[INFO] cloning repository https://github.com/ferrite-rs/ferrite-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ferrite-rs/ferrite-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fferrite-rs%2Fferrite-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fferrite-rs%2Fferrite-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a84f78984c4130a657ff7cbcae51e86e32764446
[INFO] testing ferrite-rs/ferrite-tutorial against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fferrite-rs%2Fferrite-tutorial" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ferrite-rs/ferrite-tutorial on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ferrite-rs/ferrite-tutorial
[INFO] finished tweaking git repo https://github.com/ferrite-rs/ferrite-tutorial
[INFO] tweaked toml for git repo https://github.com/ferrite-rs/ferrite-tutorial written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ferrite-rs/ferrite-tutorial already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6d067eece285f462f95f3e204fdaafca7ea5abc53dd7ed7f3693bd1bb640ee7
[INFO] running `Command { std: "docker" "start" "-a" "a6d067eece285f462f95f3e204fdaafca7ea5abc53dd7ed7f3693bd1bb640ee7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6d067eece285f462f95f3e204fdaafca7ea5abc53dd7ed7f3693bd1bb640ee7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6d067eece285f462f95f3e204fdaafca7ea5abc53dd7ed7f3693bd1bb640ee7", kill_on_drop: false }`
[INFO] [stdout] a6d067eece285f462f95f3e204fdaafca7ea5abc53dd7ed7f3693bd1bb640ee7
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf4cea9ed71d08f9b76ae43bc472aef24d91f40c992ab9f1ee2c60bc1f0023e5
[INFO] running `Command { std: "docker" "start" "-a" "cf4cea9ed71d08f9b76ae43bc472aef24d91f40c992ab9f1ee2c60bc1f0023e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling tokio v1.7.0
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling ipc-channel v0.15.0
[INFO] [stderr]    Compiling ferrite-session v0.2.0
[INFO] [stderr]    Compiling ferrite-tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/bin/10_dining_philosophers.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::time::sleep`
[INFO] [stdout]   --> src/bin/10_dining_philosophers.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 | use tokio::time::sleep;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nickel2`
[INFO] [stdout]   --> src/bin/03_coin_exchange.rs:89:47
[INFO] [stdout]    |
[INFO] [stdout] 89 |         include_session(forge_nickel(), move |nickel2| {
[INFO] [stdout]    |                                               ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nickel2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current`
[INFO] [stdout]   --> src/bin/06_rec_calculator.rs:61:24
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn calculator_provider(current: f64) -> Session<Calculator> {
[INFO] [stdout]    |                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nickel1`
[INFO] [stdout]   --> src/bin/03_coin_exchange.rs:88:45
[INFO] [stdout]    |
[INFO] [stdout] 88 |       include_session(forge_nickel(), move |nickel1| {
[INFO] [stdout]    |                                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nickel1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vending_machine`
[INFO] [stdout]   --> src/bin/03_coin_exchange.rs:87:46
[INFO] [stdout]    |
[INFO] [stdout] 87 |     include_session(vending_machine(), move |vending_machine| {
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_vending_machine`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/06_rec_calculator.rs:66:3
[INFO] [stdout]    |
[INFO] [stdout] 66 |   x: f64,
[INFO] [stdout]    |   ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/bin/06_rec_calculator.rs:67:3
[INFO] [stdout]    |
[INFO] [stdout] 67 |   y: f64,
[INFO] [stdout]    |   ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `coin_exchange`
[INFO] [stdout]   --> src/bin/03_coin_exchange.rs:86:42
[INFO] [stdout]    |
[INFO] [stdout] 86 |   include_session(coin_exchange(), move |coin_exchange| {
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_coin_exchange`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/bin/06_rec_calculator.rs:68:3
[INFO] [stdout]    |
[INFO] [stdout] 68 |   z: f64,
[INFO] [stdout]    |   ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/bin/08_queue.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn elem(val: String) -> Session<ReceiveChannel<Queue, Queue>>
