[INFO] cloning repository https://github.com/Tomarchelone/PAC-FCA
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Tomarchelone/PAC-FCA" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomarchelone%2FPAC-FCA", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomarchelone%2FPAC-FCA'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] be750a34a02896a01ad5ebc96652ae1802ca41f7
[INFO] building Tomarchelone/PAC-FCA against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomarchelone%2FPAC-FCA" "/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/Tomarchelone/PAC-FCA on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Tomarchelone/PAC-FCA
[INFO] finished tweaking git repo https://github.com/Tomarchelone/PAC-FCA
[INFO] tweaked toml for git repo https://github.com/Tomarchelone/PAC-FCA written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Tomarchelone/PAC-FCA 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded autocfg v0.1.1
[INFO] [stderr]   Downloaded rand_os v0.1.0
[INFO] [stderr]   Downloaded rand v0.6.3
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7bfc2e1657e89fbdbd13daeda092be3b74675439790353abc820d48d4046ee0
[INFO] running `Command { std: "docker" "start" "-a" "a7bfc2e1657e89fbdbd13daeda092be3b74675439790353abc820d48d4046ee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7bfc2e1657e89fbdbd13daeda092be3b74675439790353abc820d48d4046ee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7bfc2e1657e89fbdbd13daeda092be3b74675439790353abc820d48d4046ee0", kill_on_drop: false }`
[INFO] [stdout] a7bfc2e1657e89fbdbd13daeda092be3b74675439790353abc820d48d4046ee0
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bdf0529e4e53602801c5396d62619474e5f608a24e41832204d9e1c1cd5355d
[INFO] running `Command { std: "docker" "start" "-a" "9bdf0529e4e53602801c5396d62619474e5f608a24e41832204d9e1c1cd5355d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling num_cpus v1.9.0
[INFO] [stderr]    Compiling rand_os v0.1.0
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling pac_fca v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::random`
[INFO] [stdout]  --> src/pac_fca.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::random;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> src/pac_fca.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/pac_fca.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 250 |     'main: loop {
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::zoo_oracle::*`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::zoo_oracle::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pac_fca.rs:243:16
[INFO] [stdout]     |
[INFO] [stdout] 243 |     , oracle: &Oracle
[INFO] [stdout]     |                ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 243 |     , oracle: &dyn Oracle
[INFO] [stdout]     |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `example`
[INFO] [stdout]   --> src/div_oracle.rs:57:25
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn is_member(&self, example: &Vec<u128>) -> bool {
[INFO] [stdout]    |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/zoo_oracle.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut animals: Vec<_> = contents
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/main.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let (imp_set, context) = pac_attribute_exploration(
[INFO] [stdout]    |                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elapsed`
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let elapsed = stamp.elapsed();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_elapsed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut stamp = Instant::now();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_member` is never used
[INFO] [stdout]  --> src/pac_fca.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Oracle {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 9 |     fn is_member(&self, example: &Vec<u128>) -> bool;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_data` is never used
[INFO] [stdout]   --> src/zoo_oracle.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl ZooOracle {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 14 |     pub fn from_data(mut data: File) -> ZooOracle {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `from_bool` is never used
[INFO] [stdout]   --> src/zoo_oracle.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn from_bool(v: Vec<bool>) -> Vec<u128> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `zoo_imp` is never used
[INFO] [stdout]   --> src/zoo_oracle.rs:99:8
[INFO] [stdout]    |
[INFO] [stdout] 99 | pub fn zoo_imp(impset: &ImplicationSet) -> String {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]   --> src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let M = 18;
[INFO] [stdout]    |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `M` should have a snake case name
[INFO] [stdout]   --> src/pac_fca.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub M: usize,  // size of attribute set
[INFO] [stdout]    |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `M` should have a snake case name
[INFO] [stdout]   --> src/pac_fca.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub M: usize,
[INFO] [stdout]    |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]   --> src/pac_fca.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let M = self.M;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:113:17
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub fn full_set(M: usize) -> Vec<u128> {
[INFO] [stdout]     |                 ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:124:18
[INFO] [stdout]     |
