[INFO] cloning repository https://github.com/mecios01/orario_borsisti
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mecios01/orario_borsisti" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmecios01%2Forario_borsisti", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmecios01%2Forario_borsisti'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 636d891fef35b4c1e57216764d4bbf2939ddad0d
[INFO] testing mecios01/orario_borsisti against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmecios01%2Forario_borsisti" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mecios01/orario_borsisti
[INFO] finished tweaking git repo https://github.com/mecios01/orario_borsisti
[INFO] tweaked toml for git repo https://github.com/mecios01/orario_borsisti written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mecios01/orario_borsisti on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mecios01/orario_borsisti 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] afb941cf102b868c1c19a339905a83fcf214d0648b8da8e0fea802cb359a9a96
[INFO] running `Command { std: "docker" "start" "-a" "afb941cf102b868c1c19a339905a83fcf214d0648b8da8e0fea802cb359a9a96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afb941cf102b868c1c19a339905a83fcf214d0648b8da8e0fea802cb359a9a96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afb941cf102b868c1c19a339905a83fcf214d0648b8da8e0fea802cb359a9a96", kill_on_drop: false }`
[INFO] [stdout] afb941cf102b868c1c19a339905a83fcf214d0648b8da8e0fea802cb359a9a96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b0f6a2822f53ba54ee962942f95025e81455163eccb99239927a3e253742d6c
[INFO] running `Command { std: "docker" "start" "-a" "8b0f6a2822f53ba54ee962942f95025e81455163eccb99239927a3e253742d6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling coin_cbc_sys v0.1.2
[INFO] [stderr]    Compiling coin_cbc v0.1.8
[INFO] [stderr]    Compiling good_lp v1.7.0
[INFO] [stderr]    Compiling orario_borsisti v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TurnHours`
[INFO] [stdout]  --> src/main.rs:2:42
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::types::timetable::{Timetable, TurnHours, Turn, Day};
[INFO] [stdout]   |                                          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/types/person.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TurnHours`
[INFO] [stdout]  --> src/types/person.rs:2:42
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::types::timetable::{Day, Turn, TurnHours};
[INFO] [stdout]   |                                          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::types::scheduler`
[INFO] [stdout]  --> src/types/timetable.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::types::scheduler;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/types/scheduler.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Sub`
[INFO] [stdout]  --> src/types/scheduler.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Sub;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `constraint`
[INFO] [stdout]  --> src/types/scheduler.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | use good_lp::{Constraint, constraint, default_solver, Expression, ProblemVariables, Solution, SolverModel, Variable, VariableDefinition, ...
[INFO] [stdout]   |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `good_lp::variable::FormatWithVars`
[INFO] [stdout]  --> src/types/scheduler.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use good_lp::variable::FormatWithVars;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `preferences`
[INFO] [stdout]    --> src/types/scheduler.rs:268:18
[INFO] [stdout]     |
[INFO] [stdout] 268 |                  preferences: &Vec<Vec<Vec<bool>>>, remaining: &Vec<f64>)
[INFO] [stdout]     |                  ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_preferences`
[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/types/scheduler.rs:271:9
[INFO] [stdout]     |
[INFO] [stdout] 271 |     let mut caledar: Vec<(usize, usize)> = Vec::new();
[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: associated function `new` is never used
[INFO] [stdout]   --> src/types/person.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Person {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn new(name: &str, surname: &str) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `name` is never used
[INFO] [stdout]   --> src/types/timetable.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Day {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] 15 |     fn name(&self) -> &'static str {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/types/timetable.rs:33:22
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct TurnHours(f32);
[INFO] [stdout]    |            --------- ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `TurnHours` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `computed`, `stats`, and `base` are never read
[INFO] [stdout]   --> src/types/timetable.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Timetable {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 36 |     computed: Option<Vec<(Person, Person)>>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 37 |     //stats per person
[INFO] [stdout] 38 |     stats: Option<()>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 39 |     //hours per turn
[INFO] [stdout] 40 |     base: Vec<(TurnHours, TurnHours)>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `with_turnhours`, `add_person`, and `set_turnhours` are never used
[INFO] [stdout]   --> src/types/timetable.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 61 | impl Timetable {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn with_turnhours(base: &[(TurnHours, TurnHours)]) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub fn add_person(&mut self, p: Person) -> &mut Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |     pub fn set_turnhours(&mut self, turnhours: Vec<(TurnHours, TurnHours)>) -> &mut Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NoConsecutiveShifts` is never constructed
[INFO] [stdout]   --> src/types/scheduler.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum ConstraintType {
[INFO] [stdout]    |          -------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 13 |     NoConsecutiveShifts,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `max_hours_per_week` and `min_hours_per_week` are never read
[INFO] [stdout]   --> src/types/scheduler.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Scheduler {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 17 |     ///model constants
[INFO] [stdout] 18 |     max_hours_per_week: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 19 |     min_hours_per_week: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `output_result` is never used
[INFO] [stdout]    --> src/types/scheduler.rs:267:4
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn output_result(solution: &CoinCbcSolution, variables: Vec<Vec<Vec<Variable>>>,
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/types/timetable.rs:122:25
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 assert!(d >= 0 && d < 5);
[INFO] [stdout]     |                         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note:  "cc" "-m64" "/tmp/rustcr3Rgvc/symbols.o" "<6 object files omitted>" "-Wl,--as-needed" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/{libgood_lp-8f318fe76b6ae82f.rlib,libcoin_cbc-af6adafcf7642754.rlib,liblazy_static-4a3eb30d8f892632.rlib,libcoin_cbc_sys-02390e34bd39292c.rlib,libfnv-cad931e6de93593b.rlib}.rlib" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libstd-*,libpanic_unwind-*,libobject-*,libmemchr-*,libaddr2line-*,libgimli-*,librustc_demangle-*,libstd_detect-*,libhashbrown-*,librustc_std_workspace_alloc-*,libminiz_oxide-*,libadler2-*,libunwind-*,libcfg_if-*,liblibc-*,librustc_std_workspace_core-*,liballoc-*,libcore-*,libcompiler_builtins-*}.rlib" "-Wl,-Bdynamic" "-lCbcSolver" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-L" "/tmp/rustcr3Rgvc/raw-dylibs" "-B<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,-znostart-stop-gc" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/orario_borsisti-d56292d495018183" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-Wl,-O1" "-nodefaultlibs"
[INFO] [stdout]   = note: some arguments are omitted. use `--verbose` to show all linker arguments
[INFO] [stdout]   = note: rust-lld: error: unable to find library -lCbcSolver
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `orario_borsisti` (bin "orario_borsisti") due to 1 previous error; 19 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "8b0f6a2822f53ba54ee962942f95025e81455163eccb99239927a3e253742d6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b0f6a2822f53ba54ee962942f95025e81455163eccb99239927a3e253742d6c", kill_on_drop: false }`
[INFO] [stdout] 8b0f6a2822f53ba54ee962942f95025e81455163eccb99239927a3e253742d6c