[INFO] cloning repository https://github.com/peaceman/aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/peaceman/aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeaceman%2Faoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeaceman%2Faoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4bad951d5199fde73540f1e3aa5bcb223902169e
[INFO] checking peaceman/aoc2020 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeaceman%2Faoc2020" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/peaceman/aoc2020
[INFO] finished tweaking git repo https://github.com/peaceman/aoc2020
[INFO] tweaked toml for git repo https://github.com/peaceman/aoc2020 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/peaceman/aoc2020 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/peaceman/aoc2020 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 124cbb241ab2e2eb0d30195fddb895a1dd52c0a85873b699f44e864d5df6981f
[INFO] running `Command { std: "docker" "start" "-a" "124cbb241ab2e2eb0d30195fddb895a1dd52c0a85873b699f44e864d5df6981f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "124cbb241ab2e2eb0d30195fddb895a1dd52c0a85873b699f44e864d5df6981f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "124cbb241ab2e2eb0d30195fddb895a1dd52c0a85873b699f44e864d5df6981f", kill_on_drop: false }`
[INFO] [stdout] 124cbb241ab2e2eb0d30195fddb895a1dd52c0a85873b699f44e864d5df6981f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24a1a8f6c5d5c7e9e76f5a052a86d21ccf1fd3843874dcd842cfff451e919b7b
[INFO] running `Command { std: "docker" "start" "-a" "24a1a8f6c5d5c7e9e76f5a052a86d21ccf1fd3843874dcd842cfff451e919b7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking os_str_bytes v2.4.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking scan_fmt v0.2.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/bin/day7b.rs:2:33
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> src/bin/day7b.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     input: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Filter`
[INFO] [stdout]  --> src/bin/day17b.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::iter::Filter;
[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: `FieldRules`
[INFO] [stdout]    --> src/bin/day16b.rs:193:81
[INFO] [stdout]     |
[INFO] [stdout] 193 |         determine_field_positions, determine_ticket_scanning_error_rate, parse, FieldRules,
[INFO] [stdout]     |                                                                                 ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc2020` (bin "day7b") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `Rules`
[INFO] [stdout]    --> src/bin/day19a.rs:115:37
[INFO] [stdout]     |
[INFO] [stdout] 115 |     use crate::{expand_rule, parse, Rules};
[INFO] [stdout]     |                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> src/bin/day13a.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     input: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc2020` (bin "day13a" test) due to 1 previous error
[INFO] [stdout] warning: unused variable: `my_ticket`
[INFO] [stdout]    --> src/bin/day16b.rs:213:27
[INFO] [stdout]     |
[INFO] [stdout] 213 |         let (field_rules, my_ticket, nearby_tickets) = parse(data.as_bytes());
[INFO] [stdout]     |                           ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_ticket`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_ticket`
[INFO] [stdout]    --> src/bin/day16b.rs:235:27
[INFO] [stdout]     |
[INFO] [stdout] 235 |         let (field_rules, my_ticket, nearby_tickets) = parse(data.as_bytes());
[INFO] [stdout]     |                           ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_ticket`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> src/bin/day5b.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     input: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/day16b.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     input: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/day16b.rs:72:70
[INFO] [stdout]    |
[INFO] [stdout] 72 |                       if let Ok((class, from_a, to_a, from_b, to_b)) = scan_fmt!(
[INFO] [stdout]    |  ______________________________________________________________________^
[INFO] [stdout] 73 | |                         &line,
[INFO] [stdout] 74 | |                         "{[^:]}: {d}-{d} or {d}-{d}",
[INFO] [stdout] 75 | |                         String,
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |                         u32
[INFO] [stdout] 80 | |                     ) {
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/day16b.rs:72:70
[INFO] [stdout]    |
[INFO] [stdout] 72 |                       if let Ok((class, from_a, to_a, from_b, to_b)) = scan_fmt!(
[INFO] [stdout]    |  ______________________________________________________________________^
[INFO] [stdout] 73 | |                         &line,
[INFO] [stdout] 74 | |                         "{[^:]}: {d}-{d} or {d}-{d}",
[INFO] [stdout] 75 | |                         String,
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |                         u32
[INFO] [stdout] 80 | |                     ) {
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/day16b.rs:72:70
[INFO] [stdout]    |
[INFO] [stdout] 72 |                       if let Ok((class, from_a, to_a, from_b, to_b)) = scan_fmt!(
[INFO] [stdout]    |  ______________________________________________________________________^
[INFO] [stdout] 73 | |                         &line,
[INFO] [stdout] 74 | |                         "{[^:]}: {d}-{d} or {d}-{d}",
[INFO] [stdout] 75 | |                         String,
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |                         u32
[INFO] [stdout] 80 | |                     ) {
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/day16b.rs:72:70
[INFO] [stdout]    |
[INFO] [stdout] 72 |                       if let Ok((class, from_a, to_a, from_b, to_b)) = scan_fmt!(
[INFO] [stdout]    |  ______________________________________________________________________^
[INFO] [stdout] 73 | |                         &line,
[INFO] [stdout] 74 | |                         "{[^:]}: {d}-{d} or {d}-{d}",
[INFO] [stdout] 75 | |                         String,
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |                         u32
[INFO] [stdout] 80 | |                     ) {
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc2020` (bin "day5b") due to 1 previous error
[INFO] [stdout] warning: unused variable: `messages`
[INFO] [stdout]    --> src/bin/day19a.rs:164:21
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let (rules, messages) = parse(input.trim().as_bytes());
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_messages`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/day17a.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     input: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/day19a.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     input: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc2020` (bin "day16b" test) due to 5 previous errors; 3 warnings emitted
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/bin/day3b.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     input: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc2020` (bin "day17a" test) due to 1 previous error
[INFO] [stderr] error: could not compile `aoc2020` (bin "day19a" test) due to 1 previous error; 2 warnings emitted
[INFO] [stdout] warning: unused variable: `cycle`
[INFO] [stdout]    --> src/bin/day17b.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |     for cycle in 0..cycles {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_cycle`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc2020` (bin "day3b" test) due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/day17b.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     input: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc2020` (bin "day17b" test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "24a1a8f6c5d5c7e9e76f5a052a86d21ccf1fd3843874dcd842cfff451e919b7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24a1a8f6c5d5c7e9e76f5a052a86d21ccf1fd3843874dcd842cfff451e919b7b", kill_on_drop: false }`
[INFO] [stdout] 24a1a8f6c5d5c7e9e76f5a052a86d21ccf1fd3843874dcd842cfff451e919b7b