[INFO] [stdout] 124 | pub fn empty_set(M: usize) -> Vec<u128> {
[INFO] [stdout]     |                  ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:135:29
[INFO] [stdout]     |
[INFO] [stdout] 135 | pub fn not(set: &Vec<u128>, M: usize) -> Vec<u128> {
[INFO] [stdout]     |                             ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:187:18
[INFO] [stdout]     |
[INFO] [stdout] 187 | fn random_subset(M: usize) -> Vec<u128> {
[INFO] [stdout]     |                  ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:206:5
[INFO] [stdout]     |
[INFO] [stdout] 206 |     M: usize  // Attribute set 0..M
[INFO] [stdout]     |     ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `K` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:207:7
[INFO] [stdout]     |
[INFO] [stdout] 207 |     , K: &Context  // Context
[INFO] [stdout]     |       ^ help: convert the identifier to snake case (notice the capitalization): `k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `L` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:208:7
[INFO] [stdout]     |
[INFO] [stdout] 208 |     , L: &ImplicationSet  // Implication set
[INFO] [stdout]     |       ^ help: convert the identifier to snake case: `l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:239:5
[INFO] [stdout]     |
[INFO] [stdout] 239 |     M: usize
[INFO] [stdout]     |     ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `K_0` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:240:7
[INFO] [stdout]     |
[INFO] [stdout] 240 |     , K_0: Context
[INFO] [stdout]     |       ^^^ help: convert the identifier to snake case (notice the capitalization): `k_0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `K` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:247:13
[INFO] [stdout]     |
[INFO] [stdout] 247 |     let mut K = K_0; // initial context
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `L` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:248:13
[INFO] [stdout]     |
[INFO] [stdout] 248 |     let mut L = ImplicationSet {M, set: vec![]};
[INFO] [stdout]     |             ^ help: convert the identifier to snake case: `l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `M` should have a snake case name
[INFO] [stdout]   --> src/div_oracle.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub M: usize,
[INFO] [stdout]    |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]   --> src/div_oracle.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let M = self.M;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `M` should have a snake case name
[INFO] [stdout]  --> src/zoo_oracle.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub M: usize,
[INFO] [stdout]   |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]   --> src/zoo_oracle.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let mut M = 0;
[INFO] [stdout]    |                 ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]   --> src/zoo_oracle.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let M = self.M;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]   --> src/zoo_oracle.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let M = v.len();
[INFO] [stdout]    |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/zoo_oracle.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let M = impset.M;
[INFO] [stdout]     |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `Command { std: "docker" "inspect" "9bdf0529e4e53602801c5396d62619474e5f608a24e41832204d9e1c1cd5355d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bdf0529e4e53602801c5396d62619474e5f608a24e41832204d9e1c1cd5355d", kill_on_drop: false }`
[INFO] [stdout] 9bdf0529e4e53602801c5396d62619474e5f608a24e41832204d9e1c1cd5355d
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1ac3614c56c16fc22c5d008e055e3af70d98564d2b205febca6024f2de77b9c
[INFO] running `Command { std: "docker" "start" "-a" "e1ac3614c56c16fc22c5d008e055e3af70d98564d2b205febca6024f2de77b9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling pac_fca v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::random`
[INFO] [stdout]  --> src/pac_fca.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::random;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> src/pac_fca.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/pac_fca.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 250 |     'main: loop {
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::zoo_oracle::*`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::zoo_oracle::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pac_fca.rs:243:16
[INFO] [stdout]     |
[INFO] [stdout] 243 |     , oracle: &Oracle
[INFO] [stdout]     |                ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 243 |     , oracle: &dyn Oracle
[INFO] [stdout]     |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `example`
[INFO] [stdout]   --> src/div_oracle.rs:57:25
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn is_member(&self, example: &Vec<u128>) -> bool {
[INFO] [stdout]    |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/zoo_oracle.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut animals: Vec<_> = contents
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/main.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let (imp_set, context) = pac_attribute_exploration(
[INFO] [stdout]    |                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elapsed`
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let elapsed = stamp.elapsed();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_elapsed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut stamp = Instant::now();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_member` is never used
