[INFO] fetching crate rwasm 2020.1.1...
[INFO] checking rwasm-2020.1.1 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate rwasm 2020.1.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rwasm 2020.1.1 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-8/source/.cargo/config
[INFO] started tweaking crates.io crate rwasm 2020.1.1
[INFO] finished tweaking crates.io crate rwasm 2020.1.1
[INFO] tweaked toml for crates.io crate rwasm 2020.1.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate rwasm 2020.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f8952f516e0e4842e501fce6ba6fa4faa44bcde995caff75936f9187ec645f6
[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" "7f8952f516e0e4842e501fce6ba6fa4faa44bcde995caff75936f9187ec645f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f8952f516e0e4842e501fce6ba6fa4faa44bcde995caff75936f9187ec645f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f8952f516e0e4842e501fce6ba6fa4faa44bcde995caff75936f9187ec645f6", kill_on_drop: false }`
[INFO] [stdout] 7f8952f516e0e4842e501fce6ba6fa4faa44bcde995caff75936f9187ec645f6
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc985e6b5ace6b1f492b6e529c4b506a1baf3252deb8ac5bf8d667ff593191a4
[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" "bc985e6b5ace6b1f492b6e529c4b506a1baf3252deb8ac5bf8d667ff593191a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]     Checking addr2line v0.14.0
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]     Checking rwasm v2020.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: attribute should be applied to a function or static
[INFO] [stdout]   --> src/timer.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 |   #[no_mangle]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 50 | / extern "C" {
[INFO] [stdout] 51 | |     pub fn request_timeout(listener_id: u32, millis: u32);
[INFO] [stdout] 52 | | }
[INFO] [stdout]    | |_- not a function or static
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function or static
[INFO] [stdout]   --> src/wasm.rs:86:1
[INFO] [stdout]    |
[INFO] [stdout] 86 |   #[no_mangle]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 87 | / extern "C" {
[INFO] [stdout] 88 | |     pub fn upload_bytes(data: *const u8, length: usize) -> usize;
[INFO] [stdout] 89 | | }
[INFO] [stdout]    | |_- not a function or static
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function or static
[INFO] [stdout]   --> src/timer.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 |   #[no_mangle]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 50 | / extern "C" {
[INFO] [stdout] 51 | |     pub fn request_timeout(listener_id: u32, millis: u32);
[INFO] [stdout] 52 | | }
[INFO] [stdout]    | |_- not a function or static
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function or static
[INFO] [stdout]   --> src/wasm.rs:86:1
[INFO] [stdout]    |
[INFO] [stdout] 86 |   #[no_mangle]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 87 | / extern "C" {
[INFO] [stdout] 88 | |     pub fn upload_bytes(data: *const u8, length: usize) -> usize;
[INFO] [stdout] 89 | | }
[INFO] [stdout]    | |_- not a function or static
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `seconds_now`
[INFO] [stdout]  --> src/date.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn seconds_now() -> f64;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/date.rs:13:36
[INFO] [stdout]    |
[INFO] [stdout] 13 |         .unwrap_or_else(|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] 13 |         .unwrap_or_else(|e| panic!("{}", e));
[INFO] [stdout]    |                                    ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 13 |         .unwrap_or_else(|e| std::panic::panic_any(e));
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `seconds_now`
[INFO] [stdout]  --> src/date.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn seconds_now() -> f64;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/date.rs:13:36
[INFO] [stdout]    |
[INFO] [stdout] 13 |         .unwrap_or_else(|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] 13 |         .unwrap_or_else(|e| panic!("{}", e));
[INFO] [stdout]    |                                    ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 13 |         .unwrap_or_else(|e| std::panic::panic_any(e));
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.02s
[INFO] running `Command { std: "docker" "inspect" "bc985e6b5ace6b1f492b6e529c4b506a1baf3252deb8ac5bf8d667ff593191a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc985e6b5ace6b1f492b6e529c4b506a1baf3252deb8ac5bf8d667ff593191a4", kill_on_drop: false }`
[INFO] [stdout] bc985e6b5ace6b1f492b6e529c4b506a1baf3252deb8ac5bf8d667ff593191a4