[INFO] cloning repository https://github.com/yuyuyuyurisuki/os_work
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuyuyuyurisuki/os_work" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuyuyuyurisuki%2Fos_work", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuyuyuyurisuki%2Fos_work'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa824c66bd7d181832c344b40512c82236613881
[INFO] checking yuyuyuyurisuki/os_work against try#50f413885985a8b0a0b6ca0766a0aedd45304953 for pr-155657
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuyuyuyurisuki%2Fos_work" "/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/yuyuyuyurisuki/os_work
[INFO] finished tweaking git repo https://github.com/yuyuyuyurisuki/os_work
[INFO] tweaked toml for git repo https://github.com/yuyuyuyurisuki/os_work written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yuyuyuyurisuki/os_work on toolchain 50f413885985a8b0a0b6ca0766a0aedd45304953
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yuyuyuyurisuki/os_work 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" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc8df32cdf86918ace0d67a85f6083e96b15b0c64ecdcb7c45fbc6874a2cba22
[INFO] running `Command { std: "docker" "start" "-a" "dc8df32cdf86918ace0d67a85f6083e96b15b0c64ecdcb7c45fbc6874a2cba22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc8df32cdf86918ace0d67a85f6083e96b15b0c64ecdcb7c45fbc6874a2cba22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc8df32cdf86918ace0d67a85f6083e96b15b0c64ecdcb7c45fbc6874a2cba22", kill_on_drop: false }`
[INFO] [stdout] dc8df32cdf86918ace0d67a85f6083e96b15b0c64ecdcb7c45fbc6874a2cba22
[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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a843812ba627b6f48822798a5e0a03d5132a61fc1092a371f39eb3fd158fc98a
[INFO] running `Command { std: "docker" "start" "-a" "a843812ba627b6f48822798a5e0a03d5132a61fc1092a371f39eb3fd158fc98a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling anyhow v1.0.58
[INFO] [stderr]     Checking byte v0.2.6
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]     Checking scanf v1.2.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking os_work v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sleep`
[INFO] [stdout]  --> src/bank.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thread::{sleep, spawn};
[INFO] [stdout]   |                   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/bank.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/byte.rs:57:18
[INFO] [stdout]    |
[INFO] [stdout] 57 | num_impl!(usize, (mem::size_of::<usize>()));
[INFO] [stdout]    |                  ^                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 57 - num_impl!(usize, (mem::size_of::<usize>()));
[INFO] [stdout] 57 + num_impl!(usize, mem::size_of::<usize>() );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/byte.rs:34:32
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 check_len(buf, $size)?;
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/byte.rs:36:20
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 Ok($size)
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/byte.rs:41:32
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 check_len(buf, $size)?;
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/byte.rs:58:18
[INFO] [stdout]    |
[INFO] [stdout] 58 | num_impl!(isize, (mem::size_of::<isize>()));
[INFO] [stdout]    |                  ^                       ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 58 - num_impl!(isize, (mem::size_of::<isize>()));
[INFO] [stdout] 58 + num_impl!(isize, mem::size_of::<isize>() );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `btree::BTree`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use btree::BTree;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::stdin`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::stdin;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::io::BufReader;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::rc::Rc;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::spawn`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::thread::spawn;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::time::Instant;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sleep`
[INFO] [stdout]  --> src/bank.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thread::{sleep, spawn};
[INFO] [stdout]   |                   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/bank.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/byte.rs:57:18
[INFO] [stdout]    |
[INFO] [stdout] 57 | num_impl!(usize, (mem::size_of::<usize>()));
[INFO] [stdout]    |                  ^                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 57 - num_impl!(usize, (mem::size_of::<usize>()));
[INFO] [stdout] 57 + num_impl!(usize, mem::size_of::<usize>() );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/byte.rs:34:32
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 check_len(buf, $size)?;
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/byte.rs:36:20
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 Ok($size)
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/byte.rs:41:32
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 check_len(buf, $size)?;
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/byte.rs:58:18
[INFO] [stdout]    |
[INFO] [stdout] 58 | num_impl!(isize, (mem::size_of::<isize>()));
[INFO] [stdout]    |                  ^                       ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 58 - num_impl!(isize, (mem::size_of::<isize>()));
[INFO] [stdout] 58 + num_impl!(isize, mem::size_of::<isize>() );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::stdin`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::stdin;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::rc::Rc;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::spawn`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::thread::spawn;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]    --> src/main.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 scanf!("{}{}", id, amount).unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 unreachable call
[INFO] [stdout]     |                 any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]     = note: this warning originates in the macro `$crate::sscanf` which comes from the expansion of the macro `scanf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]    --> src/main.rs:123:17