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/bin/10_dining_philosophers.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn fork(id: u8) -> SharedSession<Fork> {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/bin/10_dining_philosophers.rs:78:3
[INFO] [stdout]    |
[INFO] [stdout] 78 |   id: u8,
[INFO] [stdout]    |   ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/bin/10_dining_philosophers.rs:79:3
[INFO] [stdout]    |
[INFO] [stdout] 79 |   left: SharedChannel<Fork>,
[INFO] [stdout]    |   ^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/bin/10_dining_philosophers.rs:80:3
[INFO] [stdout]    |
[INFO] [stdout] 80 |   right: SharedChannel<Fork>,
[INFO] [stdout]    |   ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `actual_pin`
[INFO] [stdout]    --> src/bin/07_rec_atm.rs:150:3
[INFO] [stdout]     |
[INFO] [stdout] 150 |   actual_pin: Pin,
[INFO] [stdout]     |   ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_actual_pin`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attempts`
[INFO] [stdout]    --> src/bin/07_rec_atm.rs:151:3
[INFO] [stdout]     |
[INFO] [stdout] 151 |   attempts: u8,
[INFO] [stdout]     |   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attempts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `balance`
[INFO] [stdout]    --> src/bin/07_rec_atm.rs:152:3
[INFO] [stdout]     |
[INFO] [stdout] 152 |   balance: u64,
[INFO] [stdout]     |   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_balance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pin`
[INFO] [stdout]    --> src/bin/07_rec_atm.rs:158:3
[INFO] [stdout]     |
[INFO] [stdout] 158 |   pin: Pin,
[INFO] [stdout]     |   ^^^ help: if this is intentional, prefix it with an underscore: `_pin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `withdraw_amount`
[INFO] [stdout]    --> src/bin/07_rec_atm.rs:159:3
[INFO] [stdout]     |
[INFO] [stdout] 159 |   withdraw_amount: CashAmount,
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_withdraw_amount`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/bin/04_simple_calculator.rs:37:50
[INFO] [stdout]    |
[INFO] [stdout] 37 |     include_session(calculator_provider(), move |c2| {
[INFO] [stdout]    |                                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/bin/04_simple_calculator.rs:36:48
[INFO] [stdout]    |
[INFO] [stdout] 36 |   include_session(calculator_provider(), move |c1| {
[INFO] [stdout]    |                                                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `elem`
[INFO] [stdout]   --> src/bin/08_queue.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn elem(val: String) -> Session<ReceiveChannel<Queue, Queue>>
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_RETRY`
[INFO] [stdout]    --> src/bin/07_rec_atm.rs:109:1
[INFO] [stdout]     |
[INFO] [stdout] 109 | const MAX_RETRY: u8 = 3;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `amount`
[INFO] [stdout]    --> src/bin/07_rec_atm.rs:126:3
[INFO] [stdout]     |
[INFO] [stdout] 126 |   amount: CashAmount,
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `forge_cash`
[INFO] [stdout]    --> src/bin/07_rec_atm.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn forge_cash(amount: u64) -> Session<Cash> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `spend_cash`
[INFO] [stdout]    --> src/bin/07_rec_atm.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn spend_cash() -> Session<ReceiveChannel<Cash, End>> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `actual_pin`
[INFO] [stdout]    --> src/bin/05_simple_atm.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn atm_provider(actual_pin: Pin, balance: u64) -> Session<Atm> {
[INFO] [stdout]     |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_actual_pin`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `balance`
[INFO] [stdout]    --> src/bin/05_simple_atm.rs:109:34
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn atm_provider(actual_pin: Pin, balance: u64) -> Session<Atm> {
[INFO] [stdout]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_balance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pin`
[INFO] [stdout]    --> src/bin/05_simple_atm.rs:114:3
[INFO] [stdout]     |
[INFO] [stdout] 114 |   pin: Pin,
[INFO] [stdout]     |   ^^^ help: if this is intentional, prefix it with an underscore: `_pin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `withdraw_amount`
[INFO] [stdout]    --> src/bin/05_simple_atm.rs:115:3
[INFO] [stdout]     |
[INFO] [stdout] 115 |   withdraw_amount: CashAmount,
