591 |     let REBAL_DENUM: f64 = 3.0_f64.log(2.0); // TODO: how to eval at compile time? const doesn't work
[INFO] [stdout]     |         ^^^^^^^^^^^ help: convert the identifier to snake case: `rebal_denum`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.68s
[INFO] running `Command { std: "docker" "inspect" "34cc46cbb28336406f6c0aa6a4cbfb231940a103171f0bfc110ebb0619bf29a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34cc46cbb28336406f6c0aa6a4cbfb231940a103171f0bfc110ebb0619bf29a4", kill_on_drop: false }`
[INFO] [stdout] 34cc46cbb28336406f6c0aa6a4cbfb231940a103171f0bfc110ebb0619bf29a4