[INFO] fetching crate rubrail 0.9.1...
[INFO] checking rubrail-0.9.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate rubrail 0.9.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate rubrail 0.9.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rubrail 0.9.1
[INFO] finished tweaking crates.io crate rubrail 0.9.1
[INFO] tweaked toml for crates.io crate rubrail 0.9.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate rubrail 0.9.1 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fruitbasket v0.9.1
[INFO] [stderr]   Downloaded log4rs v0.8.3
[INFO] [stderr]   Downloaded arc-swap v0.3.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df2bac371e2461eb0326ba41aeb9b83379ccadee422c8704904b5fa0d51eefb9
[INFO] running `Command { std: "docker" "start" "-a" "df2bac371e2461eb0326ba41aeb9b83379ccadee422c8704904b5fa0d51eefb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df2bac371e2461eb0326ba41aeb9b83379ccadee422c8704904b5fa0d51eefb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df2bac371e2461eb0326ba41aeb9b83379ccadee422c8704904b5fa0d51eefb9", kill_on_drop: false }`
[INFO] [stdout] df2bac371e2461eb0326ba41aeb9b83379ccadee422c8704904b5fa0d51eefb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2b5c32508505d28628e37d516fed640540dc0f1b3e174707f4485cf827e567f
[INFO] running `Command { std: "docker" "start" "-a" "a2b5c32508505d28628e37d516fed640540dc0f1b3e174707f4485cf827e567f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking arc-swap v0.3.11
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]    Compiling rubrail v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking log4rs v0.8.3
[INFO] [stderr]     Checking fruitbasket v0.9.1
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> examples/example.rs:92:18
[INFO] [stdout]    |
[INFO] [stdout] 92 |             _ => (45. / translation.abs()),
[INFO] [stdout]    |                  ^                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 92 -             _ => (45. / translation.abs()),
[INFO] [stdout] 92 +             _ => 45. / translation.abs(),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.51s
[INFO] running `Command { std: "docker" "inspect" "a2b5c32508505d28628e37d516fed640540dc0f1b3e174707f4485cf827e567f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2b5c32508505d28628e37d516fed640540dc0f1b3e174707f4485cf827e567f", kill_on_drop: false }`
[INFO] [stdout] a2b5c32508505d28628e37d516fed640540dc0f1b3e174707f4485cf827e567f
[INFO] checking rubrail-0.9.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate rubrail 0.9.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate rubrail 0.9.1 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rubrail 0.9.1
[INFO] finished tweaking crates.io crate rubrail 0.9.1
[INFO] tweaked toml for crates.io crate rubrail 0.9.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate rubrail 0.9.1 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a796f2f38771779fc3da15438a8e0c4548a9ec8eedc4655fda0c1f873d35ed11
[INFO] running `Command { std: "docker" "start" "-a" "a796f2f38771779fc3da15438a8e0c4548a9ec8eedc4655fda0c1f873d35ed11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a796f2f38771779fc3da15438a8e0c4548a9ec8eedc4655fda0c1f873d35ed11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a796f2f38771779fc3da15438a8e0c4548a9ec8eedc4655fda0c1f873d35ed11", kill_on_drop: false }`
[INFO] [stdout] a796f2f38771779fc3da15438a8e0c4548a9ec8eedc4655fda0c1f873d35ed11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b34b6ce7e6e192b09d15e52cc44498c34e39e501ed20bb201649f3cb7b9a7c4
[INFO] running `Command { std: "docker" "start" "-a" "8b34b6ce7e6e192b09d15e52cc44498c34e39e501ed20bb201649f3cb7b9a7c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking arc-swap v0.3.11
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]    Compiling rubrail v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking log4rs v0.8.3
[INFO] [stderr]     Checking fruitbasket v0.9.1
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> examples/example.rs:92:18
[INFO] [stdout]    |
[INFO] [stdout] 92 |             _ => (45. / translation.abs()),
[INFO] [stdout]    |                  ^                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 92 -             _ => (45. / translation.abs()),
[INFO] [stdout] 92 +             _ => 45. / translation.abs(),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.80s
[INFO] running `Command { std: "docker" "inspect" "8b34b6ce7e6e192b09d15e52cc44498c34e39e501ed20bb201649f3cb7b9a7c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b34b6ce7e6e192b09d15e52cc44498c34e39e501ed20bb201649f3cb7b9a7c4", kill_on_drop: false }`
[INFO] [stdout] 8b34b6ce7e6e192b09d15e52cc44498c34e39e501ed20bb201649f3cb7b9a7c4