[INFO] cloning repository https://github.com/houseabsolute/precious-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/houseabsolute/precious-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhouseabsolute%2Fprecious-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhouseabsolute%2Fprecious-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9db2e3ec2bac15ef94cd8960af19f906aa734c37
[INFO] checking houseabsolute/precious-rs against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhouseabsolute%2Fprecious-rs" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/houseabsolute/precious-rs 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/houseabsolute/precious-rs
[INFO] finished tweaking git repo https://github.com/houseabsolute/precious-rs
[INFO] tweaked toml for git repo https://github.com/houseabsolute/precious-rs written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/houseabsolute/precious-rs 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 04e683e546634c8aa78f4417201ce737b1481254a3b73f0c557184ee0dc64cd2
[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" "04e683e546634c8aa78f4417201ce737b1481254a3b73f0c557184ee0dc64cd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04e683e546634c8aa78f4417201ce737b1481254a3b73f0c557184ee0dc64cd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04e683e546634c8aa78f4417201ce737b1481254a3b73f0c557184ee0dc64cd2", kill_on_drop: false }`
[INFO] [stdout] 04e683e546634c8aa78f4417201ce737b1481254a3b73f0c557184ee0dc64cd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 2829cb63ba2d38bf5ed46f5a9d876fe3035603d7ad502c413d2d236d1a82a01d
[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" "2829cb63ba2d38bf5ed46f5a9d876fe3035603d7ad502c413d2d236d1a82a01d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking path-clean v0.1.0
[INFO] [stderr]     Checking thread_local v1.1.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking fern v0.6.0
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking ignore v0.4.17
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking spectral v0.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling serial_test_derive v0.4.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking serial_test v0.4.0
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]     Checking precious v0.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/testhelper.rs:57:42
[INFO] [stdout]    |
[INFO] [stdout] 57 |                         Err(e) => panic!(e),
[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] 57 |                         Err(e) => panic!("{}", e),
[INFO] [stdout]    |                                          ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 57 |                         Err(e) => std::panic::panic_any(e),
[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 1m 08s
[INFO] running `Command { std: "docker" "inspect" "2829cb63ba2d38bf5ed46f5a9d876fe3035603d7ad502c413d2d236d1a82a01d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2829cb63ba2d38bf5ed46f5a9d876fe3035603d7ad502c413d2d236d1a82a01d", kill_on_drop: false }`
[INFO] [stdout] 2829cb63ba2d38bf5ed46f5a9d876fe3035603d7ad502c413d2d236d1a82a01d