[INFO] crate YieldSimRust 0.1.2 is already in cache
[INFO] testing YieldSimRust-0.1.2 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate YieldSimRust 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate YieldSimRust 0.1.2 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate YieldSimRust 0.1.2
[INFO] finished tweaking crates.io crate YieldSimRust 0.1.2
[INFO] tweaked toml for crates.io crate YieldSimRust 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate YieldSimRust 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7eb375cc74142e7174227fb266af9ae411dceb47b4d395d71c37d62a3245700d
[INFO] running `"docker" "start" "-a" "7eb375cc74142e7174227fb266af9ae411dceb47b4d395d71c37d62a3245700d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling YieldSimRust v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |     for i in 0..100 {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `counter` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut counter: i64 = 0;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_counter` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `running_f` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut running_f: Vec<f64> = vec![];
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_running_f` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `running_f` is never read
[INFO] [stderr]   --> src/annealer/brute_force.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 running_f = f;
[INFO] [stderr]    |                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `counter` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let mut counter: i64 = 0;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_counter` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `running_f` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let mut running_f: Vec<f64> = vec![];
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_running_f` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `running_f` is never read
[INFO] [stderr]   --> src/annealer/brute_force.rs:48:21
[INFO] [stderr]    |
[INFO] [stderr] 48 |                     running_f = f;
[INFO] [stderr]    |                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `counter` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let mut counter: i64 = 0;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_counter` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `running_f` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut running_f: Vec<f64> = vec![];
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_running_f` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `running_f` is never read
[INFO] [stderr]   --> src/annealer/brute_force.rs:76:25
[INFO] [stderr]    |
[INFO] [stderr] 76 |                         running_f = f;
[INFO] [stderr]    |                         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `running_f` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |     let mut running_f: Vec<f64> = vec![];
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_running_f` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `running_f` is never read
[INFO] [stderr]    --> src/annealer/brute_force.rs:110:33
[INFO] [stderr]     |
[INFO] [stderr] 110 | ...                   running_f = f;
[INFO] [stderr]     |                       ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/annealer/anneal.rs:248:13
[INFO] [stderr]     |
[INFO] [stderr] 248 |         let mut new_f: Vec<f64> = (0..chip.qubit_num)
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/annealer/anneal.rs:251:17
[INFO] [stderr]     |
[INFO] [stderr] 251 |         let (_, mut temp_yield_rate) =
[INFO] [stderr]     |                 ----^^^^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut f: Vec<f64> = vec![5.00, 5.07, 5.13, 5.20, 5.27, 5.00];
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut f: Vec<f64> = vec![5.00, 5.07, 5.13, 5.20, 5.27, 5.00, 5.07, 5.13, 5.20, 5.27];
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let mut f: Vec<f64> = vec![
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let mut f: Vec<f64> = vec![
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let mut f: Vec<f64> = vec![
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let mut f: Vec<f64> = vec![
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/brute_force.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 |             let mut f = vec![*i1, *i2];
[INFO] [stderr]    |                 ----^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/brute_force.rs:42:21
[INFO] [stderr]    |
[INFO] [stderr] 42 |                 let mut f = vec![*i1, *i2, *i3];
[INFO] [stderr]    |                     ----^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/brute_force.rs:70:25
[INFO] [stderr]    |
[INFO] [stderr] 70 |                     let mut f = vec![*i1, *i2, *i3, *i4];
[INFO] [stderr]    |                         ----^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/annealer/brute_force.rs:101:33
[INFO] [stderr]     |
[INFO] [stderr] 101 | ...                   let mut f = vec![*i1, *i2, *i3, *i4, *i5, *i6];
[INFO] [stderr]     |                           ----^
[INFO] [stderr]     |                           |
[INFO] [stderr]     |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: crate `YieldSimRust` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `yield_sim_rust`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `IBM17Q2B` should have a snake case name
[INFO] [stderr]   --> src/main.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut IBM17Q2B: chip_info::ChipInfo = chip_info::ChipInfo::new(
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `ibm17_q2_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/helper.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     writeln!(file, "{}", yields_string.join("\n"));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/helper.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     writeln!(file, "{}", final_string.join("\n"));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: constant `number_of_trials` should have an upper case name
[INFO] [stderr]   --> src/simulation.rs:89:11
[INFO] [stderr]    |
[INFO] [stderr] 89 |     const number_of_trials: usize = 10000;
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `NUMBER_OF_TRIALS`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 29 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.95s
