[INFO] cloning repository https://github.com/DEVensiv/huffman-coding
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DEVensiv/huffman-coding" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDEVensiv%2Fhuffman-coding", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDEVensiv%2Fhuffman-coding'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e1fbddb6984d972dce4f771648482a6a62a17ca
[INFO] checking DEVensiv/huffman-coding against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDEVensiv%2Fhuffman-coding" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DEVensiv/huffman-coding 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 git repo https://github.com/DEVensiv/huffman-coding
[INFO] finished tweaking git repo https://github.com/DEVensiv/huffman-coding
[INFO] tweaked toml for git repo https://github.com/DEVensiv/huffman-coding written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/DEVensiv/huffman-coding 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 windows-targets v0.52.3
[INFO] [stderr]   Downloaded bitreader v0.3.8
[INFO] [stderr]   Downloaded hermit-abi v0.3.8
[INFO] [stderr]   Downloaded tempfile v3.10.0
[INFO] [stderr]   Downloaded bitstream-io v2.2.0
[INFO] [stderr]   Downloaded syn v2.0.51
[INFO] [stderr]   Downloaded windows_x86_64_gnullvm v0.52.3
[INFO] [stderr]   Downloaded windows_aarch64_gnullvm v0.52.3
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.52.3
[INFO] [stderr]   Downloaded windows_i686_gnu v0.52.3
[INFO] [stderr]   Downloaded windows_i686_msvc v0.52.3
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.52.3
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.52.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 408f6cdc0980995625e57f7b2a159145bc9d29eeed4a75f482eb9217e3988311
[INFO] running `Command { std: "docker" "start" "-a" "408f6cdc0980995625e57f7b2a159145bc9d29eeed4a75f482eb9217e3988311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "408f6cdc0980995625e57f7b2a159145bc9d29eeed4a75f482eb9217e3988311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408f6cdc0980995625e57f7b2a159145bc9d29eeed4a75f482eb9217e3988311", kill_on_drop: false }`
[INFO] [stdout] 408f6cdc0980995625e57f7b2a159145bc9d29eeed4a75f482eb9217e3988311
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 7a07d894046a41c33c585a7e98b2df11538d7285307056cc163c687768634fb8
[INFO] running `Command { std: "docker" "start" "-a" "7a07d894046a41c33c585a7e98b2df11538d7285307056cc163c687768634fb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]     Checking half v2.4.0
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking clap_lex v0.7.0
[INFO] [stderr]    Compiling rustix v0.38.31
[INFO] [stderr]     Checking bitflags v2.4.2
[INFO] [stderr]     Checking clap_builder v4.5.1
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking rayon v1.8.1
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]     Checking bitreader v0.3.8
[INFO] [stderr]     Checking bitstream-io v2.2.0
[INFO] [stderr]     Checking huffman v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.51
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]     Checking clap v4.5.1
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]     Checking tempfile v3.10.0
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.94s
[INFO] running `Command { std: "docker" "inspect" "7a07d894046a41c33c585a7e98b2df11538d7285307056cc163c687768634fb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a07d894046a41c33c585a7e98b2df11538d7285307056cc163c687768634fb8", kill_on_drop: false }`
[INFO] [stdout] 7a07d894046a41c33c585a7e98b2df11538d7285307056cc163c687768634fb8
[INFO] checking DEVensiv/huffman-coding against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDEVensiv%2Fhuffman-coding" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DEVensiv/huffman-coding on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DEVensiv/huffman-coding
[INFO] finished tweaking git repo https://github.com/DEVensiv/huffman-coding
[INFO] tweaked toml for git repo https://github.com/DEVensiv/huffman-coding written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/DEVensiv/huffman-coding 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89745bf54d94f5d801c511058716dc59276d5dafa5c33423783f101eaace874c
[INFO] running `Command { std: "docker" "start" "-a" "89745bf54d94f5d801c511058716dc59276d5dafa5c33423783f101eaace874c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89745bf54d94f5d801c511058716dc59276d5dafa5c33423783f101eaace874c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89745bf54d94f5d801c511058716dc59276d5dafa5c33423783f101eaace874c", kill_on_drop: false }`
[INFO] [stdout] 89745bf54d94f5d801c511058716dc59276d5dafa5c33423783f101eaace874c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e09a6531d3b1647369104ed2be259922e12065c682b85375a8fa074925e2ce4
[INFO] running `Command { std: "docker" "start" "-a" "9e09a6531d3b1647369104ed2be259922e12065c682b85375a8fa074925e2ce4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking half v2.4.0
[INFO] [stderr]    Compiling rustix v0.38.31
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking clap_lex v0.7.0
[INFO] [stderr]     Checking bitflags v2.4.2
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking clap_builder v4.5.1
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking rayon v1.8.1
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]     Checking bitreader v0.3.8
[INFO] [stderr]     Checking huffman v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bitstream-io v2.2.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.51
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]     Checking clap v4.5.1
[INFO] [stderr]     Checking tempfile v3.10.0
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.19s
[INFO] running `Command { std: "docker" "inspect" "9e09a6531d3b1647369104ed2be259922e12065c682b85375a8fa074925e2ce4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e09a6531d3b1647369104ed2be259922e12065c682b85375a8fa074925e2ce4", kill_on_drop: false }`
[INFO] [stdout] 9e09a6531d3b1647369104ed2be259922e12065c682b85375a8fa074925e2ce4