[INFO] cloning repository https://github.com/luluvia/maso
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luluvia/maso" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluluvia%2Fmaso", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluluvia%2Fmaso'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 55aa89c51656a1ebaa7aebfbccd5478ed9d9ed7c
[INFO] checking luluvia/maso against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluluvia%2Fmaso" "/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/luluvia/maso 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/luluvia/maso
[INFO] finished tweaking git repo https://github.com/luluvia/maso
[INFO] tweaked toml for git repo https://github.com/luluvia/maso written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/luluvia/maso 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wezterm-dynamic v0.2.0
[INFO] [stderr]   Downloaded wezterm-dynamic v0.1.0
[INFO] [stderr]   Downloaded wezterm-dynamic-derive v0.1.0
[INFO] [stderr]   Downloaded wezterm-color-types v0.2.0
[INFO] [stderr]   Downloaded filedescriptor v0.8.2
[INFO] [stderr]   Downloaded memmem v0.1.1
[INFO] [stderr]   Downloaded vtparse v0.6.2
[INFO] [stderr]   Downloaded wezterm-bidi v0.2.3
[INFO] [stderr]   Downloaded terminfo v0.7.5
[INFO] [stderr]   Downloaded termwiz v0.18.0
[INFO] [stderr]   Downloaded deltae v0.3.2
[INFO] [stderr]   Downloaded superconsole v0.2.0
[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] fc9da209c30bd8c9d3179d427560749e9a0c5cd7f612059f61028f53283e9fca
[INFO] running `Command { std: "docker" "start" "-a" "fc9da209c30bd8c9d3179d427560749e9a0c5cd7f612059f61028f53283e9fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc9da209c30bd8c9d3179d427560749e9a0c5cd7f612059f61028f53283e9fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc9da209c30bd8c9d3179d427560749e9a0c5cd7f612059f61028f53283e9fca", kill_on_drop: false }`
[INFO] [stdout] fc9da209c30bd8c9d3179d427560749e9a0c5cd7f612059f61028f53283e9fca
[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] da334fc3ac4d17c9196c614a6eb9e7949d7a47ff2e52f62c5c4d95c7319e8b18
[INFO] running `Command { std: "docker" "start" "-a" "da334fc3ac4d17c9196c614a6eb9e7949d7a47ff2e52f62c5c4d95c7319e8b18", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling nom v5.1.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]     Checking lab v0.11.0
[INFO] [stderr]     Checking phf_shared v0.11.2
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]     Checking phf_shared v0.10.0
[INFO] [stderr]     Checking deltae v0.3.2
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking vtparse v0.6.2
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking finl_unicode v1.2.0
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking memmem v0.1.1
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]    Compiling phf_codegen v0.11.2
[INFO] [stderr]    Compiling terminfo v0.7.5
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking ordered-float v3.9.2
[INFO] [stderr]     Checking ordered-float v4.2.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.23.2
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling phf_macros v0.11.2
[INFO] [stderr]    Compiling wezterm-dynamic-derive v0.1.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]     Checking csscolorparser v0.6.2
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]    Compiling pest v2.7.8
[INFO] [stderr]     Checking wezterm-dynamic v0.1.0
[INFO] [stderr]     Checking wezterm-dynamic v0.2.0
[INFO] [stderr]     Checking filedescriptor v0.8.2
[INFO] [stderr]     Checking wezterm-bidi v0.2.3
[INFO] [stderr]     Checking wezterm-color-types v0.2.0
[INFO] [stderr]     Checking semver-parser v0.10.2
[INFO] [stderr]    Compiling pest_meta v2.7.8
[INFO] [stderr]     Checking semver v0.11.0
[INFO] [stderr]    Compiling pest_generator v2.7.8
[INFO] [stderr]    Compiling pest_derive v2.7.8