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_withdraw_amount`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Adder`
[INFO] [stdout]   --> src/bin/02_adder.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / type Adder =
[INFO] [stdout] 22 | |   ReceiveValue<i32, ReceiveValue<i32, SendValue<i32, End>>>;
[INFO] [stdout]    | |____________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `adder_provider`
[INFO] [stdout]   --> src/bin/02_adder.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn adder_provider() -> Session<Adder> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `adder_client`
[INFO] [stdout]   --> src/bin/02_adder.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn adder_client() -> Session<ReceiveChannel<Adder, End>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `amount`
[INFO] [stdout]   --> src/bin/05_simple_atm.rs:86:3
[INFO] [stdout]    |
[INFO] [stdout] 86 |   amount: CashAmount,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `forge_cash`
[INFO] [stdout]   --> src/bin/05_simple_atm.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn forge_cash(amount: u64) -> Session<Cash> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `spend_cash`
[INFO] [stdout]    --> src/bin/05_simple_atm.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn spend_cash() -> Session<ReceiveChannel<Cash, End>> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val1`
[INFO] [stdout]   --> src/bin/09_shared_queue.rs:73:3
[INFO] [stdout]    |
[INFO] [stdout] 73 |   val1: String,
[INFO] [stdout]    |   ^^^^ help: if this is intentional, prefix it with an underscore: `_val1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tail`
[INFO] [stdout]   --> src/bin/09_shared_queue.rs:74:3
[INFO] [stdout]    |
[INFO] [stdout] 74 |   tail: SharedChannel<Queue>,
[INFO] [stdout]    |   ^^^^ help: if this is intentional, prefix it with an underscore: `_tail`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `queue`
[INFO] [stdout]   --> src/bin/09_shared_queue.rs:81:3
[INFO] [stdout]    |
[INFO] [stdout] 81 |   queue: SharedChannel<Queue>,
[INFO] [stdout]    |   ^^^^^ help: if this is intentional, prefix it with an underscore: `_queue`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/bin/09_shared_queue.rs:82:3
[INFO] [stdout]    |
[INFO] [stdout] 82 |   val: String
[INFO] [stdout]    |   ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `queue`
[INFO] [stdout]   --> src/bin/09_shared_queue.rs:89:3
[INFO] [stdout]    |
[INFO] [stdout] 89 |   queue: SharedChannel<Queue>,
[INFO] [stdout]    |   ^^^^^ help: if this is intentional, prefix it with an underscore: `_queue`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `head_queue`
[INFO] [stdout]   --> src/bin/09_shared_queue.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn head_queue(
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ferrite-tutorial`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name 03_coin_exchange --edition=2018 src/bin/03_coin_exchange.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=69d6e0ba6c04251c -C extra-filename=-69d6e0ba6c04251c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-9bd412fb836d1e99.rlib --extern ferrite_session=/opt/rustwide/target/debug/deps/libferrite_session-7990ade09ee2c3f4.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-6042ccf90f853e96.rlib --extern tokio=/opt/rustwide/target/debug/deps/libtokio-6960a982147a6a50.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.07_rec_atm.4u2xu58k-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b.23tqaezuetmv2mgb.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libenv_logger-9bd412fb836d1e99.rlib" "/opt/rustwide/target/debug/deps/libatty-7e959dad01ff0b84.rlib" "/opt/rustwide/target/debug/deps/libtermcolor-01d11b91b4e31953.rlib" "/opt/rustwide/target/debug/deps/libhumantime-a009164c47ff2cdf.rlib" "/opt/rustwide/target/debug/deps/libregex-4a9813f074fc2adb.rlib" "/opt/rustwide/target/debug/deps/libaho_corasick-daea6be397b1cb2b.rlib" "/opt/rustwide/target/debug/deps/libregex_syntax-8166447919dfd645.rlib" "/opt/rustwide/target/debug/deps/libferrite_session-7990ade09ee2c3f4.rlib" "/opt/rustwide/target/debug/deps/libtokio-6960a982147a6a50.rlib" "/opt/rustwide/target/debug/deps/libsignal_hook_registry-ff3e3c43dc228336.