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 scanf!("{}{}", id, amount).unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 unreachable call
[INFO] [stdout]     |                 any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `$crate::sscanf` which comes from the expansion of the macro `scanf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]    --> src/main.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 scanf!("{}{}{}", payment_id, collection_id, amount).unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 unreachable call
[INFO] [stdout]     |                 any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `$crate::sscanf` which comes from the expansion of the macro `scanf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]    --> src/main.rs:147:21
[INFO] [stdout]     |
[INFO] [stdout] 147 |                     scanf!("{}{}", id, amount).unwrap();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     unreachable call
[INFO] [stdout]     |                     any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `$crate::sscanf` which comes from the expansion of the macro `scanf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]    --> src/main.rs:161:21
[INFO] [stdout]     |
[INFO] [stdout] 161 |                     scanf!("{}", id).unwrap();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     unreachable call
[INFO] [stdout]     |                     any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `$crate::sscanf` which comes from the expansion of the macro `scanf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]    --> src/main.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 scanf!("{}{}", id, amount).unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 unreachable call
[INFO] [stdout]     |                 any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]     = note: this warning originates in the macro `$crate::sscanf` which comes from the expansion of the macro `scanf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]    --> src/main.rs:123:17
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 scanf!("{}{}", id, amount).unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 unreachable call
[INFO] [stdout]     |                 any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `$crate::sscanf` which comes from the expansion of the macro `scanf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]    --> src/main.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 scanf!("{}{}{}", payment_id, collection_id, amount).unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 unreachable call
[INFO] [stdout]     |                 any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `$crate::sscanf` which comes from the expansion of the macro `scanf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(): Into<Box<(dyn std::error::Error + Send + Sync + 'static)>>` is not satisfied
[INFO] [stdout]    --> src/main.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 scanf!("{}{}", id, amount).unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the trait `std::error::Error` is not implemented for `()`
[INFO] [stdout]     |                 required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `Box<(dyn std::error::Error + Send + Sync + 'static)>` to implement `From<()>`
[INFO] [stdout]     = note: required for `()` to implement `Into<Box<(dyn std::error::Error + Send + Sync + 'static)>>`
[INFO] [stdout] note: required by a bound in `std::io::Error::new`
[INFO] [stdout]    --> /rustc/50f413885985a8b0a0b6ca0766a0aedd45304953/library/std/src/io/error.rs:264:4
[INFO] [stdout]     = note: this error originates in the macro `$crate::sscanf` which comes from the expansion of the macro `scanf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]    --> src/main.rs:147:21
[INFO] [stdout]     |
[INFO] [stdout] 147 |                     scanf!("{}{}", id, amount).unwrap();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     unreachable call
[INFO] [stdout]     |                     any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `$crate::sscanf` which comes from the expansion of the macro `scanf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]    --> src/main.rs:161:21
[INFO] [stdout]     |
[INFO] [stdout] 161 |                     scanf!("{}", id).unwrap();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     unreachable call
[INFO] [stdout]     |                     any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `$crate::sscanf` which comes from the expansion of the macro `scanf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(): Into<Box<(dyn std::error::Error + Send + Sync + 'static)>>` is not satisfied
[INFO] [stdout]    --> src/main.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 scanf!("{}{}", id, amount).unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the trait `std::error::Error` is not implemented for `()`
[INFO] [stdout]     |                 required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `Box<(dyn std::error::Error + Send + Sync + 'static)>` to implement `From<()>`
[INFO] [stdout]     = note: required for `()` to implement `Into<Box<(dyn std::error::Error + Send + Sync + 'static)>>`
[INFO] [stdout] note: required by a bound in `std::io::Error::new`
[INFO] [stdout]    --> /rustc/50f413885985a8b0a0b6ca0766a0aedd45304953/library/std/src/io/error.rs:264:4
[INFO] [stdout]     = note: this error originates in the macro `$crate::sscanf` which comes from the expansion of the macro `scanf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `os_work` (bin "os_work") due to 1 previous error; 20 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut map = BTree::<i32, f32>::new("./index.btree");
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map`
[INFO] [stdout]   --> src/main.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut map = BTree::<i32, f32>::new("./index.btree");
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `os_work` (bin "os_work" test) due to 1 previous error; 17 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a843812ba627b6f48822798a5e0a03d5132a61fc1092a371f39eb3fd158fc98a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a843812ba627b6f48822798a5e0a03d5132a61fc1092a371f39eb3fd158fc98a", kill_on_drop: false }`
[INFO] [stdout] a843812ba627b6f48822798a5e0a03d5132a61fc1092a371f39eb3fd158fc98a
