[INFO] fetching crate heapmon 0.1.2...
[INFO] checking heapmon-0.1.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate heapmon 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate heapmon 0.1.2 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 heapmon 0.1.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate heapmon 0.1.2
[INFO] tweaked toml for crates.io crate heapmon 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate heapmon 0.1.2 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]  Downloading crates ...
[INFO] [stderr]   Downloaded log v0.4.17
[INFO] [stderr]   Downloaded windows-targets v0.48.2
[INFO] [stderr]   Downloaded once_cell v1.17.1
[INFO] [stderr]   Downloaded num-integer v0.1.45
[INFO] [stderr]   Downloaded num-traits v0.2.15
[INFO] [stderr]   Downloaded addr2line v0.19.0
[INFO] [stderr]   Downloaded miniz_oxide v0.6.2
[INFO] [stderr]   Downloaded object v0.30.3
[INFO] [stderr]   Downloaded windows_aarch64_gnullvm v0.48.2
[INFO] [stderr]   Downloaded windows_x86_64_gnullvm v0.48.2
[INFO] [stderr]   Downloaded gimli v0.27.2
[INFO] [stderr]   Downloaded libc v0.2.140
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.48.2
[INFO] [stderr]   Downloaded windows_i686_gnu v0.48.2
[INFO] [stderr]   Downloaded windows_i686_msvc v0.48.2
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.48.2
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.48.2
[INFO] [stderr]   Downloaded syn v2.0.28
[INFO] [stderr]   Downloaded chrono v0.4.23
[INFO] [stderr]   Downloaded fern v0.6.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.28
[INFO] [stderr]   Downloaded regex v1.7.1
[INFO] [stderr]   Downloaded backtrace v0.3.67
[INFO] [stderr]   Downloaded cc v1.0.79
[INFO] [stderr]   Downloaded rustc-demangle v0.1.21
[INFO] [stderr]   Downloaded quote v1.0.32
[INFO] [stderr]   Downloaded aho-corasick v0.7.20
[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] 100252c5e5a6283e0aa8418b35f2c0e8c37fc2f1488bd293f3c563586e25201a
[INFO] running `Command { std: "docker" "start" "-a" "100252c5e5a6283e0aa8418b35f2c0e8c37fc2f1488bd293f3c563586e25201a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "100252c5e5a6283e0aa8418b35f2c0e8c37fc2f1488bd293f3c563586e25201a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "100252c5e5a6283e0aa8418b35f2c0e8c37fc2f1488bd293f3c563586e25201a", kill_on_drop: false }`
[INFO] [stdout] 100252c5e5a6283e0aa8418b35f2c0e8c37fc2f1488bd293f3c563586e25201a
[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] 0292c1700533b99b647aca494928c099514bced7de66be3bcf1b0e0f05667f0d
[INFO] running `Command { std: "docker" "start" "-a" "0292c1700533b99b647aca494928c099514bced7de66be3bcf1b0e0f05667f0d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking gimli v0.27.2
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking fern v0.6.1
[INFO] [stderr]     Checking object v0.30.3
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stderr]     Checking chrono v0.4.23
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stderr]     Checking addr2line v0.19.0
[INFO] [stderr]     Checking heapmon v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `backtrace` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use backtrace;
[INFO] [stdout]    |     ^^^^^^^^^ the item `backtrace` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `backtrace` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use backtrace;
[INFO] [stdout]    |     ^^^^^^^^^ the item `backtrace` is already defined by prelude
[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` profile [unoptimized + debuginfo] target(s) in 8.14s
[INFO] running `Command { std: "docker" "inspect" "0292c1700533b99b647aca494928c099514bced7de66be3bcf1b0e0f05667f0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0292c1700533b99b647aca494928c099514bced7de66be3bcf1b0e0f05667f0d", kill_on_drop: false }`
[INFO] [stdout] 0292c1700533b99b647aca494928c099514bced7de66be3bcf1b0e0f05667f0d
[INFO] checking heapmon-0.1.2 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate heapmon 0.1.2 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate heapmon 0.1.2 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 heapmon 0.1.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate heapmon 0.1.2
[INFO] tweaked toml for crates.io crate heapmon 0.1.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate heapmon 0.1.2 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] a31bf3d1252f0f560bc1f10a419ecac0690d64b1e171df95c6a80e4097713067
[INFO] running `Command { std: "docker" "start" "-a" "a31bf3d1252f0f560bc1f10a419ecac0690d64b1e171df95c6a80e4097713067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a31bf3d1252f0f560bc1f10a419ecac0690d64b1e171df95c6a80e4097713067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a31bf3d1252f0f560bc1f10a419ecac0690d64b1e171df95c6a80e4097713067", kill_on_drop: false }`
[INFO] [stdout] a31bf3d1252f0f560bc1f10a419ecac0690d64b1e171df95c6a80e4097713067
[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] c95979ea39b621a30d9ab6e3770daf6550ca40e2c4e4ec914c7d3e867ed5b6d2
[INFO] running `Command { std: "docker" "start" "-a" "c95979ea39b621a30d9ab6e3770daf6550ca40e2c4e4ec914c7d3e867ed5b6d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking gimli v0.27.2
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking fern v0.6.1
[INFO] [stderr]     Checking object v0.30.3
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stderr]     Checking chrono v0.4.23
[INFO] [stderr]     Checking addr2line v0.19.0
[INFO] [stderr]     Checking heapmon v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `backtrace` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use backtrace;
[INFO] [stdout]    |     ^^^^^^^^^ the item `backtrace` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `backtrace` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use backtrace;
[INFO] [stdout]    |     ^^^^^^^^^ the item `backtrace` is already defined by prelude
[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` profile [unoptimized + debuginfo] target(s) in 6.44s
[INFO] running `Command { std: "docker" "inspect" "c95979ea39b621a30d9ab6e3770daf6550ca40e2c4e4ec914c7d3e867ed5b6d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c95979ea39b621a30d9ab6e3770daf6550ca40e2c4e4ec914c7d3e867ed5b6d2", kill_on_drop: false }`
[INFO] [stdout] c95979ea39b621a30d9ab6e3770daf6550ca40e2c4e4ec914c7d3e867ed5b6d2