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-6829fb417a9bc37f.rlib" "/opt/rustwide/target/debug/deps/libmemchr-1f0d97dc9aa3dd56.rlib" "/opt/rustwide/target/debug/deps/libonce_cell-a76c90beb999d50a.rlib" "/opt/rustwide/target/debug/deps/libbytes-df7cac8fc38da202.rlib" "/opt/rustwide/target/debug/deps/libmio-898486922596fff1.rlib" "/opt/rustwide/target/debug/deps/libpin_project_lite-9385a627c3f2ae8b.rlib" "/opt/rustwide/target/debug/deps/libparking_lot-76cf134009984f60.rlib" "/opt/rustwide/target/debug/deps/libparking_lot_core-4d7c3bf40e9bbbde.rlib" "/opt/rustwide/target/debug/deps/libsmallvec-cd9632e27e802452.rlib" "/opt/rustwide/target/debug/deps/liblock_api-f86aff73bc72d24a.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-7a1710762e6687e9.rlib" "/opt/rustwide/target/debug/deps/libinstant-b15b767f83caad3c.rlib" "/opt/rustwide/target/debug/deps/libipc_channel-5f8cd8aa34f19365.rlib" "/opt/rustwide/target/debug/deps/libtempfile-16a45dbcbbd767a5.rlib" "/opt/rustwide/target/debug/deps/librand-6042ccf90f853e96.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-ca922e1afd4f32c8.rlib" "/opt/rustwide/target/debug/deps/librand_core-013c9d48d6538612.rlib" "/opt/rustwide/target/debug/deps/libgetrandom-d87cd848ceac8c06.rlib" "/opt/rustwide/target/debug/deps/libremove_dir_all-80ef6726c25ad48c.rlib" "/opt/rustwide/target/debug/deps/librand-3a8e94eff18f564e.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-be8b7c31bb359e9f.rlib" "/opt/rustwide/target/debug/deps/libppv_lite86-545d86392ea1d8e4.rlib" "/opt/rustwide/target/debug/deps/librand_core-7b383ac48380a232.rlib" "/opt/rustwide/target/debug/deps/libgetrandom-ce11e7e3d90af4b9.rlib" "/opt/rustwide/target/debug/deps/libmio-f92b281eb40c0d2e.rlib" "/opt/rustwide/target/debug/deps/libslab-26d05b350ac0da07.rlib" "/opt/rustwide/target/debug/deps/libiovec-c90c13acf0d974a1.rlib" "/opt/rustwide/target/debug/deps/libnet2-cb0c6fab80bfb8a8.rlib" "/opt/rustwide/target/debug/deps/liblibc-92678f6af2d08454.rlib" "/opt/rustwide/target/debug/deps/libfnv-56e05e18a5751d51.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_channel-316e2b8f1f795595.rlib" "/opt/rustwide/target/debug/deps/libmaybe_uninit-17ac005437abed86.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-b76e7ff1d6357fef.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-5c53d641eb010a81.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-e7a28af79b261e75.rlib" "/opt/rustwide/target/debug/deps/libbincode-95f3cfe73cef2942.rlib" "/opt/rustwide/target/debug/deps/libserde-be40f0cae91ce4f7.rlib" "/opt/rustwide/target/debug/deps/liblog-c7a6438e9780af3a.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-38c8a3e888ecb06a.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-2420485b9e5ef5e1.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-785e3cb61c4b1960.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-087191a88bdaa22d.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9981842c02975178.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-6fb405869b015fde.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-d05c5c3c56004b7b.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-42d74d2097528b38.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-fb36534c113d2209.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-b56b9042c12b6535.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-491902d6cb3e76df.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-61834e0981b8c367.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-f78aa99d613a55bc.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-53ee54cd7fed2c57.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-544ecdbd6cda3c58.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-379cc252b6943a79.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-8063eea38dcc5e62.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-5b228734afae15ee.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-d6c7a399d95d173f.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/07_rec_atm-7e2b0a2f93ffe97b" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: collect2: fatal error: ld terminated with signal 9 [Killed]
[INFO] [stdout]           compilation terminated.
