[INFO] fetching crate mattress 0.2.1...
[INFO] checking mattress-0.2.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate mattress 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate mattress 0.2.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mattress 0.2.1
[INFO] finished tweaking crates.io crate mattress 0.2.1
[INFO] tweaked toml for crates.io crate mattress 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate mattress 0.2.1 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xattr v1.0.0
[INFO] [stderr]   Downloaded clap_complete v4.3.2
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4165c292f534e31fe3eaf2ffdb2de9ba8eec3c9eba952feac113909329b88f7b
[INFO] running `Command { std: "docker" "start" "-a" "4165c292f534e31fe3eaf2ffdb2de9ba8eec3c9eba952feac113909329b88f7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4165c292f534e31fe3eaf2ffdb2de9ba8eec3c9eba952feac113909329b88f7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4165c292f534e31fe3eaf2ffdb2de9ba8eec3c9eba952feac113909329b88f7b", kill_on_drop: false }`
[INFO] [stdout] 4165c292f534e31fe3eaf2ffdb2de9ba8eec3c9eba952feac113909329b88f7b
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f48ab52acab6e127cfb75c3e8e2b74ede931ad0a1e2bf85e950c82875cab3292
[INFO] running `Command { std: "docker" "start" "-a" "f48ab52acab6e127cfb75c3e8e2b74ede931ad0a1e2bf85e950c82875cab3292", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling linux-raw-sys v0.4.3
[INFO] [stderr]    Compiling bitflags v2.3.3
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling anstyle v1.0.1
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling clap_lex v0.5.0
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling anstyle-parse v0.2.1
[INFO] [stderr]    Compiling serde v1.0.178
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling serde_derive v1.0.178
[INFO] [stderr]    Compiling serde_json v1.0.104
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking walkdir v2.3.3
[INFO] [stderr]    Compiling quote v1.0.31
[INFO] [stderr]    Compiling syn v2.0.26
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking xattr v1.0.0
[INFO] [stderr]     Checking anstream v0.3.2
[INFO] [stderr]     Checking clap_builder v4.3.19
[INFO] [stderr]    Compiling clap_derive v4.3.12
[INFO] [stderr]    Compiling clap v4.3.19
[INFO] [stderr]    Compiling clap_complete v4.3.2
[INFO] [stderr]    Compiling mattress v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: mattress@0.2.1: completion file is generated: "/opt/rustwide/target/debug/build/mattress-4634177a8799a96d/out/mtr.bash"
[INFO] [stderr] warning: mattress@0.2.1: completion file is generated: "/opt/rustwide/target/debug/build/mattress-4634177a8799a96d/out/mtr.elv"
[INFO] [stderr] warning: mattress@0.2.1: completion file is generated: "/opt/rustwide/target/debug/build/mattress-4634177a8799a96d/out/mtr.fish"
[INFO] [stderr] warning: mattress@0.2.1: completion file is generated: "/opt/rustwide/target/debug/build/mattress-4634177a8799a96d/out/_mtr.ps1"
[INFO] [stderr] warning: mattress@0.2.1: completion file is generated: "/opt/rustwide/target/debug/build/mattress-4634177a8799a96d/out/_mtr"
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.40s
[INFO] running `Command { std: "docker" "inspect" "f48ab52acab6e127cfb75c3e8e2b74ede931ad0a1e2bf85e950c82875cab3292", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f48ab52acab6e127cfb75c3e8e2b74ede931ad0a1e2bf85e950c82875cab3292", kill_on_drop: false }`
[INFO] [stdout] f48ab52acab6e127cfb75c3e8e2b74ede931ad0a1e2bf85e950c82875cab3292