[INFO] updating cached repository https://github.com/Half-Shot/advent-of-code-2019
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e2429466f635a2be700aae3ff091db9cdaede869
[INFO] checking Half-Shot/advent-of-code-2019 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHalf-Shot%2Fadvent-of-code-2019" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Half-Shot/advent-of-code-2019 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Half-Shot/advent-of-code-2019
[INFO] finished tweaking git repo https://github.com/Half-Shot/advent-of-code-2019
[INFO] tweaked toml for git repo https://github.com/Half-Shot/advent-of-code-2019 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Half-Shot/advent-of-code-2019 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "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=forbid" "-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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 45408171ba1f6f15c339b3cb254fc4648fda0f1b52f87352c015b12761d6c28b
[INFO] running `"docker" "start" "-a" "45408171ba1f6f15c339b3cb254fc4648fda0f1b52f87352c015b12761d6c28b"`
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking advent-of-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `conv::prelude::*`
[INFO] [stderr]  --> src/day02/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use conv::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufReader`
[INFO] [stderr]  --> src/day02/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::BufReader;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `conv::prelude::*`
[INFO] [stderr]  --> src/day02/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use conv::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufReader`
[INFO] [stderr]  --> src/day02/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::BufReader;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `acc` is never read
[INFO] [stderr]   --> src/day02/mod.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut acc: u32 = 0;
[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: function is never used: `calculate_fuel_required`
[INFO] [stderr]  --> src/day01/mod.rs:6:4
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn calculate_fuel_required(mass: i64) -> i64 {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/day01/mod.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn main() -> std::io::Result<()> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/day02/mod.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn main() -> std::io::Result<()> {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_tape_from_memory`
[INFO] [stderr]   --> src/day02/mod.rs:54:8
[INFO] [stderr]    |
[INFO] [stderr] 54 | pub fn read_tape_from_memory() -> std::io::Result<[u32; 255]> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `len` should have an upper case name
[INFO] [stderr]  --> src/day04/mod.rs:1:7
[INFO] [stderr]   |
[INFO] [stderr] 1 | const len: u32 = 8;
[INFO] [stderr]   |       ^^^ help: convert the identifier to upper case: `LEN`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `acc` is never read
[INFO] [stderr]   --> src/day02/mod.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut acc: u32 = 0;
[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: function is never used: `calculate_fuel_required`
[INFO] [stderr]  --> src/day01/mod.rs:6:4
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn calculate_fuel_required(mass: i64) -> i64 {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/day01/mod.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn main() -> std::io::Result<()> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/day02/mod.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn main() -> std::io::Result<()> {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_tape_from_memory`
[INFO] [stderr]   --> src/day02/mod.rs:54:8
[INFO] [stderr]    |
[INFO] [stderr] 54 | pub fn read_tape_from_memory() -> std::io::Result<[u32; 255]> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `len` should have an upper case name
[INFO] [stderr]  --> src/day04/mod.rs:1:7
[INFO] [stderr]   |
[INFO] [stderr] 1 | const len: u32 = 8;
[INFO] [stderr]   |       ^^^ help: convert the identifier to upper case: `LEN`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `"docker" "inspect" "45408171ba1f6f15c339b3cb254fc4648fda0f1b52f87352c015b12761d6c28b"`
[INFO] running `"docker" "rm" "-f" "45408171ba1f6f15c339b3cb254fc4648fda0f1b52f87352c015b12761d6c28b"`
[INFO] [stdout] 45408171ba1f6f15c339b3cb254fc4648fda0f1b52f87352c015b12761d6c28b