[INFO] cloning repository https://github.com/elenakrittik/rm-backup
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elenakrittik/rm-backup" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felenakrittik%2Frm-backup", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felenakrittik%2Frm-backup'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 400bd3373f155c63b52f8def6afbf76dd40ec0a2
[INFO] checking elenakrittik/rm-backup against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felenakrittik%2Frm-backup" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elenakrittik/rm-backup 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/elenakrittik/rm-backup
[INFO] finished tweaking git repo https://github.com/elenakrittik/rm-backup
[INFO] tweaked toml for git repo https://github.com/elenakrittik/rm-backup written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/elenakrittik/rm-backup 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]     Updating crates.io index
[INFO] [stderr]      Locking 1 package
[INFO] [stderr]     Updating rm-backup v0.1.0 (/workspace/builds/worker-4-tc1/source) -> v0.1.1
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded merkle_hash v3.5.0
[INFO] [stderr]   Downloaded winnow v0.5.28
[INFO] [stderr]   Downloaded lexopt v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 6e42dce3a4e65d265193487dd5ae89c3e6300133e257fafdd3306a1d0cce102d
[INFO] running `Command { std: "docker" "start" "-a" "6e42dce3a4e65d265193487dd5ae89c3e6300133e257fafdd3306a1d0cce102d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e42dce3a4e65d265193487dd5ae89c3e6300133e257fafdd3306a1d0cce102d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e42dce3a4e65d265193487dd5ae89c3e6300133e257fafdd3306a1d0cce102d", kill_on_drop: false }`
[INFO] [stdout] 6e42dce3a4e65d265193487dd5ae89c3e6300133e257fafdd3306a1d0cce102d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e955da30896667a6a00bc8804a126240414a21cfc7461be2c9267afaceed2ca0
[INFO] running `Command { std: "docker" "start" "-a" "e955da30896667a6a00bc8804a126240414a21cfc7461be2c9267afaceed2ca0", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling yansi v1.0.0-rc.1
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]     Checking indexmap v2.1.0
[INFO] [stderr]    Compiling uncased v0.9.9
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling camino v1.1.6
[INFO] [stderr]     Checking winnow v0.5.28
[INFO] [stderr]    Compiling figment v0.10.12
[INFO] [stderr]    Compiling syn v2.0.40
[INFO] [stderr]     Checking constant_time_eq v0.3.0
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]     Checking inlinable_string v0.1.15
[INFO] [stderr]     Checking cpufeatures v0.2.11
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking copy_dir v0.1.3
[INFO] [stderr]     Checking lexopt v0.3.0
[INFO] [stderr]     Checking xxhash-rust v0.8.7
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking simple-logging v2.0.2
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]    Compiling blake3 v1.5.0
[INFO] [stderr]     Checking merkle_hash v3.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling pear_codegen v0.2.7
[INFO] [stderr]     Checking pear v0.2.7
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking serde_spanned v0.6.4
[INFO] [stderr]     Checking toml_edit v0.21.0
[INFO] [stderr]     Checking toml v0.8.8
[INFO] [stderr]     Checking rm-backup v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.16s
[INFO] running `Command { std: "docker" "inspect" "e955da30896667a6a00bc8804a126240414a21cfc7461be2c9267afaceed2ca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e955da30896667a6a00bc8804a126240414a21cfc7461be2c9267afaceed2ca0", kill_on_drop: false }`
[INFO] [stdout] e955da30896667a6a00bc8804a126240414a21cfc7461be2c9267afaceed2ca0
[INFO] checking elenakrittik/rm-backup against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felenakrittik%2Frm-backup" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elenakrittik/rm-backup 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/elenakrittik/rm-backup
[INFO] finished tweaking git repo https://github.com/elenakrittik/rm-backup
[INFO] tweaked toml for git repo https://github.com/elenakrittik/rm-backup written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/elenakrittik/rm-backup 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 1 package
[INFO] [stderr]     Updating rm-backup v0.1.0 (/workspace/builds/worker-4-tc2/source) -> v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 0c078184f0f3f9dfb6c51a89cca4e788b0eae80d4a08d201363283c4ce636ff8
[INFO] running `Command { std: "docker" "start" "-a" "0c078184f0f3f9dfb6c51a89cca4e788b0eae80d4a08d201363283c4ce636ff8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c078184f0f3f9dfb6c51a89cca4e788b0eae80d4a08d201363283c4ce636ff8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c078184f0f3f9dfb6c51a89cca4e788b0eae80d4a08d201363283c4ce636ff8", kill_on_drop: false }`
[INFO] [stdout] 0c078184f0f3f9dfb6c51a89cca4e788b0eae80d4a08d201363283c4ce636ff8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5f806d4e71e83f5f64dd8644bca3a2410beccf6c777bd0d1bb3576e208acd87d
[INFO] running `Command { std: "docker" "start" "-a" "5f806d4e71e83f5f64dd8644bca3a2410beccf6c777bd0d1bb3576e208acd87d", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]    Compiling yansi v1.0.0-rc.1
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling uncased v0.9.9
[INFO] [stderr]    Compiling syn v2.0.40
[INFO] [stderr]     Checking indexmap v2.1.0
[INFO] [stderr]    Compiling camino v1.1.6
[INFO] [stderr]     Checking winnow v0.5.28
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling figment v0.10.12
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]     Checking inlinable_string v0.1.15
[INFO] [stderr]     Checking cpufeatures v0.2.11
[INFO] [stderr]     Checking constant_time_eq v0.3.0
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking copy_dir v0.1.3
[INFO] [stderr]     Checking simple-logging v2.0.2
[INFO] [stderr]     Checking xxhash-rust v0.8.7
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking lexopt v0.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]    Compiling blake3 v1.5.0
[INFO] [stderr]     Checking merkle_hash v3.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling pear_codegen v0.2.7
[INFO] [stderr]     Checking pear v0.2.7
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking serde_spanned v0.6.4
[INFO] [stderr]     Checking toml_edit v0.21.0
[INFO] [stderr]     Checking toml v0.8.8
[INFO] [stderr]     Checking rm-backup v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.15s
[INFO] running `Command { std: "docker" "inspect" "5f806d4e71e83f5f64dd8644bca3a2410beccf6c777bd0d1bb3576e208acd87d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f806d4e71e83f5f64dd8644bca3a2410beccf6c777bd0d1bb3576e208acd87d", kill_on_drop: false }`
[INFO] [stdout] 5f806d4e71e83f5f64dd8644bca3a2410beccf6c777bd0d1bb3576e208acd87d