[INFO] fetching crate pelt 0.1.0...
[INFO] testing pelt-0.1.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate pelt 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate pelt 0.1.0
[INFO] finished tweaking crates.io crate pelt 0.1.0
[INFO] tweaked toml for crates.io crate pelt 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pelt 0.1.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pelt 0.1.0 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df1d23cf103f225a3d36b0263667a40b9a51dcd3bf96c4d3512da63c66a0fa17
[INFO] running `Command { std: "docker" "start" "-a" "df1d23cf103f225a3d36b0263667a40b9a51dcd3bf96c4d3512da63c66a0fa17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df1d23cf103f225a3d36b0263667a40b9a51dcd3bf96c4d3512da63c66a0fa17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df1d23cf103f225a3d36b0263667a40b9a51dcd3bf96c4d3512da63c66a0fa17", kill_on_drop: false }`
[INFO] [stdout] df1d23cf103f225a3d36b0263667a40b9a51dcd3bf96c4d3512da63c66a0fa17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a820d8a88ce1faf01f2e56ba7f07f1a0dd8cd1bf8c89b840f8a3d945dc0f1e1
[INFO] running `Command { std: "docker" "start" "-a" "8a820d8a88ce1faf01f2e56ba7f07f1a0dd8cd1bf8c89b840f8a3d945dc0f1e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling pelt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `slice_partition_at_index`
[INFO] [stdout]   --> src/lib.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | #![feature(slice_partition_at_index)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `partition_at_index_by` found for struct `Vec<f64>` in the current scope
[INFO] [stdout]   --> src/cost.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |         *x.partition_at_index_by(idx, |a, b| a.partial_cmp(b).unwrap())
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `partition_point` with a similar name, but with different arguments
[INFO] [stdout]   --> /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/slice/mod.rs:4413:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/alg.rs:139:27
[INFO] [stdout]     |
[INFO] [stdout] 139 |                 .filter(|(t, sum_loss)| sum_loss < &(loss_current_part))
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum_loss`
[INFO] [stdout]    --> src/alg.rs:141:27
[INFO] [stdout]     |
[INFO] [stdout] 141 |                 .map(|(t, sum_loss)| *t)
[INFO] [stdout]     |                           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sum_loss`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/alg.rs:145:57
[INFO] [stdout]     |
[INFO] [stdout] 145 |         let mut cp: Vec<usize> = best_part.keys().map(|(start, end)| *end).collect();
[INFO] [stdout]     |                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pelt` (lib) due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "8a820d8a88ce1faf01f2e56ba7f07f1a0dd8cd1bf8c89b840f8a3d945dc0f1e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a820d8a88ce1faf01f2e56ba7f07f1a0dd8cd1bf8c89b840f8a3d945dc0f1e1", kill_on_drop: false }`
[INFO] [stdout] 8a820d8a88ce1faf01f2e56ba7f07f1a0dd8cd1bf8c89b840f8a3d945dc0f1e1