[INFO] fetching crate myls 0.1.4...
[INFO] checking myls-0.1.4 against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] extracting crate myls 0.1.4 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate myls 0.1.4 on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate myls 0.1.4
[INFO] finished tweaking crates.io crate myls 0.1.4
[INFO] tweaked toml for crates.io crate myls 0.1.4 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate myls 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded term_size v0.3.1
[INFO] [stderr]   Downloaded num-traits v0.2.9
[INFO] [stderr]   Downloaded size v0.1.2
[INFO] [stderr]   Downloaded users v0.9.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ac209ca5bd9610297ca8c413ad6937348b155dd51226e7890aaa264f87d2c67
[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" "2ac209ca5bd9610297ca8c413ad6937348b155dd51226e7890aaa264f87d2c67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ac209ca5bd9610297ca8c413ad6937348b155dd51226e7890aaa264f87d2c67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ac209ca5bd9610297ca8c413ad6937348b155dd51226e7890aaa264f87d2c67", kill_on_drop: false }`
[INFO] [stdout] 2ac209ca5bd9610297ca8c413ad6937348b155dd51226e7890aaa264f87d2c67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 13663d8d92bc7f850b4dbc605664229cbe999228c776e7c469a370d8d8976afa
[INFO] running `Command { std: "docker" "start" "-a" "13663d8d92bc7f850b4dbc605664229cbe999228c776e7c469a370d8d8976afa", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]    Compiling num-traits v0.2.9
[INFO] [stderr]     Checking users v0.9.1
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking size v0.1.2
[INFO] [stderr]     Checking myls v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::panic::resume_unwind`
[INFO] [stdout]   --> src/meta.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::panic::resume_unwind;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::panic::resume_unwind`
[INFO] [stdout]   --> src/meta.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::panic::resume_unwind;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/meta.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / quick_error!(
[INFO] [stdout] 15 | |     #[derive(Debug)]
[INFO] [stdout] 16 | |     pub enum MetaError {
[INFO] [stdout] 17 | |         UnableReadName(path: String) {
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |     }
[INFO] [stdout] 29 | | );
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/meta.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / quick_error!(
[INFO] [stdout] 15 | |     #[derive(Debug)]
[INFO] [stdout] 16 | |     pub enum MetaError {
[INFO] [stdout] 17 | |         UnableReadName(path: String) {
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |     }
[INFO] [stdout] 29 | | );
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/meta.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / quick_error!(
[INFO] [stdout] 15 | |     #[derive(Debug)]
[INFO] [stdout] 16 | |     pub enum MetaError {
[INFO] [stdout] 17 | |         UnableReadName(path: String) {
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |     }
[INFO] [stdout] 29 | | );
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/meta.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / quick_error!(
[INFO] [stdout] 15 | |     #[derive(Debug)]
[INFO] [stdout] 16 | |     pub enum MetaError {
[INFO] [stdout] 17 | |         UnableReadName(path: String) {
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |     }
[INFO] [stdout] 29 | | );
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/meta.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / quick_error!(
[INFO] [stdout] 15 | |     #[derive(Debug)]
[INFO] [stdout] 16 | |     pub enum MetaError {
[INFO] [stdout] 17 | |         UnableReadName(path: String) {
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |     }
[INFO] [stdout] 29 | | );
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/meta.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / quick_error!(
[INFO] [stdout] 15 | |     #[derive(Debug)]
[INFO] [stdout] 16 | |     pub enum MetaError {
[INFO] [stdout] 17 | |         UnableReadName(path: String) {
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |     }
[INFO] [stdout] 29 | | );
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/core.rs:154:34
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 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] 154 |                 Err(e) => panic!("{}", e),
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 Err(e) => std::panic::panic_any(e),
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/core.rs:154:34
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 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] 154 |                 Err(e) => panic!("{}", e),
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 Err(e) => std::panic::panic_any(e),
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.17s
[INFO] running `Command { std: "docker" "inspect" "13663d8d92bc7f850b4dbc605664229cbe999228c776e7c469a370d8d8976afa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13663d8d92bc7f850b4dbc605664229cbe999228c776e7c469a370d8d8976afa", kill_on_drop: false }`
[INFO] [stdout] 13663d8d92bc7f850b4dbc605664229cbe999228c776e7c469a370d8d8976afa