[INFO] fetching crate contour_tracing 1.0.12...
[INFO] testing contour_tracing-1.0.12 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate contour_tracing 1.0.12 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate contour_tracing 1.0.12
[INFO] finished tweaking crates.io crate contour_tracing 1.0.12
[INFO] tweaked toml for crates.io crate contour_tracing 1.0.12 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate contour_tracing 1.0.12 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 39 packages to latest compatible versions
[INFO] [stderr]       Adding image v0.24.9 (available: v0.25.8)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4cf4871a73e2463cd19457dcda03199ff5d0f66a06022b6a9666ad5a8455a129
[INFO] running `Command { std: "docker" "start" "-a" "4cf4871a73e2463cd19457dcda03199ff5d0f66a06022b6a9666ad5a8455a129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cf4871a73e2463cd19457dcda03199ff5d0f66a06022b6a9666ad5a8455a129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cf4871a73e2463cd19457dcda03199ff5d0f66a06022b6a9666ad5a8455a129", kill_on_drop: false }`
[INFO] [stdout] 4cf4871a73e2463cd19457dcda03199ff5d0f66a06022b6a9666ad5a8455a129
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9787450c61d3c25439ff3cba093a9f11630a39cc811c747a835a1c411c98e6a8
[INFO] running `Command { std: "docker" "start" "-a" "9787450c61d3c25439ff3cba093a9f11630a39cc811c747a835a1c411c98e6a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling contour_tracing v1.0.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `MN` is never used
[INFO] [stdout]   --> src/lib.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const MN: [(i8, i8); 8] = [(0, -1), (1, -1), (1, 0), (1, 1), (0, 1), (-1, 1), (-1, 0), (-1, -1)]; // Moore neighborhood
[INFO] [stdout]    |       ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "9787450c61d3c25439ff3cba093a9f11630a39cc811c747a835a1c411c98e6a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9787450c61d3c25439ff3cba093a9f11630a39cc811c747a835a1c411c98e6a8", kill_on_drop: false }`
[INFO] [stdout] 9787450c61d3c25439ff3cba093a9f11630a39cc811c747a835a1c411c98e6a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8825890ca3539e17f4588231758646afc179167c1bf79ef8237faa59b4c38631
[INFO] running `Command { std: "docker" "start" "-a" "8825890ca3539e17f4588231758646afc179167c1bf79ef8237faa59b4c38631", kill_on_drop: false }`
[INFO] [stderr]    Compiling contour_tracing v1.0.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `MN` is never used
[INFO] [stdout]   --> src/lib.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const MN: [(i8, i8); 8] = [(0, -1), (1, -1), (1, 0), (1, 1), (0, 1), (-1, 1), (-1, 0), (-1, -1)]; // Moore neighborhood
[INFO] [stdout]    |       ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MN` is never used
[INFO] [stdout]   --> src/lib.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const MN: [(i8, i8); 8] = [(0, -1), (1, -1), (1, 0), (1, 1), (0, 1), (-1, 1), (-1, 0), (-1, -1)]; // Moore neighborhood
[INFO] [stdout]    |       ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "8825890ca3539e17f4588231758646afc179167c1bf79ef8237faa59b4c38631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8825890ca3539e17f4588231758646afc179167c1bf79ef8237faa59b4c38631", kill_on_drop: false }`
[INFO] [stdout] 8825890ca3539e17f4588231758646afc179167c1bf79ef8237faa59b4c38631
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ac5617286c9f8ff754a8ef6d24029c7fae80342bcd4ac88a5c6984c061649dc2
[INFO] running `Command { std: "docker" "start" "-a" "ac5617286c9f8ff754a8ef6d24029c7fae80342bcd4ac88a5c6984c061649dc2", kill_on_drop: false }`
[INFO] [stderr] warning: constant `MN` is never used
[INFO] [stderr]   --> src/lib.rs:28:7
[INFO] [stderr]    |
[INFO] [stderr] 28 | const MN: [(i8, i8); 8] = [(0, -1), (1, -1), (1, 0), (1, 1), (0, 1), (-1, 1), (-1, 0), (-1, -1)]; // Moore neighborhood
[INFO] [stderr]    |       ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `contour_tracing` (lib) generated 1 warning
[INFO] [stderr] warning: `contour_tracing` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/contour_tracing-3ca30220770f9689)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests contour_tracing
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ac5617286c9f8ff754a8ef6d24029c7fae80342bcd4ac88a5c6984c061649dc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac5617286c9f8ff754a8ef6d24029c7fae80342bcd4ac88a5c6984c061649dc2", kill_on_drop: false }`
[INFO] [stdout] ac5617286c9f8ff754a8ef6d24029c7fae80342bcd4ac88a5c6984c061649dc2