[INFO] cloning repository https://github.com/anish-sinha1/concurrent-btree-insert
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anish-sinha1/concurrent-btree-insert" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanish-sinha1%2Fconcurrent-btree-insert", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanish-sinha1%2Fconcurrent-btree-insert'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c28be43c72dfb91f55d314d21ae411f9c082e98
[INFO] checking anish-sinha1/concurrent-btree-insert against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanish-sinha1%2Fconcurrent-btree-insert" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anish-sinha1/concurrent-btree-insert on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/anish-sinha1/concurrent-btree-insert
[INFO] finished tweaking git repo https://github.com/anish-sinha1/concurrent-btree-insert
[INFO] tweaked toml for git repo https://github.com/anish-sinha1/concurrent-btree-insert written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/anish-sinha1/concurrent-btree-insert 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_with_macros v2.0.0
[INFO] [stderr]   Downloaded serde_with v2.0.0
[INFO] [stderr]   Downloaded positioned-io v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3748f7b896f4ac1e6d2d554deb30ab639b74059c05c72a2ca581194c4865faf0
[INFO] running `Command { std: "docker" "start" "-a" "3748f7b896f4ac1e6d2d554deb30ab639b74059c05c72a2ca581194c4865faf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3748f7b896f4ac1e6d2d554deb30ab639b74059c05c72a2ca581194c4865faf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3748f7b896f4ac1e6d2d554deb30ab639b74059c05c72a2ca581194c4865faf0", kill_on_drop: false }`
[INFO] [stdout] 3748f7b896f4ac1e6d2d554deb30ab639b74059c05c72a2ca581194c4865faf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff957152c7ca2bec40a7365f191e7bb4bf5d6bd69b2e22842818bcca5196821f
[INFO] running `Command { std: "docker" "start" "-a" "ff957152c7ca2bec40a7365f191e7bb4bf5d6bd69b2e22842818bcca5196821f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking positioned-io v0.3.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling darling_core v0.14.1
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling darling_macro v0.14.1
[INFO] [stderr]    Compiling darling v0.14.1
[INFO] [stderr]    Compiling serde_with_macros v2.0.0
[INFO] [stderr]     Checking serde_with v2.0.0
[INFO] [stderr]     Checking serde_bytes v0.11.7
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking concurrent-btree-insert v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.88s
[INFO] running `Command { std: "docker" "inspect" "ff957152c7ca2bec40a7365f191e7bb4bf5d6bd69b2e22842818bcca5196821f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff957152c7ca2bec40a7365f191e7bb4bf5d6bd69b2e22842818bcca5196821f", kill_on_drop: false }`
[INFO] [stdout] ff957152c7ca2bec40a7365f191e7bb4bf5d6bd69b2e22842818bcca5196821f