[INFO] cloning repository https://github.com/CasperN/mpcs_cache_emulator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CasperN/mpcs_cache_emulator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCasperN%2Fmpcs_cache_emulator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCasperN%2Fmpcs_cache_emulator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eed1c82f4dd80db0e7cd186e6e52c341784057c9
[INFO] checking CasperN/mpcs_cache_emulator against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCasperN%2Fmpcs_cache_emulator" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CasperN/mpcs_cache_emulator on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CasperN/mpcs_cache_emulator
[INFO] finished tweaking git repo https://github.com/CasperN/mpcs_cache_emulator
[INFO] tweaked toml for git repo https://github.com/CasperN/mpcs_cache_emulator written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/CasperN/mpcs_cache_emulator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 408bdd3db90b4f12b3ed8016c72a0c5f02c653b82f05dcff86ace06e43d1a30b
[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" "408bdd3db90b4f12b3ed8016c72a0c5f02c653b82f05dcff86ace06e43d1a30b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "408bdd3db90b4f12b3ed8016c72a0c5f02c653b82f05dcff86ace06e43d1a30b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408bdd3db90b4f12b3ed8016c72a0c5f02c653b82f05dcff86ace06e43d1a30b", kill_on_drop: false }`
[INFO] [stdout] 408bdd3db90b4f12b3ed8016c72a0c5f02c653b82f05dcff86ace06e43d1a30b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1b833d353d9688f90b100b167fc94ae9506780853dc89d176de4a5aba5d4aa3
[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" "c1b833d353d9688f90b100b167fc94ae9506780853dc89d176de4a5aba5d4aa3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.36
[INFO] [stderr]     Checking num-traits v0.1.42
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.4.2
[INFO] [stderr]     Checking ansi_term v0.10.2
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking termcolor v0.3.3
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking rand v0.3.20
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking clap v2.29.2
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking regex v0.2.5
[INFO] [stderr]     Checking env_logger v0.5.3
[INFO] [stderr]     Checking pretty_env_logger v0.2.0
[INFO] [stderr]     Checking cache_emulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/algorithms.rs:91:72
[INFO] [stdout]    |
[INFO] [stdout] 91 |       assert!((cpu.load(i) - (i - 16) as f64 * 4.0).abs() < 0.0000001, cpu.load(i));
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 91 |       assert!((cpu.load(i) - (i - 16) as f64 * 4.0).abs() < 0.0000001, "{}", cpu.load(i));
[INFO] [stdout]    |                                                                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/algorithms.rs:104:49
[INFO] [stdout]     |
[INFO] [stdout] 104 |       assert!((cpu.load(i) - 48.0) < 0.0000001, cpu.load(i));
[INFO] [stdout]     |                                                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 104 |       assert!((cpu.load(i) - 48.0) < 0.0000001, "{}", cpu.load(i));
[INFO] [stdout]     |                                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/algorithms.rs:117:49
[INFO] [stdout]     |
[INFO] [stdout] 117 |       assert!((cpu.load(i) - 48.0) < 0.0000001, cpu.load(i));
[INFO] [stdout]     |                                                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 117 |       assert!((cpu.load(i) - 48.0) < 0.0000001, "{}", cpu.load(i));
[INFO] [stdout]     |                                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.13s
[INFO] running `Command { std: "docker" "inspect" "c1b833d353d9688f90b100b167fc94ae9506780853dc89d176de4a5aba5d4aa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1b833d353d9688f90b100b167fc94ae9506780853dc89d176de4a5aba5d4aa3", kill_on_drop: false }`
[INFO] [stdout] c1b833d353d9688f90b100b167fc94ae9506780853dc89d176de4a5aba5d4aa3