[INFO] running `"docker" "inspect" "7eb375cc74142e7174227fb266af9ae411dceb47b4d395d71c37d62a3245700d"`
[INFO] running `"docker" "rm" "-f" "7eb375cc74142e7174227fb266af9ae411dceb47b4d395d71c37d62a3245700d"`
[INFO] [stdout] 7eb375cc74142e7174227fb266af9ae411dceb47b4d395d71c37d62a3245700d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 70c92a82d819dbaea89d277d8d35b1d67148527791629248a5266072c2dfe762
[INFO] running `"docker" "start" "-a" "70c92a82d819dbaea89d277d8d35b1d67148527791629248a5266072c2dfe762"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling YieldSimRust v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |     for i in 0..100 {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `counter` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut counter: i64 = 0;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_counter` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `running_f` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut running_f: Vec<f64> = vec![];
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_running_f` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `running_f` is never read
[INFO] [stderr]   --> src/annealer/brute_force.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 running_f = f;
[INFO] [stderr]    |                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `counter` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let mut counter: i64 = 0;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_counter` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `running_f` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let mut running_f: Vec<f64> = vec![];
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_running_f` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `running_f` is never read
[INFO] [stderr]   --> src/annealer/brute_force.rs:48:21
[INFO] [stderr]    |
[INFO] [stderr] 48 |                     running_f = f;
[INFO] [stderr]    |                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `counter` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let mut counter: i64 = 0;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_counter` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `running_f` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut running_f: Vec<f64> = vec![];
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_running_f` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `running_f` is never read
[INFO] [stderr]   --> src/annealer/brute_force.rs:76:25
[INFO] [stderr]    |
[INFO] [stderr] 76 |                         running_f = f;
[INFO] [stderr]    |                         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `running_f` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |     let mut running_f: Vec<f64> = vec![];
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_running_f` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `running_f` is never read
[INFO] [stderr]    --> src/annealer/brute_force.rs:110:33
[INFO] [stderr]     |
[INFO] [stderr] 110 | ...                   running_f = f;
[INFO] [stderr]     |                       ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/annealer/anneal.rs:248:13
[INFO] [stderr]     |
[INFO] [stderr] 248 |         let mut new_f: Vec<f64> = (0..chip.qubit_num)
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/annealer/anneal.rs:251:17
[INFO] [stderr]     |
[INFO] [stderr] 251 |         let (_, mut temp_yield_rate) =
[INFO] [stderr]     |                 ----^^^^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut f: Vec<f64> = vec![5.00, 5.07, 5.13, 5.20, 5.27, 5.00];
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut f: Vec<f64> = vec![5.00, 5.07, 5.13, 5.20, 5.27, 5.00, 5.07, 5.13, 5.20, 5.27];
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let mut f: Vec<f64> = vec![
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let mut f: Vec<f64> = vec![
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let mut f: Vec<f64> = vec![
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let mut f: Vec<f64> = vec![
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/brute_force.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 |             let mut f = vec![*i1, *i2];
[INFO] [stderr]    |                 ----^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/brute_force.rs:42:21
[INFO] [stderr]    |
[INFO] [stderr] 42 |                 let mut f = vec![*i1, *i2, *i3];
[INFO] [stderr]    |                     ----^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/brute_force.rs:70:25
[INFO] [stderr]    |
[INFO] [stderr] 70 |                     let mut f = vec![*i1, *i2, *i3, *i4];
[INFO] [stderr]    |                         ----^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/annealer/brute_force.rs:101:33
[INFO] [stderr]     |
[INFO] [stderr] 101 | ...                   let mut f = vec![*i1, *i2, *i3, *i4, *i5, *i6];
[INFO] [stderr]     |                           ----^
[INFO] [stderr]     |                           |
[INFO] [stderr]     |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: crate `YieldSimRust` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `yield_sim_rust`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `IBM17Q2B` should have a snake case name
[INFO] [stderr]   --> src/main.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut IBM17Q2B: chip_info::ChipInfo = chip_info::ChipInfo::new(
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `ibm17_q2_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/helper.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     writeln!(file, "{}", yields_string.join("\n"));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/helper.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     writeln!(file, "{}", final_string.join("\n"));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: constant `number_of_trials` should have an upper case name
[INFO] [stderr]   --> src/simulation.rs:89:11
[INFO] [stderr]    |
[INFO] [stderr] 89 |     const number_of_trials: usize = 10000;
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `NUMBER_OF_TRIALS`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 29 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "70c92a82d819dbaea89d277d8d35b1d67148527791629248a5266072c2dfe762"`
[INFO] running `"docker" "rm" "-f" "70c92a82d819dbaea89d277d8d35b1d67148527791629248a5266072c2dfe762"`
