[INFO] fetching crate graph_csr 1.0.2...
[INFO] checking graph_csr-1.0.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate graph_csr 1.0.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate graph_csr 1.0.2 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 crates.io crate graph_csr 1.0.2
[INFO] finished tweaking crates.io crate graph_csr 1.0.2
[INFO] tweaked toml for crates.io crate graph_csr 1.0.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate graph_csr 1.0.2 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 easy_mmap v0.3.1
[INFO] [stderr]   Downloaded mmap v0.1.1
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d54fe143f69b19fa80f311af5bb6eb17df609ea42019d41daeec95e45f6d947a
[INFO] running `Command { std: "docker" "start" "-a" "d54fe143f69b19fa80f311af5bb6eb17df609ea42019d41daeec95e45f6d947a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d54fe143f69b19fa80f311af5bb6eb17df609ea42019d41daeec95e45f6d947a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d54fe143f69b19fa80f311af5bb6eb17df609ea42019d41daeec95e45f6d947a", kill_on_drop: false }`
[INFO] [stdout] d54fe143f69b19fa80f311af5bb6eb17df609ea42019d41daeec95e45f6d947a
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be8ddbff26a3a1da09816ec38be4703ee34a89744dd33b51e26ec887d531784e
[INFO] running `Command { std: "docker" "start" "-a" "be8ddbff26a3a1da09816ec38be4703ee34a89744dd33b51e26ec887d531784e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]     Checking once_cell v1.13.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling atomic v0.5.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.13.1
[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]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking mmap v0.1.1
[INFO] [stderr]     Checking easy_mmap v0.3.1
[INFO] [stderr]     Checking graph_csr v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `easy_mmap` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use easy_mmap::{self, EasyMmap, EasyMmapBuilder};
[INFO] [stdout]   |                 ^^^^ the item `easy_mmap` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `easy_mmap` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use easy_mmap::{self, EasyMmap, EasyMmapBuilder};
[INFO] [stdout]   |                 ^^^^ the item `easy_mmap` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]   --> src/reading.rs:13:23
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct GraphFiles(pub fs::File, pub fs::File, pub usize, pub usize);
[INFO] [stdout]    |            ---------- ^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct GraphFiles((), (), (), ());
[INFO] [stdout]    |                       ~~  ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]   --> src/reading.rs:13:23
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct GraphFiles(pub fs::File, pub fs::File, pub usize, pub usize);
[INFO] [stdout]    |            ---------- ^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct GraphFiles((), (), (), ());
[INFO] [stdout]    |                       ~~  ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "be8ddbff26a3a1da09816ec38be4703ee34a89744dd33b51e26ec887d531784e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be8ddbff26a3a1da09816ec38be4703ee34a89744dd33b51e26ec887d531784e", kill_on_drop: false }`
[INFO] [stdout] be8ddbff26a3a1da09816ec38be4703ee34a89744dd33b51e26ec887d531784e