[INFO] fetching crate leslie_lamport 0.3.1...
[INFO] checking leslie_lamport-0.3.1 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate leslie_lamport 0.3.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate leslie_lamport 0.3.1 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate leslie_lamport 0.3.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate leslie_lamport 0.3.1
[INFO] tweaked toml for crates.io crate leslie_lamport 0.3.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate leslie_lamport 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a291ad45533ebd92028bfc202d8e12308fc743c21767b414b92190d4f9020fc2
[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" "a291ad45533ebd92028bfc202d8e12308fc743c21767b414b92190d4f9020fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a291ad45533ebd92028bfc202d8e12308fc743c21767b414b92190d4f9020fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a291ad45533ebd92028bfc202d8e12308fc743c21767b414b92190d4f9020fc2", kill_on_drop: false }`
[INFO] [stdout] a291ad45533ebd92028bfc202d8e12308fc743c21767b414b92190d4f9020fc2
[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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40be8577f17232904a49399e37a30b0efdd16a9d15993e4ccc51fc4ddc2c410f
[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" "40be8577f17232904a49399e37a30b0efdd16a9d15993e4ccc51fc4ddc2c410f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling openssl v0.10.32
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]     Checking serde_yaml v0.8.15
[INFO] [stderr]     Checking leslie_lamport v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/lib.rs:213:82
[INFO] [stdout]     |
[INFO] [stdout] 213 |             panic!("Invalid Parameter for `d`. `d` should be a member of the set {32,48,64,128}")
[INFO] [stdout]     |                                                                                  ^            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 213 |             panic!("{}", "Invalid Parameter for `d`. `d` should be a member of the set {32,48,64,128}")
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/lib.rs:213:82
[INFO] [stdout]     |
[INFO] [stdout] 213 |             panic!("Invalid Parameter for `d`. `d` should be a member of the set {32,48,64,128}")
[INFO] [stdout]     |                                                                                  ^            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 213 |             panic!("{}", "Invalid Parameter for `d`. `d` should be a member of the set {32,48,64,128}")
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.62s
[INFO] running `Command { std: "docker" "inspect" "40be8577f17232904a49399e37a30b0efdd16a9d15993e4ccc51fc4ddc2c410f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40be8577f17232904a49399e37a30b0efdd16a9d15993e4ccc51fc4ddc2c410f", kill_on_drop: false }`
[INFO] [stdout] 40be8577f17232904a49399e37a30b0efdd16a9d15993e4ccc51fc4ddc2c410f