[INFO] [stderr]     Checking termwiz v0.18.0
[INFO] [stderr]     Checking superconsole v0.2.0
[INFO] [stderr]     Checking maso v0.1.0-next (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.90s
[INFO] running `Command { std: "docker" "inspect" "da334fc3ac4d17c9196c614a6eb9e7949d7a47ff2e52f62c5c4d95c7319e8b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da334fc3ac4d17c9196c614a6eb9e7949d7a47ff2e52f62c5c4d95c7319e8b18", kill_on_drop: false }`
[INFO] [stdout] da334fc3ac4d17c9196c614a6eb9e7949d7a47ff2e52f62c5c4d95c7319e8b18
[INFO] checking luluvia/maso against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluluvia%2Fmaso" "/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/luluvia/maso 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/luluvia/maso
[INFO] finished tweaking git repo https://github.com/luluvia/maso
[INFO] tweaked toml for git repo https://github.com/luluvia/maso written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/luluvia/maso 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] fea548a9d2644b26ac38761d16812acf5c0a1fcd305ca5314cd0a1c663c73c0b
[INFO] running `Command { std: "docker" "start" "-a" "fea548a9d2644b26ac38761d16812acf5c0a1fcd305ca5314cd0a1c663c73c0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fea548a9d2644b26ac38761d16812acf5c0a1fcd305ca5314cd0a1c663c73c0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fea548a9d2644b26ac38761d16812acf5c0a1fcd305ca5314cd0a1c663c73c0b", kill_on_drop: false }`
[INFO] [stdout] fea548a9d2644b26ac38761d16812acf5c0a1fcd305ca5314cd0a1c663c73c0b
[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] f435778bd7d96b5e5d346c3f3e927206b8ccb28885f6e18dffe8671e71591263
[INFO] running `Command { std: "docker" "start" "-a" "f435778bd7d96b5e5d346c3f3e927206b8ccb28885f6e18dffe8671e71591263", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling nom v5.1.3
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]     Checking lab v0.11.0
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking phf_shared v0.10.0
[INFO] [stderr]     Checking deltae v0.3.2
[INFO] [stderr]     Checking vtparse v0.6.2
[INFO] [stderr]     Checking memmem v0.1.1
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking finl_unicode v1.2.0
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling phf_codegen v0.11.2
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling terminfo v0.7.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking ordered-float v4.2.0
[INFO] [stderr]     Checking ordered-float v3.9.2
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking crossterm v0.23.2
[INFO] [stderr]    Compiling wezterm-dynamic-derive v0.1.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling phf_macros v0.11.2
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]     Checking csscolorparser v0.6.2
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]    Compiling pest v2.7.8
[INFO] [stderr]     Checking wezterm-dynamic v0.2.0
[INFO] [stderr]     Checking wezterm-dynamic v0.1.0
[INFO] [stderr]     Checking filedescriptor v0.8.2
[INFO] [stderr]     Checking wezterm-color-types v0.2.0
[INFO] [stderr]     Checking wezterm-bidi v0.2.3
[INFO] [stderr]    Compiling pest_meta v2.7.8
[INFO] [stderr]     Checking semver-parser v0.10.2
[INFO] [stderr]     Checking semver v0.11.0
[INFO] [stderr]    Compiling pest_generator v2.7.8
[INFO] [stderr]    Compiling pest_derive v2.7.8
[INFO] [stderr]     Checking termwiz v0.18.0
[INFO] [stderr]     Checking superconsole v0.2.0
[INFO] [stderr]     Checking maso v0.1.0-next (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.25s
[INFO] running `Command { std: "docker" "inspect" "f435778bd7d96b5e5d346c3f3e927206b8ccb28885f6e18dffe8671e71591263", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f435778bd7d96b5e5d346c3f3e927206b8ccb28885f6e18dffe8671e71591263", kill_on_drop: false }`
[INFO] [stdout] f435778bd7d96b5e5d346c3f3e927206b8ccb28885f6e18dffe8671e71591263