[INFO] fetching crate markov 1.1.0...
[INFO] checking markov-1.1.0 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate markov 1.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate markov 1.1.0 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate markov 1.1.0
[INFO] finished tweaking crates.io crate markov 1.1.0
[INFO] tweaked toml for crates.io crate markov 1.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate markov 1.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c04a7e3977c70835f868441e47ad70fa51c162bf7b1441081eac578695b8bb64
[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" "c04a7e3977c70835f868441e47ad70fa51c162bf7b1441081eac578695b8bb64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c04a7e3977c70835f868441e47ad70fa51c162bf7b1441081eac578695b8bb64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c04a7e3977c70835f868441e47ad70fa51c162bf7b1441081eac578695b8bb64", kill_on_drop: false }`
[INFO] [stdout] c04a7e3977c70835f868441e47ad70fa51c162bf7b1441081eac578695b8bb64
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81a16efef3c3b37a284688401aa85ed949415a18e9c5350f69906c3890051e35
[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" "81a16efef3c3b37a284688401aa85ed949415a18e9c5350f69906c3890051e35", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]    Compiling hashbrown v0.8.1
[INFO] [stderr]    Compiling indexmap v1.5.0
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking markov v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/bin/markgen.rs:48:26
[INFO] [stdout]    |
[INFO] [stdout] 48 |         Err(e) => panic!(e.to_string()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 48 |         Err(e) => panic!("{}", e.to_string()),
[INFO] [stdout]    |                          ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 48 |         Err(e) => std::panic::panic_any(e.to_string()),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/bin/markgen.rs:48:26
[INFO] [stdout]    |
[INFO] [stdout] 48 |         Err(e) => panic!(e.to_string()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 48 |         Err(e) => panic!("{}", e.to_string()),
[INFO] [stdout]    |                          ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 48 |         Err(e) => std::panic::panic_any(e.to_string()),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.96s
[INFO] running `Command { std: "docker" "inspect" "81a16efef3c3b37a284688401aa85ed949415a18e9c5350f69906c3890051e35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81a16efef3c3b37a284688401aa85ed949415a18e9c5350f69906c3890051e35", kill_on_drop: false }`
[INFO] [stdout] 81a16efef3c3b37a284688401aa85ed949415a18e9c5350f69906c3890051e35