[INFO] cloning repository https://github.com/sanderbockstaele/math
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sanderbockstaele/math" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsanderbockstaele%2Fmath", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsanderbockstaele%2Fmath'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95278dd8d7fc85aa53e2f120ee5b5bb73c4e03e5
[INFO] checking sanderbockstaele/math against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsanderbockstaele%2Fmath" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sanderbockstaele/math on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sanderbockstaele/math
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/sanderbockstaele/math
[INFO] tweaked toml for git repo https://github.com/sanderbockstaele/math written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ca4d4a4031afa2a5e2c0288f6da0302295ce8b00883def5ab31454f9f0a8ceeb
[INFO] running `Command { std: "docker" "start" "-a" "ca4d4a4031afa2a5e2c0288f6da0302295ce8b00883def5ab31454f9f0a8ceeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca4d4a4031afa2a5e2c0288f6da0302295ce8b00883def5ab31454f9f0a8ceeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca4d4a4031afa2a5e2c0288f6da0302295ce8b00883def5ab31454f9f0a8ceeb", kill_on_drop: false }`
[INFO] [stdout] ca4d4a4031afa2a5e2c0288f6da0302295ce8b00883def5ab31454f9f0a8ceeb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a03b429266b345ebfa146111c500b00a9e2ba93c8decff7e462f3c4bdc3c96b7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a03b429266b345ebfa146111c500b00a9e2ba93c8decff7e462f3c4bdc3c96b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking ttf-parser v0.6.2
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.4
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking atomic_refcell v0.1.7
[INFO] [stderr]     Checking emath v0.9.0
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]     Checking takeable-option v0.5.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking webbrowser v0.5.5
[INFO] [stderr]     Checking emath v0.11.0
[INFO] [stderr]     Checking prev-iter v0.1.2
[INFO] [stderr]     Checking array2d v0.2.1
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling ahash v0.7.2
[INFO] [stderr]     Checking libloading v0.7.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking input v0.1.0 (/opt/rustwide/workdir/input)
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> input/src/token.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mut result: bool = false;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LETTER`
[INFO] [stdout]  --> input/src/token.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / const LETTER: [char; 52] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p'
[INFO] [stdout] 5 | | ,'q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M',
[INFO] [stdout] 6 | | 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z'];
[INFO] [stdout]   | |_____________________________________________________^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `tokens`
[INFO] [stdout]   --> input/src/token.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     tokens: Vec<Token>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> input/src/token.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     name: &'static str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking algebra v0.1.0 (/opt/rustwide/workdir/algebra)
[INFO] [stdout] error: format argument must be a string literal
[INFO] [stdout]   --> algebra/src/algebra.rs:69:14
[INFO] [stdout]    |
[INFO] [stdout] 69 |     println!(tokens);
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a string literal to format with
[INFO] [stdout]    |
[INFO] [stdout] 69 |     println!("{}", tokens);
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `input::token::*`
[INFO] [stdout]  --> algebra/src/algebra.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use input::token::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> input/src/token.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mut result: bool = false;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> input/src/token.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 227 |         let mut characters: String = create_character_vec("sin()");
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LETTER`
[INFO] [stdout]  --> input/src/token.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / const LETTER: [char; 52] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p'
[INFO] [stdout] 5 | | ,'q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M',
[INFO] [stdout] 6 | | 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z'];
[INFO] [stdout]   | |_____________________________________________________^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `tokens`
[INFO] [stdout]   --> input/src/token.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     tokens: Vec<Token>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> input/src/token.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     name: &'static str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `algebra`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: format argument must be a string literal
[INFO] [stdout]   --> algebra/src/algebra.rs:69:14
[INFO] [stdout]    |
[INFO] [stdout] 69 |     println!(tokens);
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a string literal to format with
[INFO] [stdout]    |
[INFO] [stdout] 69 |     println!("{}", tokens);
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `input::token::*`
[INFO] [stdout]  --> algebra/src/algebra.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use input::token::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a03b429266b345ebfa146111c500b00a9e2ba93c8decff7e462f3c4bdc3c96b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a03b429266b345ebfa146111c500b00a9e2ba93c8decff7e462f3c4bdc3c96b7", kill_on_drop: false }`
[INFO] [stdout] a03b429266b345ebfa146111c500b00a9e2ba93c8decff7e462f3c4bdc3c96b7