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.05_simple_atm.2az96yg6-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927.ol83n53y18xi9ik.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libenv_logger-9bd412fb836d1e99.rlib" "/opt/rustwide/target/debug/deps/libatty-7e959dad01ff0b84.rlib" "/opt/rustwide/target/debug/deps/libtermcolor-01d11b91b4e31953.rlib" "/opt/rustwide/target/debug/deps/libhumantime-a009164c47ff2cdf.rlib" "/opt/rustwide/target/debug/deps/libregex-4a9813f074fc2adb.rlib" "/opt/rustwide/target/debug/deps/libaho_corasick-daea6be397b1cb2b.rlib" "/opt/rustwide/target/debug/deps/libregex_syntax-8166447919dfd645.rlib" "/opt/rustwide/target/debug/deps/libferrite_session-7990ade09ee2c3f4.rlib" "/opt/rustwide/target/debug/deps/libtokio-6960a982147a6a50.rlib" "/opt/rustwide/target/debug/deps/libsignal_hook_registry-ff3e3c43dc228336.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-6829fb417a9bc37f.rlib" "/opt/rustwide/target/debug/deps/libmemchr-1f0d97dc9aa3dd56.rlib" "/opt/rustwide/target/debug/deps/libonce_cell-a76c90beb999d50a.rlib" "/opt/rustwide/target/debug/deps/libbytes-df7cac8fc38da202.rlib" "/opt/rustwide/target/debug/deps/libmio-898486922596fff1.rlib" "/opt/rustwide/target/debug/deps/libpin_project_lite-9385a627c3f2ae8b.rlib" "/opt/rustwide/target/debug/deps/libparking_lot-76cf134009984f60.rlib" "/opt/rustwide/target/debug/deps/libparking_lot_core-4d7c3bf40e9bbbde.rlib" "/opt/rustwide/target/debug/deps/libsmallvec-cd9632e27e802452.rlib" "/opt/rustwide/target/debug/deps/liblock_api-f86aff73bc72d24a.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-7a1710762e6687e9.rlib" "/opt/rustwide/target/debug/deps/libinstant-b15b767f83caad3c.rlib" "/opt/rustwide/target/debug/deps/libipc_channel-5f8cd8aa34f19365.rlib" "/opt/rustwide/target/debug/deps/libtempfile-16a45dbcbbd767a5.rlib" "/opt/rustwide/target/debug/deps/librand-6042ccf90f853e96.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-ca922e1afd4f32c8.rlib" "/opt/rustwide/target/debug/deps/librand_core-013c9d48d6538612.rlib" "/opt/rustwide/target/debug/deps/libgetrandom-d87cd848ceac8c06.rlib" "/opt/rustwide/target/debug/deps/libremove_dir_all-80ef6726c25ad48c.rlib" "/opt/rustwide/target/debug/deps/librand-3a8e94eff18f564e.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-be8b7c31bb359e9f.rlib" "/opt/rustwide/target/debug/deps/libppv_lite86-545d86392ea1d8e4.rlib" "/opt/rustwide/target/debug/deps/librand_core-7b383ac48380a232.rlib" "/opt/rustwide/target/debug/deps/libgetrandom-ce11e7e3d90af4b9.rlib" "/opt/rustwide/target/debug/deps/libmio-f92b281eb40c0d2e.rlib" "/opt/rustwide/target/debug/deps/libslab-26d05b350ac0da07.rlib" "/opt/rustwide/target/debug/deps/libiovec-c90c13acf0d974a1.rlib" "/opt/rustwide/target/debug/deps/libnet2-cb0c6fab80bfb8a8.rlib" "/opt/rustwide/target/debug/deps/liblibc-92678f6af2d08454.rlib" "/opt/rustwide/target/debug/deps/libfnv-56e05e18a5751d51.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_channel-316e2b8f1f795595.rlib" "/opt/rustwide/target/debug/deps/libmaybe_uninit-17ac005437abed86.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-b76e7ff1d6357fef.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-5c53d641eb010a81.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-e7a28af79b261e75.rlib" "/opt/rustwide/target/debug/deps/libbincode-95f3cfe73cef2942.rlib" "/opt/rustwide/target/debug/deps/libserde-be40f0cae91ce4f7.rlib" "/opt/rustwide/target/debug/deps/liblog-c7a6438e9780af3a.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-38c8a3e888ecb06a.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-2420485b9e5ef5e1.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-785e3cb61c4b1960.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-087191a88bdaa22d.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9981842c02975178.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-6fb405869b015fde.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-d05c5c3c56004b7b.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-42d74d2097528b38.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-fb36534c113d2209.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-b56b9042c12b6535.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-491902d6cb3e76df.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-61834e0981b8c367.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-f78aa99d613a55bc.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-53ee54cd7fed2c57.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-544ecdbd6cda3c58.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-379cc252b6943a79.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-8063eea38dcc5e62.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-5b228734afae15ee.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-d6c7a399d95d173f.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/05_simple_atm-11af343f8780a927" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: collect2: fatal error: ld terminated with signal 9 [Killed]
[INFO] [stdout]           compilation terminated.
