[INFO] fetching crate sorter 0.4.0...
[INFO] testing sorter-0.4.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate sorter 0.4.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate sorter 0.4.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sorter 0.4.0
[INFO] finished tweaking crates.io crate sorter 0.4.0
[INFO] tweaked toml for crates.io crate sorter 0.4.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 74785302df3557bfd673adc5f7ec03d4ca89b68d1b6de4aff65de2bb43a72d00
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "74785302df3557bfd673adc5f7ec03d4ca89b68d1b6de4aff65de2bb43a72d00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74785302df3557bfd673adc5f7ec03d4ca89b68d1b6de4aff65de2bb43a72d00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74785302df3557bfd673adc5f7ec03d4ca89b68d1b6de4aff65de2bb43a72d00", kill_on_drop: false }`
[INFO] [stdout] 74785302df3557bfd673adc5f7ec03d4ca89b68d1b6de4aff65de2bb43a72d00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9caa73c4997909d0a0827a61dbe5db86fc3b930be4242ec3a13dc67755da9739
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9caa73c4997909d0a0827a61dbe5db86fc3b930be4242ec3a13dc67755da9739", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling sorter v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.13s
[INFO] running `Command { std: "docker" "inspect" "9caa73c4997909d0a0827a61dbe5db86fc3b930be4242ec3a13dc67755da9739", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9caa73c4997909d0a0827a61dbe5db86fc3b930be4242ec3a13dc67755da9739", kill_on_drop: false }`
[INFO] [stdout] 9caa73c4997909d0a0827a61dbe5db86fc3b930be4242ec3a13dc67755da9739
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a57caed852c326a6b9c2fd09e4bc75173f2f1423d067ac2476b4ccea482889be
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a57caed852c326a6b9c2fd09e4bc75173f2f1423d067ac2476b4ccea482889be", kill_on_drop: false }`
[INFO] [stderr]    Compiling sorter v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> tests/sorter.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::{Rng, thread_rng};
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `gen_iter` found for struct `ThreadRng` in the current scope
[INFO] [stdout]   --> tests/sorter.rs:23:34
[INFO] [stdout]    |
[INFO] [stdout] 23 |     make_test_vec = thread_rng().gen_iter::<i32>().take(1000).collect::<Vec<i32>>();
[INFO] [stdout]    |                                  ^^^^^^^^ method not found in `ThreadRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `gen_iter` found for struct `ThreadRng` in the current scope
[INFO] [stdout]   --> tests/sorter.rs:25:34
[INFO] [stdout]    |
[INFO] [stdout] 25 |     make_test_vec = thread_rng().gen_iter::<i32>().take(555).collect::<Vec<i32>>();
[INFO] [stdout]    |                                  ^^^^^^^^ method not found in `ThreadRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sorter` due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "a57caed852c326a6b9c2fd09e4bc75173f2f1423d067ac2476b4ccea482889be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a57caed852c326a6b9c2fd09e4bc75173f2f1423d067ac2476b4ccea482889be", kill_on_drop: false }`
[INFO] [stdout] a57caed852c326a6b9c2fd09e4bc75173f2f1423d067ac2476b4ccea482889be