[INFO] [stdout] 70c92a82d819dbaea89d277d8d35b1d67148527791629248a5266072c2dfe762
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stdout] 3c5a3a9b796d63a2a4c4bd48d858aee7c7922f1e4f7bccf74017f0ea755942df
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "3c5a3a9b796d63a2a4c4bd48d858aee7c7922f1e4f7bccf74017f0ea755942df"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |     for i in 0..100 {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `counter` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut counter: i64 = 0;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_counter` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `running_f` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut running_f: Vec<f64> = vec![];
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_running_f` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `running_f` is never read
[INFO] [stderr]   --> src/annealer/brute_force.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 running_f = f;
[INFO] [stderr]    |                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `counter` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let mut counter: i64 = 0;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_counter` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `running_f` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let mut running_f: Vec<f64> = vec![];
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_running_f` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `running_f` is never read
[INFO] [stderr]   --> src/annealer/brute_force.rs:48:21
[INFO] [stderr]    |
[INFO] [stderr] 48 |                     running_f = f;
[INFO] [stderr]    |                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `counter` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let mut counter: i64 = 0;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_counter` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `running_f` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut running_f: Vec<f64> = vec![];
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_running_f` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `running_f` is never read
[INFO] [stderr]   --> src/annealer/brute_force.rs:76:25
[INFO] [stderr]    |
[INFO] [stderr] 76 |                         running_f = f;
[INFO] [stderr]    |                         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `running_f` is assigned to, but never used
[INFO] [stderr]   --> src/annealer/brute_force.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |     let mut running_f: Vec<f64> = vec![];
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_running_f` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `running_f` is never read
[INFO] [stderr]    --> src/annealer/brute_force.rs:110:33
[INFO] [stderr]     |
[INFO] [stderr] 110 | ...                   running_f = f;
[INFO] [stderr]     |                       ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/annealer/anneal.rs:248:13
[INFO] [stderr]     |
[INFO] [stderr] 248 |         let mut new_f: Vec<f64> = (0..chip.qubit_num)
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/annealer/anneal.rs:251:17
[INFO] [stderr]     |
[INFO] [stderr] 251 |         let (_, mut temp_yield_rate) =
[INFO] [stderr]     |                 ----^^^^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut f: Vec<f64> = vec![5.00, 5.07, 5.13, 5.20, 5.27, 5.00];
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut f: Vec<f64> = vec![5.00, 5.07, 5.13, 5.20, 5.27, 5.00, 5.07, 5.13, 5.20, 5.27];
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let mut f: Vec<f64> = vec![
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let mut f: Vec<f64> = vec![
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let mut f: Vec<f64> = vec![
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/base_line.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let mut f: Vec<f64> = vec![
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/brute_force.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 |             let mut f = vec![*i1, *i2];
[INFO] [stderr]    |                 ----^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/brute_force.rs:42:21
[INFO] [stderr]    |
[INFO] [stderr] 42 |                 let mut f = vec![*i1, *i2, *i3];
[INFO] [stderr]    |                     ----^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/annealer/brute_force.rs:70:25
[INFO] [stderr]    |
[INFO] [stderr] 70 |                     let mut f = vec![*i1, *i2, *i3, *i4];
[INFO] [stderr]    |                         ----^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/annealer/brute_force.rs:101:33
[INFO] [stderr]     |
[INFO] [stderr] 101 | ...                   let mut f = vec![*i1, *i2, *i3, *i4, *i5, *i6];
[INFO] [stderr]     |                           ----^
[INFO] [stderr]     |                           |
[INFO] [stderr]     |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: crate `YieldSimRust` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `yield_sim_rust`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `IBM17Q2B` should have a snake case name
[INFO] [stderr]   --> src/main.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut IBM17Q2B: chip_info::ChipInfo = chip_info::ChipInfo::new(
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `ibm17_q2_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/helper.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     writeln!(file, "{}", yields_string.join("\n"));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/helper.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     writeln!(file, "{}", final_string.join("\n"));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: constant `number_of_trials` should have an upper case name
[INFO] [stderr]   --> src/simulation.rs:89:11
[INFO] [stderr]    |
[INFO] [stderr] 89 |     const number_of_trials: usize = 10000;
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `NUMBER_OF_TRIALS`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 29 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/YieldSimRust-ef224a964a4e9699
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "3c5a3a9b796d63a2a4c4bd48d858aee7c7922f1e4f7bccf74017f0ea755942df"`
[INFO] running `"docker" "rm" "-f" "3c5a3a9b796d63a2a4c4bd48d858aee7c7922f1e4f7bccf74017f0ea755942df"`
[INFO] [stdout] 3c5a3a9b796d63a2a4c4bd48d858aee7c7922f1e4f7bccf74017f0ea755942df