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.06_rec_calculator.5m5wughw-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9.1iip1u0n88j4kh5j.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libenv_logger-9bd412fb836d1e99.rlib" "/opt/rustwide/target/debug/deps/libatty-7e959dad01ff0b84.rlib" "/opt/rustwide/target/debug/deps/libtermcolor-01d11b91b4e31953.rlib" "/opt/rustwide/target/debug/deps/libhumantime-a009164c47ff2cdf.rlib" "/opt/rustwide/target/debug/deps/libregex-4a9813f074fc2adb.rlib" "/opt/rustwide/target/debug/deps/libaho_corasick-daea6be397b1cb2b.rlib" "/opt/rustwide/target/debug/deps/libregex_syntax-8166447919dfd645.rlib" "/opt/rustwide/target/debug/deps/libferrite_session-7990ade09ee2c3f4.rlib" "/opt/rustwide/target/debug/deps/libtokio-6960a982147a6a50.rlib" "/opt/rustwide/target/debug/deps/libsignal_hook_registry-ff3e3c43dc228336.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-6829fb417a9bc37f.rlib" "/opt/rustwide/target/debug/deps/libmemchr-1f0d97dc9aa3dd56.rlib" "/opt/rustwide/target/debug/deps/libonce_cell-a76c90beb999d50a.rlib" "/opt/rustwide/target/debug/deps/libbytes-df7cac8fc38da202.rlib" "/opt/rustwide/target/debug/deps/libmio-898486922596fff1.rlib" "/opt/rustwide/target/debug/deps/libpin_project_lite-9385a627c3f2ae8b.rlib" "/opt/rustwide/target/debug/deps/libparking_lot-76cf134009984f60.rlib" "/opt/rustwide/target/debug/deps/libparking_lot_core-4d7c3bf40e9bbbde.rlib" "/opt/rustwide/target/debug/deps/libsmallvec-cd9632e27e802452.rlib" "/opt/rustwide/target/debug/deps/liblock_api-f86aff73bc72d24a.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-7a1710762e6687e9.rlib" "/opt/rustwide/target/debug/deps/libinstant-b15b767f83caad3c.rlib" "/opt/rustwide/target/debug/deps/libipc_channel-5f8cd8aa34f19365.rlib" "/opt/rustwide/target/debug/deps/libtempfile-16a45dbcbbd767a5.rlib" "/opt/rustwide/target/debug/deps/librand-6042ccf90f853e96.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-ca922e1afd4f32c8.rlib" "/opt/rustwide/target/debug/deps/librand_core-013c9d48d6538612.rlib" "/opt/rustwide/target/debug/deps/libgetrandom-d87cd848ceac8c06.rlib" "/opt/rustwide/target/debug/deps/libremove_dir_all-80ef6726c25ad48c.rlib" "/opt/rustwide/target/debug/deps/librand-3a8e94eff18f564e.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-be8b7c31bb359e9f.rlib" "/opt/rustwide/target/debug/deps/libppv_lite86-545d86392ea1d8e4.rlib" "/opt/rustwide/target/debug/deps/librand_core-7b383ac48380a232.rlib" "/opt/rustwide/target/debug/deps/libgetrandom-ce11e7e3d90af4b9.rlib" "/opt/rustwide/target/debug/deps/libmio-f92b281eb40c0d2e.rlib" "/opt/rustwide/target/debug/deps/libslab-26d05b350ac0da07.rlib" "/opt/rustwide/target/debug/deps/libiovec-c90c13acf0d974a1.rlib" "/opt/rustwide/target/debug/deps/libnet2-cb0c6fab80bfb8a8.rlib" "/opt/rustwide/target/debug/deps/liblibc-92678f6af2d08454.rlib" "/opt/rustwide/target/debug/deps/libfnv-56e05e18a5751d51.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_channel-316e2b8f1f795595.rlib" "/opt/rustwide/target/debug/deps/libmaybe_uninit-17ac005437abed86.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-b76e7ff1d6357fef.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-5c53d641eb010a81.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-e7a28af79b261e75.rlib" "/opt/rustwide/target/debug/deps/libbincode-95f3cfe73cef2942.rlib" "/opt/rustwide/target/debug/deps/libserde-be40f0cae91ce4f7.rlib" "/opt/rustwide/target/debug/deps/liblog-c7a6438e9780af3a.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-38c8a3e888ecb06a.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-2420485b9e5ef5e1.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-785e3cb61c4b1960.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-087191a88bdaa22d.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9981842c02975178.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-6fb405869b015fde.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-d05c5c3c56004b7b.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-42d74d2097528b38.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-fb36534c113d2209.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-b56b9042c12b6535.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-491902d6cb3e76df.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-61834e0981b8c367.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-f78aa99d613a55bc.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-53ee54cd7fed2c57.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-544ecdbd6cda3c58.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-379cc252b6943a79.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-8063eea38dcc5e62.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-5b228734afae15ee.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-d6c7a399d95d173f.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/06_rec_calculator-4b2864e1ccd07ab9" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: collect2: fatal error: ld terminated with signal 9 [Killed]
[INFO] [stdout]           compilation terminated.
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cf4cea9ed71d08f9b76ae43bc472aef24d91f40c992ab9f1ee2c60bc1f0023e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf4cea9ed71d08f9b76ae43bc472aef24d91f40c992ab9f1ee2c60bc1f0023e5", kill_on_drop: false }`
[INFO] [stdout] cf4cea9ed71d08f9b76ae43bc472aef24d91f40c992ab9f1ee2c60bc1f0023e5
