[INFO] cloning repository https://github.com/MaybeS/cs420
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MaybeS/cs420" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaybeS%2Fcs420", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaybeS%2Fcs420'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e8a69a32768cfcb3ef42fd837803173c759d40af
[INFO] checking MaybeS/cs420 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaybeS%2Fcs420" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MaybeS/cs420 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MaybeS/cs420
[INFO] finished tweaking git repo https://github.com/MaybeS/cs420
[INFO] tweaked toml for git repo https://github.com/MaybeS/cs420 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/MaybeS/cs420 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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] 56b2382f21d752ddfee91cf3aeb5f9c316b2b54a8f52c5ed3ed4cca10375768e
[INFO] running `Command { std: "docker" "start" "-a" "56b2382f21d752ddfee91cf3aeb5f9c316b2b54a8f52c5ed3ed4cca10375768e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56b2382f21d752ddfee91cf3aeb5f9c316b2b54a8f52c5ed3ed4cca10375768e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56b2382f21d752ddfee91cf3aeb5f9c316b2b54a8f52c5ed3ed4cca10375768e", kill_on_drop: false }`
[INFO] [stdout] 56b2382f21d752ddfee91cf3aeb5f9c316b2b54a8f52c5ed3ed4cca10375768e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab2406cf20b5ac60d7393d873b887e8180ad7349c3b46350ff7298694f75daf7
[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" "ab2406cf20b5ac60d7393d873b887e8180ad7349c3b46350ff7298694f75daf7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.3.3
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling peg-runtime v0.6.2
[INFO] [stderr]    Compiling hexf-parse v0.1.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking lang-c v0.8.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling proc-macro-hack v0.3.3
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking backtrace-sys v0.1.36
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]    Compiling peg-macros v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling hexf-impl v0.1.0
[INFO] [stderr]     Checking hexf v0.1.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking peg v0.6.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking kecc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: panic message contains braces
[INFO] [stdout]    --> src/ir/mod.rs:728:35
[INFO] [stdout]     |
[INFO] [stdout] 728 |                  must be `Constant{{Int, Float}}`"
[INFO] [stdout]     |                                   ^^          ^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:1:9
[INFO] [stdout]     |
[INFO] [stdout] 1   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(panic_fmt)]` implied by `#[deny(warnings)]`
[INFO] [stdout]     = note: this message is not used as a format string, but will be in a future Rust edition
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 727 |                 "{}", "constant value generated by `Constant::from_ast_expression` \
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kecc`
[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] error: panic message contains braces
[INFO] [stdout]    --> src/ir/mod.rs:728:35
[INFO] [stdout]     |
[INFO] [stdout] 728 |                  must be `Constant{{Int, Float}}`"
[INFO] [stdout]     |                                   ^^          ^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:1:9
[INFO] [stdout]     |
[INFO] [stdout] 1   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(panic_fmt)]` implied by `#[deny(warnings)]`
[INFO] [stdout]     = note: this message is not used as a format string, but will be in a future Rust edition
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 727 |                 "{}", "constant value generated by `Constant::from_ast_expression` \
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ab2406cf20b5ac60d7393d873b887e8180ad7349c3b46350ff7298694f75daf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab2406cf20b5ac60d7393d873b887e8180ad7349c3b46350ff7298694f75daf7", kill_on_drop: false }`
[INFO] [stdout] ab2406cf20b5ac60d7393d873b887e8180ad7349c3b46350ff7298694f75daf7