[INFO] cloning repository https://github.com/bes/large-file-finder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bes/large-file-finder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbes%2Flarge-file-finder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbes%2Flarge-file-finder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fed4da970c469249e95ca399d67e0d4a136644f3
[INFO] checking bes/large-file-finder against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbes%2Flarge-file-finder" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bes/large-file-finder 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/bes/large-file-finder
[INFO] finished tweaking git repo https://github.com/bes/large-file-finder
[INFO] tweaked toml for git repo https://github.com/bes/large-file-finder written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bes/large-file-finder 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]  Downloading crates ...
[INFO] [stderr]   Downloaded bstr v1.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c85447e45caff015b26d154dcd260cd4c6bd574f260bd8a86f4281da3b34e00a
[INFO] running `Command { std: "docker" "start" "-a" "c85447e45caff015b26d154dcd260cd4c6bd574f260bd8a86f4281da3b34e00a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c85447e45caff015b26d154dcd260cd4c6bd574f260bd8a86f4281da3b34e00a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c85447e45caff015b26d154dcd260cd4c6bd574f260bd8a86f4281da3b34e00a", kill_on_drop: false }`
[INFO] [stdout] c85447e45caff015b26d154dcd260cd4c6bd574f260bd8a86f4281da3b34e00a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 108d58170b56d2f2c46985821bb705424a601f24c87bc4144bdf7fef709dc2db
[INFO] running `Command { std: "docker" "start" "-a" "108d58170b56d2f2c46985821bb705424a601f24c87bc4144bdf7fef709dc2db", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking bstr v1.9.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking shellexpand v3.1.0
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking globset v0.4.14
[INFO] [stderr]     Checking ignore v0.4.22
[INFO] [stderr]     Checking lff v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `path` and `is_file` are never used
[INFO] [stdout]    --> src/main.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | trait FileData {
[INFO] [stdout]     |       -------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 153 |     fn path(&self) -> Cow<str>;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 154 |     fn is_file(&self) -> bool;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `path` and `is_file` are never used
[INFO] [stdout]    --> src/main.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | trait FileData {
[INFO] [stdout]     |       -------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 153 |     fn path(&self) -> Cow<str>;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 154 |     fn is_file(&self) -> bool;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.74s
[INFO] running `Command { std: "docker" "inspect" "108d58170b56d2f2c46985821bb705424a601f24c87bc4144bdf7fef709dc2db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "108d58170b56d2f2c46985821bb705424a601f24c87bc4144bdf7fef709dc2db", kill_on_drop: false }`
[INFO] [stdout] 108d58170b56d2f2c46985821bb705424a601f24c87bc4144bdf7fef709dc2db
[INFO] checking bes/large-file-finder against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbes%2Flarge-file-finder" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bes/large-file-finder 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/bes/large-file-finder
[INFO] finished tweaking git repo https://github.com/bes/large-file-finder
[INFO] tweaked toml for git repo https://github.com/bes/large-file-finder written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/bes/large-file-finder 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 8f986a0beb02dd967bb2cd58690591be25e24691360f5ee8d306c68593c4a140
[INFO] running `Command { std: "docker" "start" "-a" "8f986a0beb02dd967bb2cd58690591be25e24691360f5ee8d306c68593c4a140", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f986a0beb02dd967bb2cd58690591be25e24691360f5ee8d306c68593c4a140", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f986a0beb02dd967bb2cd58690591be25e24691360f5ee8d306c68593c4a140", kill_on_drop: false }`
[INFO] [stdout] 8f986a0beb02dd967bb2cd58690591be25e24691360f5ee8d306c68593c4a140
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 25fbd5e0b1f0b78ef886509e23e1e529d15806cd1860184206fc044716bc256c
[INFO] running `Command { std: "docker" "start" "-a" "25fbd5e0b1f0b78ef886509e23e1e529d15806cd1860184206fc044716bc256c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking bstr v1.9.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking shellexpand v3.1.0
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking globset v0.4.14
[INFO] [stderr]     Checking ignore v0.4.22
[INFO] [stderr]     Checking lff v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `path` and `is_file` are never used
[INFO] [stdout]    --> src/main.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | trait FileData {
[INFO] [stdout]     |       -------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 153 |     fn path(&self) -> Cow<str>;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 154 |     fn is_file(&self) -> bool;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `path` and `is_file` are never used
[INFO] [stdout]    --> src/main.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | trait FileData {
[INFO] [stdout]     |       -------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 153 |     fn path(&self) -> Cow<str>;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 154 |     fn is_file(&self) -> bool;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.83s
[INFO] running `Command { std: "docker" "inspect" "25fbd5e0b1f0b78ef886509e23e1e529d15806cd1860184206fc044716bc256c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25fbd5e0b1f0b78ef886509e23e1e529d15806cd1860184206fc044716bc256c", kill_on_drop: false }`
[INFO] [stdout] 25fbd5e0b1f0b78ef886509e23e1e529d15806cd1860184206fc044716bc256c