[INFO] cloning repository https://github.com/k-xlsx/huffman-encoding
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/k-xlsx/huffman-encoding" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-xlsx%2Fhuffman-encoding", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-xlsx%2Fhuffman-encoding'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e86cc287883846ae682a84478f20139337bc3fc0
[INFO] checking k-xlsx/huffman-encoding against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-xlsx%2Fhuffman-encoding" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/k-xlsx/huffman-encoding on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/k-xlsx/huffman-encoding
[INFO] finished tweaking git repo https://github.com/k-xlsx/huffman-encoding
[INFO] tweaked toml for git repo https://github.com/k-xlsx/huffman-encoding written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/k-xlsx/huffman-encoding 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitvec v0.20.1
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9ea88f72d70831d18317ca9794a0e3be88077887008c0078bf9d35de67cbac5
[INFO] running `Command { std: "docker" "start" "-a" "b9ea88f72d70831d18317ca9794a0e3be88077887008c0078bf9d35de67cbac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9ea88f72d70831d18317ca9794a0e3be88077887008c0078bf9d35de67cbac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9ea88f72d70831d18317ca9794a0e3be88077887008c0078bf9d35de67cbac5", kill_on_drop: false }`
[INFO] [stdout] b9ea88f72d70831d18317ca9794a0e3be88077887008c0078bf9d35de67cbac5
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 824b044a47b2a66eb314e9236b0bd97cb02519843253d44f2cabef1ba2187dd0
[INFO] running `Command { std: "docker" "start" "-a" "824b044a47b2a66eb314e9236b0bd97cb02519843253d44f2cabef1ba2187dd0", kill_on_drop: false }`
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]     Checking tap v1.0.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking bitvec v0.20.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking huff_coding v1.0.0 (/opt/rustwide/workdir/huff_coding)
[INFO] [stderr]     Checking huff v1.0.6 (/opt/rustwide/workdir/huff)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.12s
[INFO] running `Command { std: "docker" "inspect" "824b044a47b2a66eb314e9236b0bd97cb02519843253d44f2cabef1ba2187dd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "824b044a47b2a66eb314e9236b0bd97cb02519843253d44f2cabef1ba2187dd0", kill_on_drop: false }`
[INFO] [stdout] 824b044a47b2a66eb314e9236b0bd97cb02519843253d44f2cabef1ba2187dd0
[INFO] checking k-xlsx/huffman-encoding against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-xlsx%2Fhuffman-encoding" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/k-xlsx/huffman-encoding on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/k-xlsx/huffman-encoding
[INFO] finished tweaking git repo https://github.com/k-xlsx/huffman-encoding
[INFO] tweaked toml for git repo https://github.com/k-xlsx/huffman-encoding written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/k-xlsx/huffman-encoding 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7284e27b498f82529fa1f700b6f8c0fc70ea87203624f4d330e6452864a8192d
[INFO] running `Command { std: "docker" "start" "-a" "7284e27b498f82529fa1f700b6f8c0fc70ea87203624f4d330e6452864a8192d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7284e27b498f82529fa1f700b6f8c0fc70ea87203624f4d330e6452864a8192d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7284e27b498f82529fa1f700b6f8c0fc70ea87203624f4d330e6452864a8192d", kill_on_drop: false }`
[INFO] [stdout] 7284e27b498f82529fa1f700b6f8c0fc70ea87203624f4d330e6452864a8192d
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2ee9a3ba9b4d44f443c17568d182c69dd22da3c1f6ae624851ec31e56fdd6f6
[INFO] running `Command { std: "docker" "start" "-a" "e2ee9a3ba9b4d44f443c17568d182c69dd22da3c1f6ae624851ec31e56fdd6f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking tap v1.0.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking bitvec v0.20.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking huff_coding v1.0.0 (/opt/rustwide/workdir/huff_coding)
[INFO] [stderr]     Checking huff v1.0.6 (/opt/rustwide/workdir/huff)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.68s
[INFO] running `Command { std: "docker" "inspect" "e2ee9a3ba9b4d44f443c17568d182c69dd22da3c1f6ae624851ec31e56fdd6f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2ee9a3ba9b4d44f443c17568d182c69dd22da3c1f6ae624851ec31e56fdd6f6", kill_on_drop: false }`
[INFO] [stdout] e2ee9a3ba9b4d44f443c17568d182c69dd22da3c1f6ae624851ec31e56fdd6f6