[INFO] [stdout]  --> src/pac_fca.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Oracle {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 9 |     fn is_member(&self, example: &Vec<u128>) -> bool;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_data` is never used
[INFO] [stdout]   --> src/zoo_oracle.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl ZooOracle {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 14 |     pub fn from_data(mut data: File) -> ZooOracle {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `from_bool` is never used
[INFO] [stdout]   --> src/zoo_oracle.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn from_bool(v: Vec<bool>) -> Vec<u128> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `zoo_imp` is never used
[INFO] [stdout]   --> src/zoo_oracle.rs:99:8
[INFO] [stdout]    |
[INFO] [stdout] 99 | pub fn zoo_imp(impset: &ImplicationSet) -> String {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]   --> src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let M = 18;
[INFO] [stdout]    |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `M` should have a snake case name
[INFO] [stdout]   --> src/pac_fca.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub M: usize,  // size of attribute set
[INFO] [stdout]    |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `M` should have a snake case name
[INFO] [stdout]   --> src/pac_fca.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub M: usize,
[INFO] [stdout]    |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]   --> src/pac_fca.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let M = self.M;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:113:17
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub fn full_set(M: usize) -> Vec<u128> {
[INFO] [stdout]     |                 ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:124:18
[INFO] [stdout]     |
[INFO] [stdout] 124 | pub fn empty_set(M: usize) -> Vec<u128> {
[INFO] [stdout]     |                  ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:135:29
[INFO] [stdout]     |
[INFO] [stdout] 135 | pub fn not(set: &Vec<u128>, M: usize) -> Vec<u128> {
[INFO] [stdout]     |                             ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:187:18
[INFO] [stdout]     |
[INFO] [stdout] 187 | fn random_subset(M: usize) -> Vec<u128> {
[INFO] [stdout]     |                  ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:206:5
[INFO] [stdout]     |
[INFO] [stdout] 206 |     M: usize  // Attribute set 0..M
[INFO] [stdout]     |     ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `K` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:207:7
[INFO] [stdout]     |
[INFO] [stdout] 207 |     , K: &Context  // Context
[INFO] [stdout]     |       ^ help: convert the identifier to snake case (notice the capitalization): `k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `L` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:208:7
[INFO] [stdout]     |
[INFO] [stdout] 208 |     , L: &ImplicationSet  // Implication set
[INFO] [stdout]     |       ^ help: convert the identifier to snake case: `l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:239:5
[INFO] [stdout]     |
[INFO] [stdout] 239 |     M: usize
[INFO] [stdout]     |     ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `K_0` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:240:7
[INFO] [stdout]     |
[INFO] [stdout] 240 |     , K_0: Context
[INFO] [stdout]     |       ^^^ help: convert the identifier to snake case (notice the capitalization): `k_0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `K` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:247:13
[INFO] [stdout]     |
[INFO] [stdout] 247 |     let mut K = K_0; // initial context
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `L` should have a snake case name
[INFO] [stdout]    --> src/pac_fca.rs:248:13
[INFO] [stdout]     |
[INFO] [stdout] 248 |     let mut L = ImplicationSet {M, set: vec![]};
[INFO] [stdout]     |             ^ help: convert the identifier to snake case: `l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `M` should have a snake case name
[INFO] [stdout]   --> src/div_oracle.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub M: usize,
[INFO] [stdout]    |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]   --> src/div_oracle.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let M = self.M;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `M` should have a snake case name
[INFO] [stdout]  --> src/zoo_oracle.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub M: usize,
[INFO] [stdout]   |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]   --> src/zoo_oracle.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let mut M = 0;
[INFO] [stdout]    |                 ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]   --> src/zoo_oracle.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let M = self.M;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]   --> src/zoo_oracle.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let M = v.len();
[INFO] [stdout]    |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/zoo_oracle.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let M = impset.M;
[INFO] [stdout]     |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "e1ac3614c56c16fc22c5d008e055e3af70d98564d2b205febca6024f2de77b9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1ac3614c56c16fc22c5d008e055e3af70d98564d2b205febca6024f2de77b9c", kill_on_drop: false }`
[INFO] [stdout] e1ac3614c56c16fc22c5d008e055e3af70d98564d2b205febca6024f2de77b9c