[INFO] cloning repository https://github.com/tangramxyz/tortoise
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tangramxyz/tortoise" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftangramxyz%2Ftortoise", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftangramxyz%2Ftortoise'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d81d0ac5ef29c52948432a7d88a71d70ee97cfcc
[INFO] checking tangramxyz/tortoise against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftangramxyz%2Ftortoise" "/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/tangramxyz/tortoise 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/tangramxyz/tortoise
[INFO] finished tweaking git repo https://github.com/tangramxyz/tortoise
[INFO] tweaked toml for git repo https://github.com/tangramxyz/tortoise written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tangramxyz/tortoise 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] 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] bfd099e25364fe93986092d4e93bab8e438712baa910681c993c312b32c1de7b
[INFO] running `Command { std: "docker" "start" "-a" "bfd099e25364fe93986092d4e93bab8e438712baa910681c993c312b32c1de7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfd099e25364fe93986092d4e93bab8e438712baa910681c993c312b32c1de7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfd099e25364fe93986092d4e93bab8e438712baa910681c993c312b32c1de7b", kill_on_drop: false }`
[INFO] [stdout] bfd099e25364fe93986092d4e93bab8e438712baa910681c993c312b32c1de7b
[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] 4562a417afce99d9be22a7ac7327936409705ecc7c251041778e5516945738b4
[INFO] running `Command { std: "docker" "start" "-a" "4562a417afce99d9be22a7ac7327936409705ecc7c251041778e5516945738b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling crossbeam-utils v0.8.6
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.6
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]     Checking tortoise v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.20s
[INFO] running `Command { std: "docker" "inspect" "4562a417afce99d9be22a7ac7327936409705ecc7c251041778e5516945738b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4562a417afce99d9be22a7ac7327936409705ecc7c251041778e5516945738b4", kill_on_drop: false }`
[INFO] [stdout] 4562a417afce99d9be22a7ac7327936409705ecc7c251041778e5516945738b4
[INFO] checking tangramxyz/tortoise against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftangramxyz%2Ftortoise" "/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/tangramxyz/tortoise 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 git repo https://github.com/tangramxyz/tortoise
[INFO] finished tweaking git repo https://github.com/tangramxyz/tortoise
[INFO] tweaked toml for git repo https://github.com/tangramxyz/tortoise written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tangramxyz/tortoise 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-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60c977889d1bddfa49a29becb102996137c91294bd31e2eb896ea7889c8eeac5
[INFO] running `Command { std: "docker" "start" "-a" "60c977889d1bddfa49a29becb102996137c91294bd31e2eb896ea7889c8eeac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60c977889d1bddfa49a29becb102996137c91294bd31e2eb896ea7889c8eeac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60c977889d1bddfa49a29becb102996137c91294bd31e2eb896ea7889c8eeac5", kill_on_drop: false }`
[INFO] [stdout] 60c977889d1bddfa49a29becb102996137c91294bd31e2eb896ea7889c8eeac5
[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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aef527170aff85968954a41c5c3d8319c280aae9845604f6bd0ab52ab09c631c
[INFO] running `Command { std: "docker" "start" "-a" "aef527170aff85968954a41c5c3d8319c280aae9845604f6bd0ab52ab09c631c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling crossbeam-utils v0.8.6
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.6
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking tortoise v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.10s
[INFO] running `Command { std: "docker" "inspect" "aef527170aff85968954a41c5c3d8319c280aae9845604f6bd0ab52ab09c631c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aef527170aff85968954a41c5c3d8319c280aae9845604f6bd0ab52ab09c631c", kill_on_drop: false }`
[INFO] [stdout] aef527170aff85968954a41c5c3d8319c280aae9845604f6bd0ab52ab09c631c