[INFO] cloning repository https://github.com/etaoins/arret
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/etaoins/arret" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fetaoins%2Farret", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fetaoins%2Farret'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0954159f8fd1edc2fb9540b9bb7bf13a4616fc22
[INFO] checking etaoins/arret against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fetaoins%2Farret" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/etaoins/arret on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/etaoins/arret
[INFO] finished tweaking git repo https://github.com/etaoins/arret
[INFO] tweaked toml for git repo https://github.com/etaoins/arret written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/etaoins/arret already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.60
[INFO] [stderr]   Downloaded llvm-sys v100.2.0
[INFO] [stderr]   Downloaded directories-next v2.0.0
[INFO] [stderr]   Downloaded regex v1.4.2
[INFO] [stderr]   Downloaded hermit-abi v0.1.17
[INFO] [stderr]   Downloaded pin-project-lite v0.2.0
[INFO] [stderr]   Downloaded nibble_vec v0.1.0
[INFO] [stderr]   Downloaded libloading v0.7.0
[INFO] [stderr]   Downloaded bytes v1.0.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.1
[INFO] [stderr]   Downloaded cc v1.0.66
[INFO] [stderr]   Downloaded dirs-next v2.0.0
[INFO] [stderr]   Downloaded endian-type v0.1.2
[INFO] [stderr]   Downloaded form_urlencoded v1.0.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.0
[INFO] [stderr]   Downloaded url v2.2.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.21
[INFO] [stderr]   Downloaded nix v0.20.0
[INFO] [stderr]   Downloaded codespan-reporting v0.11.0
[INFO] [stderr]   Downloaded radix_trie v0.2.1
[INFO] [stderr]   Downloaded utf8parse v0.2.0
[INFO] [stderr]   Downloaded tokio v1.9.0
[INFO] [stderr]   Downloaded dirs-sys-next v0.1.1
[INFO] [stderr]   Downloaded rustyline v8.0.0
[INFO] [stderr]   Downloaded unicode-normalization v0.1.16
[INFO] [stderr]   Downloaded tinyvec v1.1.0
[INFO] [stderr]   Downloaded syn v1.0.54
[INFO] [stderr]   Downloaded serde_derive v1.0.118
[INFO] [stderr]   Downloaded serde v1.0.118
[INFO] [stderr]   Downloaded getrandom v0.1.15
[INFO] [stderr]   Downloaded lsp-types v0.84.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d499aea9fcf89a1f6b79cb2065dc4c001e6a74e1a5612af7740b9161afb39176
[INFO] running `Command { std: "docker" "start" "-a" "d499aea9fcf89a1f6b79cb2065dc4c001e6a74e1a5612af7740b9161afb39176", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d499aea9fcf89a1f6b79cb2065dc4c001e6a74e1a5612af7740b9161afb39176", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d499aea9fcf89a1f6b79cb2065dc4c001e6a74e1a5612af7740b9161afb39176", kill_on_drop: false }`
[INFO] [stdout] d499aea9fcf89a1f6b79cb2065dc4c001e6a74e1a5612af7740b9161afb39176
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7665631e5acd2aba4d59ed35c2aa0f2edc0e2f1cfc9f0b5fb4972a54f390506f
[INFO] running `Command { std: "docker" "start" "-a" "7665631e5acd2aba4d59ed35c2aa0f2edc0e2f1cfc9f0b5fb4972a54f390506f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking arret-syntax v0.1.0 (/opt/rustwide/workdir/syntax)
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]     Checking arret-runtime v0.1.0 (/opt/rustwide/workdir/runtime)
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking libloading v0.7.0
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking codespan-reporting v0.11.0
[INFO] [stderr]     Checking arret-runtime-syntax v0.1.0 (/opt/rustwide/workdir/runtime-syntax)
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking dirs-sys-next v0.1.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking directories-next v2.0.0
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]     Checking arret-rfi-derive v0.1.0 (/opt/rustwide/workdir/rfi-derive)
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rustyline v8.0.0
[INFO] [stderr]    Compiling llvm-sys v100.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling serde_repr v0.1.6
[INFO] [stderr]     Checking arret-stdlib v0.1.0 (/opt/rustwide/workdir/stdlib/rust)
[INFO] [stderr]     Checking arret-compiler v0.1.0 (/opt/rustwide/workdir/compiler)
[INFO] [stderr]     Checking arret v0.1.0 (/opt/rustwide/workdir/driver)
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking lsp-types v0.84.0
[INFO] [stderr]     Checking arret-lsp-server v0.1.0 (/opt/rustwide/workdir/lsp-server)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] running `Command { std: "docker" "inspect" "7665631e5acd2aba4d59ed35c2aa0f2edc0e2f1cfc9f0b5fb4972a54f390506f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7665631e5acd2aba4d59ed35c2aa0f2edc0e2f1cfc9f0b5fb4972a54f390506f", kill_on_drop: false }`
[INFO] [stdout] 7665631e5acd2aba4d59ed35c2aa0f2edc0e2f1cfc9f0b5fb4972a54f390506f