[INFO] fetching crate serde_canonical 0.1.0...
[INFO] testing serde_canonical-0.1.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate serde_canonical 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate serde_canonical 0.1.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_canonical 0.1.0
[INFO] finished tweaking crates.io crate serde_canonical 0.1.0
[INFO] tweaked toml for crates.io crate serde_canonical 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 228b2639361e88e51a9fb07de4c5fb6645e07dbd31535bc5c0184b64b7a991d6
[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" "228b2639361e88e51a9fb07de4c5fb6645e07dbd31535bc5c0184b64b7a991d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "228b2639361e88e51a9fb07de4c5fb6645e07dbd31535bc5c0184b64b7a991d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "228b2639361e88e51a9fb07de4c5fb6645e07dbd31535bc5c0184b64b7a991d6", kill_on_drop: false }`
[INFO] [stdout] 228b2639361e88e51a9fb07de4c5fb6645e07dbd31535bc5c0184b64b7a991d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd96b1fba3f1d5d38bd4e3040e5cf3d5cfdc7da731a591f68db3485444aef4f9
[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" "dd96b1fba3f1d5d38bd4e3040e5cf3d5cfdc7da731a591f68db3485444aef4f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde_json v1.0.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde_canonical v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:15:51
[INFO] [stdout]    |
[INFO] [stdout] 15 |             Error::Io(ref error) => error::Error::description(error),
[INFO] [stdout]    |                                                   ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: outlives requirements can be inferred
[INFO] [stdout]    --> src/ser.rs:340:24
[INFO] [stdout]     |
[INFO] [stdout] 340 | pub enum Compound<'a, W: 'a>
[INFO] [stdout]     |                        ^^^^ help: remove this bound
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:2:9
[INFO] [stdout]     |
[INFO] [stdout] 2   | #![warn(rust_2018_idioms)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(explicit_outlives_requirements)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: outlives requirements can be inferred
[INFO] [stdout]    --> src/ser.rs:463:34
[INFO] [stdout]     |
[INFO] [stdout] 463 | pub enum OrderedKeyCompound<'a, W: 'a>
[INFO] [stdout]     |                                  ^^^^ help: remove this bound
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:29:21
[INFO] [stdout]    |
[INFO] [stdout] 29 |         _ => panic!(ARG_PANIC_MESSAGE),
[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] 29 |         _ => panic!("{}", ARG_PANIC_MESSAGE),
[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 17.77s
[INFO] running `Command { std: "docker" "inspect" "dd96b1fba3f1d5d38bd4e3040e5cf3d5cfdc7da731a591f68db3485444aef4f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd96b1fba3f1d5d38bd4e3040e5cf3d5cfdc7da731a591f68db3485444aef4f9", kill_on_drop: false }`
[INFO] [stdout] dd96b1fba3f1d5d38bd4e3040e5cf3d5cfdc7da731a591f68db3485444aef4f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa168ae5fdda3b32213cc4d27091504cd63a7cdbe5723f56b1c8c15bb7a0ea83
[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" "aa168ae5fdda3b32213cc4d27091504cd63a7cdbe5723f56b1c8c15bb7a0ea83", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_canonical v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:15:51
[INFO] [stdout]    |
[INFO] [stdout] 15 |             Error::Io(ref error) => error::Error::description(error),
[INFO] [stdout]    |                                                   ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: outlives requirements can be inferred
[INFO] [stdout]    --> src/ser.rs:340:24
[INFO] [stdout]     |
[INFO] [stdout] 340 | pub enum Compound<'a, W: 'a>
[INFO] [stdout]     |                        ^^^^ help: remove this bound
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:2:9
[INFO] [stdout]     |
[INFO] [stdout] 2   | #![warn(rust_2018_idioms)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(explicit_outlives_requirements)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: outlives requirements can be inferred
[INFO] [stdout]    --> src/ser.rs:463:34
[INFO] [stdout]     |
[INFO] [stdout] 463 | pub enum OrderedKeyCompound<'a, W: 'a>
[INFO] [stdout]     |                                  ^^^^ help: remove this bound
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:29:21
[INFO] [stdout]    |
[INFO] [stdout] 29 |         _ => panic!(ARG_PANIC_MESSAGE),
[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] 29 |         _ => panic!("{}", ARG_PANIC_MESSAGE),
[INFO] [stdout]    |                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:15:51
[INFO] [stdout]    |
[INFO] [stdout] 15 |             Error::Io(ref error) => error::Error::description(error),
[INFO] [stdout]    |                                                   ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:1:24
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: outlives requirements can be inferred
[INFO] [stdout]    --> src/ser.rs:340:24
[INFO] [stdout]     |
[INFO] [stdout] 340 | pub enum Compound<'a, W: 'a>
[INFO] [stdout]     |                        ^^^^ help: remove this bound
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:1:24
[INFO] [stdout]     |
[INFO] [stdout] 1   | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(explicit_outlives_requirements)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: outlives requirements can be inferred
[INFO] [stdout]    --> src/ser.rs:463:34
[INFO] [stdout]     |
[INFO] [stdout] 463 | pub enum OrderedKeyCompound<'a, W: 'a>
[INFO] [stdout]     |                                  ^^^^ help: remove this bound
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde_canonical` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "aa168ae5fdda3b32213cc4d27091504cd63a7cdbe5723f56b1c8c15bb7a0ea83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa168ae5fdda3b32213cc4d27091504cd63a7cdbe5723f56b1c8c15bb7a0ea83", kill_on_drop: false }`
[INFO] [stdout] aa168ae5fdda3b32213cc4d27091504cd63a7cdbe5723f56b1c8c15bb7a0ea83